LumberJocks Woodworking Forum banner

How do you measure 90

4.8K views 76 replies 43 participants last post by  oldnovice  
#1 · (Edited by Moderator)
What do you guys and gals use to ensure your table saw blade is at 90 degrees and not one or two degrees off? Thanks.
 
#17 ·
I made a small block with a dial indicator mounted to it and a small round head screw screwed in below the indicator probe. To use I push it against the blade (lightly) and zero the indicator then do the other side of the blade. If the readings match then the blade is 90 degrees to the table. If the readings don"t match then I tilt until half the error is removed and re-test the other side. Probably takes 30 seconds and best of all I don't have to bend over to do the process.
 
#21 ·
I don't mean to hijack the thread but since the digital angle cube is mentioned here, I thought I would ask… what is the best technique to use angle cube on a table saw blade? The way I have done it so far is to extend the blade to its maximum height, put the cube on the table and zero it out, then put it close to the highest point of the blade and adjust the bevel. But this creates a moment due to the weight of the cube being so far away from the center and causes the blade to move. Any ideas on how to avoid this?
 
#25 ·
I am kinda shocked, everyone is talking about the cool tools they have…
I just cut two pieces of wood on the saw, put them on a flat surface.. like table saw i am using… and face them together if there is a space I adjust the saw angle… no space.. perfect 90 degrees. :)
 
#26 ·
Digital angle cube
but also as a designer I have few accurate 90 plastic triangles that I trust very much and even check with those the accuracy of the digital cube LOL
So if you don't have a cube get a good triangle and it will not failed you