You can do it all at the router table easily with three different cutter approaches.
Tongue and groove table saw blade.
For the tongue use a regular blade also.
Thicker stock calls for a wider groove.
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.
Blades llc carbide tipped saw blades router bits shaper cutters shaper bits woodworking cutting tools our tongue and groove cutters include wedge tongue groove 1 2 3 4 bore v paneling and flooring cutter sets.
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.
Run your piece on both sides.
Every woodworker should be familiar with cutting them on the table saw.
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.
There are diy applications for this joint too such as v groove wainscot or wood flooring.
Generally speaking it s easier to cut the groove of a t g joint first then mill the tongue to fit the groove.
It could be 1 4 to 3 16ths wide.
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.
The tongue and groove is one of the most basic and useful joints.
You can now fine tune the width of your rabbet by adjusting your rip fence instead of the width of your dado set.
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.
The cuts made when creating the two mating workpieces of a tongue and groove joint are non through cuts meaning that the saw blade never goes all the way through the wood.
Straight bit and rabbeting bit step 1.
Official website of freud tools.
For the groove i set the blade height to 1 2.
I use the two outside cutters to produce a 1 4 cut width when working 3 4 stock.
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.
Moving the auxiliary fence over the blade.
Cutting the narrow centered groove and the corresponding tongue to fit into it doesn t take a dado blade and table saw.