RAS Rotary Miter Table

I love my RAS's for crosscutting but have never liked how difficult they are to set up for miter work or not knowing if the arm will actually be 90 degrees again when I reset it.   To address that I designed a rotary miter table that will allow you to cut just about any angle, quickly and very accurately. 

The rotary miter table will pivot left or right  to any angle from 90 to nearly 35 degrees, and has a positional accuracy of less than 1/4 degree.  The sawhead always stays at 90 degrees.  That gives you full crosscut capacity at any angle and also assures the accuracy is unchanged at 90 degrees when the rotary miter table is removed.  Note that cutting on the left side is something that cannot be done without this table, and that gives you all capability of a miter saw, as well as greater capacity.  Also, there is a fence insert which is replaceable and reuseable, so you always have a clean reference for aligning your work, and it also allows you to use a dado stack.  

It's easily mounted to the saw table, and can be removed or reinstalled in less than 1 minute.  It will fit on any RAS.  Calibration is done at 90 degrees by aligning the scale with the center of the kerf or a line drawn at 90 degrees from the fence.  After that, accuracy of any angle is assured because the unit is milled on my CNC. 

I cut these miters, left and right,  without checking a test cut first:

The rotarty miter table is 32" x 17" and made from high quality plywood.  I used 3/4" MDO for the one in the photos.  On smaller RAS's it may be necessary to add a supplemental table to provide enough depth for the fine adjustment bracket to be installed at the front of the Rotary Miter Table. 

Send me a message or email if you'd like to add a rotary miter table to your RAS. 

Update:

The rotary miter table can cut bevels and compound angles just as easily as simple miters, and also with full crosscut capacity.   By mounting the rotary miter table onto a supplemental table you can move it so that the sawblade stays aligned with the 90 degree kerf line, just as it was set up for vertical cuts.  Here it is set with the blade at 45 degrees.

Once it has been set, the rotary miter table can cut simple bevels, at any angle, here at 90 degrees.

You can cut compound miters just as easily.  Just pivot the rotary miter table to the angle needed, here it is set to  cut 45 deg miter plus 45 deg bevel.  

By installing a new replaceable insert in the fence, the kerf can be used for precise placement of the part to be cut.  And you can label and save them for future use.