For the groove i set the blade height to 1 2.
Tongue and groove table saw blade.
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You can do it all at the router table easily with three different cutter approaches.
Cutting the narrow centered groove and the corresponding tongue to fit into it doesn t take a dado blade and table saw.
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For the tongue use a regular blade also.
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Bury part of the blade in the fence by lowering the blade below the table.
This causes the diamond grit to wear away and expose more diamond grit.
There are diy applications for this joint too such as v groove wainscot or wood flooring.
Moving the auxiliary fence over the blade.
It could be 1 4 to 3 16ths wide.
The tongue and groove is one of the most basic and useful joints.
Run your piece on both sides.
Measure your tongue opening to try and get the proper fit but use a scrap piece to make trial cuts until you get a snug fit.
I use a standard kerf width table saw blade usually a combination blade to make all of the cuts when forming tongue and groove joints.
I use the two outside cutters to produce a 1 4 cut width when working 3 4 stock.
And with the saw turned on slowly raising the blade into the auxiliary fence.
You can now fine tune the width of your rabbet by adjusting your rip fence instead of the width of your dado set.
Generally speaking it s easier to cut the groove of a t g joint first then mill the tongue to fit the groove.
Timberline 640 140 continuous rim diamond 7 7 1 4 inch d 5 8 bore with 7 8 diamond knockout circular diamond saw blade rotating blade into the surface of the material causing the diamonds to cut a groove in the material.
Then hold a piece of the stock against the fence and adjust that position so that the blade makes its cut as close to centered as you can get it by eye.
Make the usual double pass to guarantee that your groove is exactly centered.
Every woodworker should be familiar with cutting them on the table saw.
On the table saw to produce a tongue and groove on the table saw use a dado cutter rather than your everyday blade unless your stock is 3 8 or less in thickness.
Thicker stock calls for a wider groove.