If you have a circular saw with the shoe set to maximum depth you will get more splintering than if you set it so that it will just barely cut through the wood because the angle that the teeth come out of the wood is lower to the wood when you are working on the outside of the curve of the blade.
Avoid splintering hardwood table saw.
Exit wounds can also be a problem when cutting plywood on the table saw.
This is equally important on the band saw drill press miter saw or table saw.
There is no trick that can save your plywood sheet if your blade isn t aligned.
A zero clearance insert fully supports the wood fibers right at the cut line which will dramatically improve your cut quality.
To prevent your cut line from tearing.
The thin layers of plywood can often splinter and chip when cut with a power saw resulting in an ugly edge that looks like this.
A jigsaw works well especially for intricate cuts in doorways or around floor vents.
Retract the blade lift the guard out of the way and attach the hardboard using double faced tape.
So any splintering or tear out is going to happen on the bottom of your workpiece.
If your circular saw blade causes tear out try the method shown.
Always use an appropriate blade for plywood and be sure that it s sharp.
This means every time they re hit by a saw they start to flex pushing them out of the way and ruining your ability to make a nice clean cut.
When using round saw blades the angle at which the blade comes out of the wood is important.
The blade that came with your saw whether you bought or rented it is likely inadequate.
Start the saw then slowly lower the blade to create a zero clearance blade opening.
The best option to minimize splintering is to use what is called a zero clearance insert.
You can buy insert blanks specifically made for your saw or you can just make your own from plywood or mdf.
We strongly advise you against doing so because you are increasing a risk of kick back and making even more damage to the plywood and yourself.
First use a zero clearance insert on your tablesaw.
For a circ saw this means placing the good side down and on a table saw the good side up.
Cut a piece of 1 4 hardboard to match the size of the shoe.
Cut the flooring from the back side with a fine tooth blade to avoid splintering.
Cut in another room to avoid dust.
The chipping is most pronounced when you cut across the grain and can be severe enough to require filling if you cut carelessly.
Some people even suggest raising your blade all the way up to avoid tear out.
The veneer on oak plywood is usually very thin around 1 32 to 1 16 inch and it s prone to chipping or splintering when you cut it with most wood saws such as a circular saw or table saw.
Every table saw has a throat plate that sits around the saw blade and it s main purpose is to support wood so small pieces of wood don t go into the hole around the blade.
No matter what tool you re using the best way to reduce tearout is to surround the blade or bit with a zero clearance surface.