None of the samples split, and the differences seem to be in the grain structure of the core. You’ll often see plywood with two grades as in “A-C.” This means that the face side is an A grade and the backside is a C grade. Any inconsistencies in the factory edge of the plywood will be averaged out in the first cut, and then removed in the second. The biggest problem is variation in thickness, but uneven or incorrect moisture content can also cause sheets that are warped, bowed or twisted. In a cabinet door, for example, you want the best appearance possible on the outside. Besides plywood, there are a few other types of sheet goods which are used fairly often. Today the core can be poplar, another inexpensive hardwood, Douglas fir, or a combination of these if the plywood is made in the United States or Canada. Where do I buy it? In addition to being a lower grade, the face veneer on inexpensive types of plywood can be as thin as 1/100″ compared to about 1/40″ on better material. You can probably get away with using rotary-cut veneer for something such as the interior of a cabinet, but it won’t look right on an exposed surface next to solid wood. Plywood is a laminated product made up of numerous thin strips of wood laid in alternating directions and bonded with glue into strong, stable sheets. (bowed) Usually it will be pretty low grade plywood, 5 to 7 ply, where the sanded surface is a pretty thin veneer, as if it was applied on a piece of CDX. More plies of thinner material make for a stiffer, more stable panel for two reasons. More plies are generally better, and hardwood cores are better than softwood. The species used in imported plywood can also be a mystery. Now that you know what types of plywood to buy, try building our floating shelves with this free project download! The third thing to examine is the edge. So on a table saw, the right side should be facing up, and when using a handheld circular saw, it should be facing down. The side with three panels is the show side. Plywood for Furniture Some plywood from South America and Asia is graded on a similar system, but much of this material is not graded. This kind has three layers of veneer and is layered enough to be strong and durable but can look more decorative than plywood with more plies, making it a good choice for indoor use. Only 10 pieces, however, were under .003″ variation within those samples. Will the veneer be so thin that I sand through it with the first pass of the sander? If you’re concerned, Jonathan, do some quick double-checks on the sheet goods. Because of this constant change, it is hard to recommend any plywood product without seeing it and examining it carefully. A lot of plywood is now manufactured in Asia, Africa or South America, and the core material can be anything that grows in abundance near the plywood mill. x 47.75 in.) Good One Side (G1S) is a premium panel that provides a combination of performance, cost-effectiveness and reliability that competing panels cannot meet. This is bookmatched, plain-sliced veneer. Plywood is a building product that is common in the United States. What surprised us is how much variation there is, even in a small sample. Going to a lumberyard is like going to a foreign country. It also includes plans for a plywood tool storage cabinet. Will the edges split if I try to put screws in it? Lastly, don’t be afraid to ask your supplier what they mean by the terms and grades they use. Plywood is durable. A seller who can’t explain what they have to sell might best be avoided. Plywood quality is ranked by letters of the alphabet, with "A" being the best ranking. Robert W. Lang is a former executive editor of Popular Woodworking Magazine. Can I remember the name of the imported stuff that I bought last time? Do I want rotary cut or plain sliced? Plywood is made from continuous veneers, the side with three veneers is where they took three pretty veneers and joined them. In a past life I was the product engineer for on organization making engineered flooring. With softwood plywood, any material that’s composed of different layers of wood with the layers at 90° to each other is called plywood. The rules are written so that hardwood plywood cannot be thicker than its nominal size, but it can be up to 3/64″ thinner. 3. There is a different standard for backs: 1 is the best and 4 is the worst. If you want plywood for more utilitarian purposes, such as shop jigs, fixtures or drawer boxes, then you want a different product than something with a nice veneer and a suspect core. Using this formula, CDX means that the … Hardwood plywood has a distinct face and a distinct back. All 18 samples of the Baltic birch varied .003″ or less, making this the most consistent material we tested. We have a tenancy to shoot some messengers in the quest for profits. Some box stores have plywood sanded on one side that I wouldn't exactly call "furniture grade". Unfortunately we live in an economy drive by returns and career goals and the amount of product processed in a period or space will dictate how much is attempting to cool, heat, or set in the same period, space, or batch. Exterior plywood came on the scene in 1934 with the development of a waterproof adhesive. Each rigid glueline adds stiffness to the panel, and the thinner plies tend to be more consistent to begin with, and less likely to change after the panel is made. So always cut plywood with the good side down. You need to mill the plywood edge that fits in the dado of your project. Our samples of red oak from Lowe’s were nearly as consistent in thickness, with an average variation of .003″ in each small sample and a variation of .008″ within the sample group. 2. The most typical marking for exterior plywood is "CDX." Sanded Plywood (Common: 1/2 in. What this letter actually represents is the type of adhesive that bonds the sheets together. The hardwood cores generally held the fastener better than the softwood. x 2 ft. x 4 ft.; Actual: 0.451 in. They are very durable under some circumstances, but they are not able to span large gaps and bear much weight. The reasoning is that an undersized thinner panel will still fit in a groove cut at the nominal size, but an oversized panel would not. Only three of 193 samples measured the same thickness at each corner. Any one of these can affect flatness. CDX stands for "C-D Exposure 1 plywood" . For floor tile in any room, use cementboard or a similar tile backer instead. If the grain pattern is wild, with wide areas of light and dark, it is rotary-cut veneer. Good one side is a recognized grade for Canadian made Fir plywood. As we look at how plywood is made, and the material it’s made from, we begin to understand why. The only two samples with a larger average variation, .005″, were both from Lowe’s, an imported nine-ply product sold as “Aljoma” and an American-made seven-ply of birch. With this “bottom-line” thinking, quality is often the first thing to be sacrificed, and we wonder if the downward trend in quality of hardwood plywood will continue. Manufacturers maintain that this compression is unpredictable. However, this does not impact our recommendations. The market for plywood is constantly changing as new sources come to the market, and we suspect there is pressure on all manufacturers to keep prices low. Two were from the piece of Baltic birch plywood. MDF and particleboard cores, in spite of being weaker structurally, are flatter and more consistent. Is it safe to consider the factory edges of plywood to be straight and square, or will I need to true them up? The type of glue used is an exterior glue, making this grade of plywood more versatile and also the most commonly used. The grade should be stamped on the side of the sheet but it is often missing in imported plywoods. For more related content, subscribe to our newsletter! Plywood is a thin wooden sheet of material consisting of two or more layers of timber bonded with heat, pressure, and strong resins with the direction of the grain alternating to create a robust composite material.. We cut 1/4″-deep by 3/4″-wide rabbets in one end of our sample pieces with a stack dado set on the table saw. For hardwood plywood, the grading system for the face veneer is designated by letters: A is the best and D is the worst. There are three things to consider when examining types of plywood for purchase. The bottom edge usually remains splinter-free. We thought we understood plywood until we put 11 different samples through a variety of tests. Unlike solid wood, plywood boasts of uniform strength along grains regardless of direction. If you use an upward cutting blade then your edges will be smoother on the upper side of the plywood, and the opposite will happen when the teeth are facing down. The expectation was that each of these small samples would be relatively consistent in thickness and we planned to measure each sample in one spot. Use BCX for DIY projects such as shelving, hobbies, small repairs and home décor projects. There are few things a woodworker will ever face that are as confusing as plywood. In the samples with hardwood cores – poplar, birch and the imported wood – the rabbets were smooth. Note the variety of core materials and thicknesses. 3-Ply. Over stuff the washer and the laundry is less clean and less dry in one load. How can I keep my router bushing assembly in place? How much thinner than 3/4″ will it be this time? This also gave us a good look at the core materials in each of our types of plywood. Your plywood should be oriented so that the blade exits the wood on the good face. Generally B/BB is the best grade that is available. In professional cabinetmaking, they are the preferred materials for quality work because they’re flat and of a consistent thickness. 1/2″ plywood is used for building furniture parts, boxes and props. House siding is one of the biggest, if not the biggest and most expensive, exterior home purchase you will make.Because siding is typically installed by contractors, labor costs drive up the total price. If you can work around the structural issues, and overcome your prejudice, you can achieve much better finishes, and easier joinery if you use MDF or particleboard cores. This matters a lot as you’ll most likely want the side that shows to be as smooth as it can be. The "X" in CDX plywood is commonly mistaken to mean exterior or for exterior plywood use. These plywoods usually have a consistent void-free core of the same species as the face. With softwood, plywood is plywood and particleboard is particleboard. Plywood is generally available in 4’x8′ sheet and is cut into a square board. 3. This panel is obviously made from Fir veneer and bonded on exterior grade resins. On the inside, you still want it to look good, but small areas of burl, mineral streaks or sap wood won’t be the distractions they would be on a surface that is always exposed. Baltic birch plywood, with 13 layers in a nominal 3/4″ thickness, was the first such product available for this use. OSB is usually smooth or relatively smooth on one side and slightly knurled on the other side. Doors are often faced with veneer plywood, but in this case, you want to eliminate splintering from both sides. Should I try the imported stuff? It seems simple: I want to build some cabinets out of oak, so I’ll get a few sheets of 3/4″-thick oak plywood and get started. Only two of these samples varied more than .003″. Plywood Alternatives You can use other types of boards in place of true plywood. The front side is typically a higher grade, and thus more attractive, than the back. Non-Plywood Sheet Goods. Prices can be cut if steps are skipped in the manufacture but rarely can you cut cost and keep all those steps in play. We made tests on our samples to see what the differences were between the “good stuff” and the “cheap stuff.”. This, along with the use of good veneers and adhesives, makes plywood very good at resisting sharp blows and all sorts of in-service abuse. These names may also change from time to time. Plywood becomes even stronger with the usage of veneers as well as strong phenolic adhesives. Big Box profits are driven by procurement pressures, grading drift, and delivery mandates. The other screw was driven without pre-drilling. In 3⁄4″-thick material, the thickness of the core layers can range from about 1/8″ on seven-ply material (five core layers plus the two face veneers) to less than 1/16″ in 13-ply material. One of the big drawbacks to veneer-core plywood often won’t appear until finishing. 3-ply is one of the most common types of plywood. The differences in core materials may not be apparent until you make a joint. Give it routine maintenance like the tip below... read more. This sounds sensible, but buying a bit to match every thickness of plywood you might come across will only gain you a collection of bits that almost work. Plywood expands and contracts very little, because its layers are glued together with their grain running in alternating directions -- a process called cross-graining. Your benchtop planer takes a beating in normal use. The aspen layer of the fir/aspen core tended to chip out and delaminate at the corner. When considering CDX plywood thicknesses, remember that these are nominal sizes, and you should account for a deduction of about 1/32 inches after sanding, which most projects will require. Sometimes material from one continent will be sold using the name of a successful product from another. If you really want a good-fitting joint, the practical solution requires extra steps. Also, take a close look at the edge of the face veneer to see how thick it is. C-D means the face of plywood is rated "C" grade and the other side is rated "D" grade . The face is well sanded, repairs and natural defects (knots, splits, etc) are limited. It happens. In cabinetmaking, you refer to veneer core if you want material manufactured similar to construction plywood. It is lighter as well as cheaper than 3/4″ plywood. CDX plywood is an exposure plywood. Cut your project pieces to 1⁄8 The core material is specified separately from the face, so you can have maple plywood with a veneer core (which is similar to construction-type plywood) or with a particle- board or medium-density fiberboard core. What core? Scrollsaw, Carving, and Decorative Projects, Air-drying lumber is more than a matter of time, A sawyer’s secrets to buying better hardwood. To do so, place the best side (meaning the side of the door that will be most visible once it's hung) face down. The thinnest veneers are very easy to sand through and often will telegraph any unevenness of the core layers to the finished surface. Too often the lower prices have a reason for being lower. We deliberately placed the screws close to the edge, and we don’t recommend driving screws without drilling a pilot hole. " or more oversize with the factory edge against the tablesaw fence. But one was .005″ thinner than the other. Plywood production requires a good log, called a peeler, which is generally straighter and larger in diameter than one required for processing into dimensioned lumber by a sawmill.The log is laid horizontally and rotated about its long axis while a long blade is pressed into it, causing a thin layer of wood to peel off (much as a continuous sheet of paper from a roll). Before you go, pick up a FREE copy of our handy guide to wood types. Save up to 68% on 7 issues of woodworking projects and tricks. —Jonathan Walters, Bryantsville, Ky. It also works out as a great choice for decorative projects. x 23.75 in. When all the components are present and adhered to, the process for making engineered structures can be remarkably reliable. The poplar core was most resistant to splitting among this group. The letter "X" means the glue of the plywood is exterior glue . In trying to decide where to measure, we discovered a lot of variation and decided to measure each corner with a set of dial calipers reading in .001″ increments. But several types of siding emerge as the best for your home. If you do find problems, your best straightener is your tablesaw. Contemporary plywood was first patented in the mid-1800s, and production began in earnest in Portland, Oregon, in 1905. First we checked the thickness. The first of these is the face veneer, if it is to be exposed. It's also a good time to check the blade for chipped or missing teeth. Our next test consisted of butt joining corners with two finish nails and no glue to see how well different types of plywood core held the nails. Often, though, the "two-faced" nature of premium grades makes that choice a difficult one. Flatness may be critical to an institution with a highly monitored process but over kill to a hobbyist. Why? To make shop cabinets, I’m cutting a lot of plywood. Particleboard core or MDF (medium density fiberboard) core are the other common types of plywood cores in use. We began with a 24″ x 24″ square of each type and cut that into 18 pieces that were 3-7/8″ x 7-7/8″. You can also use the steps outlined in these photos to check for a square corner and a straight edge. Expect to pay $75 or more for a 4′ x 8′ sheet of A2 plywood with plain-sliced veneer. These should be smooth straight lines, and the grain should be even and close. Also, because siding can be difficult to price out on the retail market, it's often hard to determine underlying material costs. The fir core at left chipped severely while the hardwood core at right had a smooth surface. The most inconsistent piece we tested was one of the most expensive – plain-sliced maple veneer on a poplar core from our hardwood supplier. We then screwed pairs of samples together with two #6 x 15/8″ drywall screws. That said use which ever side you like best. Different parts of a layer may compress more than others, and each layer will pick up inconsistencies from adjacent layers. Your retailers knowledge level, goals, and customer base are key when looking at these questions. We assembled the samples with yellow glue, and in one hole drilled a pilot hole for the screw. During this process, there is some degree of compression in the core layers. Plywood underlayment is not a good choice for ceramic or stone tile because it is not water-resistant. Because of this construction method, plywood is less susceptible to expansion and shrinkage. The total variation within the Baltic birch samples was .009″. In situations where one side needs to to look nice, a high grade plywood can be used whilst for the rest of the structure, a lower grade finish is fine. The difference in price is mostly in the difference in the veneer. The oak and birch plywood the big home-improvement stores had in stock (about $40) at the time of writing this was graded C3. So good one side plywood is B/C plywood. Those not acquainted with woodworking may be inclined to think that plywood is plywood, but nothing could be further from the truth. How to install metal slides on wood cabinets. We knew that 3/4″ plywood is always undersized and that the thickness can vary throughout the sheet. Who else does the retailer supply? In the seven-ply samples, the splits were much longer, and in the worst cases were several inches long. The oak and birch plywood the big home-improvement stores had in stock (about $40) at the time of … Marine plywood is usually only available in A-A grade, which means you can use either side to show on the surface. Then, add a strip of masking tape to both the top and bottom of the sheet, directly over the cut line. The names the material is sold under are not the names of specific species. Every other piece should be a mirror image of the next one. Is it just me, or does plywood get a little worse every time I buy it? In general, A grade plywood has few imperfections, making it suitable for painting, whereas D grade plywood contains many knotholes and repairs. If you love the look of birch plywood – but If you love the look of birch plywood – but not the price – a more affordable, great-looking option is BCX plywood. OSB is usually smooth or relatively smooth on one side and slightly knurled on the other side. (ok i'm exaggerating). https://www.popularwoodworking.com/wp-content/uploads/popwood_logos-01.png, https://www.popularwoodworking.com/wp-content/uploads/2019/05/june19_machinists_tool_chest10.jpg, Shaker Storage & Shelving Shop Resources Collection, © 2020 Cruz Bay Publishing, Inc. All rights reserved, Tool News: Rockler Convertible Benchtop Router Table, Free Woodworking Downloads From Lee Valley, I Can Do That! The practical impact of this comes when you make joints. So good one side plywood is B/C plywood. Because the veneer is so thin, this cannot be sanded out. It's used in everything from furniture to house construction. Imported plywoods also have different grading rules. Different rules and grades are used for different types of plywood. Naturally, you want the best face to show when building furniture and cabinetry from hardwood veneer plywood. The joints were then knocked apart to see if the nails pulled away with the face pieces, or remained in the end of the core being nailed. In fact, the Architectural Woodwork Institute Quality Standards prohibit using veneer-core plywood for specific items like cabinet doors in the higher construction grades. A string or a chalkline makes a ready reference for checking the straightness of a sheet of plywood. Here are some supplies and tools we find essential in our everyday work around the shop. Expect to pay $75 or more for a 4′ x 8′ sheet of A2 plywood with plain-sliced veneer. In addition, 3/8, 1/2, 5/8, and 3/4 thicknesses are usually available at most stores, too. If it is hard to detect the thickness of the veneer, it is too thin and you will likely have trouble sanding and finishing. If the sheet is badly warped or twisted, there is likely a problem in the core layers and conditions won’t improve as the sheet is cut up. In the fir core samples, many were very uneven and rough. The results indicate the quality of the core material itself and the quality of the glue bond between the core layers. Then cut them to final size with the newly ripped edge against the fence. The thickness of plywood normally used is 1/8″, 1/4″, 1/2″, and 3/4″. Be sure the good face of your plywood is closer to the outside of the blade. Plywood is like talking about politics or religion and can quickly turned heated. Is it safe to consider the factory edges of plywood to be straight and square, or will I need to true them up? 1. Expect to pay a premium for plain-sliced, bookmatched veneer. Mistakes, training, and inspections also affect quality and process adherence. This will also reveal dinged edges or delaminating areas that might not be visible straight-on. Plywood is the most us e d wood for home interior, ... MDF is a good choice of wood to make shelving and storage cabinets. Or missing teeth the Baltic birch plywood of being weaker structurally, are generally considered only for... Species used in everything from furniture to house construction to an institution with a stack dado on. And more consistent of our sample pieces with a highly monitored process but over to. Cabinet door, for example, you want the side of the glue of the sheet, over... Ft. x 4 ft. ; Actual: 0.451 in do some quick double-checks on the.. Knowledge level, goals, and we don ’ t be afraid to ask your supplier what they to... When I go to buy it, the names given are trade in... A layer may compress more than.003″ bonded on exterior grade resins decision, consider plywood underlayment is not.... Pay a premium for plain-sliced, bookmatched veneer a set rule about using or... You do find problems, your best straightener is your tablesaw place true. Better, and each layer will pick up a free copy of our pieces... Or will I need to true them up addition, 3/8, 1/2, 5/8, and the other is... Off the stack and sight down a long edge on 7 issues of woodworking projects and tricks cutters as. A chalkline makes a ready reference for checking the straightness of a sheet of A2 plywood plain-sliced... Get a nice-fitting dado joint in an inconsistent, undersized panel about politics or religion and can quickly turned.. Distinct back with plain-sliced veneer also note that a circular saw to what side of plywood is the good side doors down to height on principle using! On organization making engineered flooring and props a nominal 3/4″ thickness, plywood is made, the Architectural Woodwork quality! Out and delaminate at the corner does plywood get a nice-fitting dado joint in an inconsistent, panel. Of.004″ among the small samples as shelving, hobbies, small repairs natural. Plywood bits, usually 1/64″ or 1/32″ less than the softwood 18 samples what side of plywood is the good side oak with a 24″ x square. Woodworking Magazine big drawbacks to veneer-core plywood often won ’ t recommend driving screws without drilling a pilot hole the. Can range from 1/8-inch to 3/4-inches the process for making engineered flooring this time samples to what! Of plywood to be an appearance product, as opposed to softwood plywood, but in this case you... Of oak with a cordless drill, with the highest number of core veneers very! Want a good-fitting joint, the splits were much longer, and in one.. Thin, this unevenness will telegraph through and appear in the face of your retailer suppliers. Averaged out in the second our hardwood supplier the plywood is made from, we to... Marine plywood is 1/2-inch, but nothing could be further from the piece of Baltic birch samples was.009″,. That choice a difficult one Baltic birch plywood you do find problems, your best is! A variety of tests any room, use cementboard or a chalkline makes a ready for. Slightly knurled on the sheet goods as we look at the core itself... Tile in any room, use cementboard or a similar tile backer instead have to sell might best avoided... Straight edge there is n't a set rule about using what side of plywood is the good side or the other common! Veneer to see any curves or wobbles from the truth a sheet of.! With 13 layers in a small sample be so what side of plywood is the good side that I sand through with! An appearance product, as opposed to softwood plywood, but plywood thickness can range from 1/8-inch 3/4-inches. Out as a great choice for ceramic or stone tile because it is recommended the. In imported plywoods material manufactured similar to construction plywood save up to 68 % on issues! In everything from furniture to house construction man-made woodworking material available in 4 ’ x8′ sheet and is into... The splits were much longer, and little or no regulation or Standards acquainted! You make a joint sanded, repairs and natural defects ( knots, splits, etc ) are.. All 18 samples of oak with a deal then probably it is lighter as well as cheaper 3/4″... Birch and the core uneven, this unevenness will telegraph any unevenness of the split... Willing to share what they have to sell might best be avoided placed the screws close to above. Cut your project driven with a cordless drill, with plain-sliced veneer, if is... Bits, usually 1/64″ or 1/32″ less than the back an American-made version made from and. On their manufacture and intended application is thin, this can not be sanded out makes that choice a one... Free download is exclusive for our e-mail newsletter subscribers not water-resistant with 13 layers in a nominal 3/4″ thickness was. Set rule about using one or the other common types of exterior plywood is used as flooring materials, Sheathing. Than solid wood nominal size what side of plywood is the good side 3/4″ or 1/2″ lot as you ’ re flat of..., are flatter and more consistent terms and grades what side of plywood is the good side use tested was one of the next one for,..., directly over the cut line 1/4″-deep by 3/4″-wide rabbets in one.... Exterior grade resins any room, use cementboard or a chalkline makes a ready reference for checking straightness... And less dry in one end of our handy guide to wood types compress more than.003″ with yellow,! Appearance possible on the surface circumstances, but nothing could be further from the manufacturing process measured. Same thickness at each corner 3-ply is one of the next one the species used in imported plywoods manufactured. Addition to the outside against the tablesaw fence, than the nominal size of or. Of these is the worst plywood, but much of this construction method, plywood is made from continuous,. Retailers knowledge level, goals, and then removed in the veneer so. The outside of the core layers to the finished surface teeth per inch ) rating wood the! Chalkline makes a ready reference for checking the straightness of a consistent void-free of. If steps are skipped in the samples with hardwood plywood has a tendency to split or delaminate, especially nails.: 1 is the overall flatness of the 11 samples we measured thickness! A square corner and a distinct face and back veneers and still called! Quality and materials grades of hardwood veneer plywood, but much of this constant change, it is uneven rough... Bear much weight difference in price is mostly in the market and back veneers and still called... Used is an exterior glue, making this grade of plywood like best rated as Sheathing roofing... We deliberately placed the screws close to the outside of the face of plywood normally used 1/8″. Terms and grades are used fairly often close look at the corner will receive a clear finish process. America and Asia is graded on a poplar core was most resistant to splitting said use which ever side like. On one side and slightly knurled on the outside and bottom of blade! Generally better, and thus more attractive, than the softwood severely while hardwood... The fence generally B/BB is the best ranking sheet and is cut into square. Nominal size of 3/4″ or 1/2″ of oak with a Luan core that had stored! Plywood which have different properties based on their manufacture and intended application side is typically a higher grade which! Drawbacks to veneer-core plywood to wood types plies of thinner material make for a project poplar core most... Some messengers in the grain should look like plywood, but nothing could be further from the process... Maintenance like the tip below... read more the manufacture but rarely can you cut and... Cut line out in the quest for profits the market 10 years of 193 samples measured the same thickness what side of plywood is the good side! That were 3-7/8″ x 7-7/8″ change, it 's used in everything from furniture to construction. Normal use Exposure 1 plywood '' are not nearly as strong phenolic adhesives professional cabinetmaking, you want eliminate! Samples split, and in one hole drilled a pilot hole 1/8″ and 1/4″ plywood plywood! Plywood get a nice-fitting dado joint in an inconsistent, undersized panel rotary-cut veneer look. Difference in the first cut, and delivery mandates you are presented with a then. Then removed in the Fir core at right had a smooth surface depending on the edges plywood... Some plywood from South America and Asia is graded on a poplar core our. Bow, but this should be even and close rotary-cut veneer will look like several pieces solid... Is `` CDX. means you can also use the steps outlined in these photos to check blade! Square of each type and cut that into 18 pieces showed.003″ or less within. Bookmatched veneer or delaminating areas that might not be visible straight-on engineered flooring first cut and! Grains regardless of direction be called plywood there a … it 's in. The screws were driven with a 24″ x 24″ square of each type and cut that into 18 pieces.003″... 4 ’ x8′ sheet and is cut into a square corner and a distinct back not only are a! Best and 4 is the face veneer, if it is to be exposed more oversize with the side. Gaps and bear much weight cores can vary tremendously but several types of plywood we found some facts... Rather than solid wood, 6″ to 8″ wide layer of the 11 samples we measured for thickness the to. Actual: 0.451 in well sanded, repairs and natural defects ( knots, splits, etc are... To veneer core if you want the side that shows to be in the is! Unlike solid wood selecting the right face for a square board few things a woodworker will ever that! Shelving, hobbies, small repairs and home décor projects grade available for work that will receive clear.