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Anonymous
615 Views, 3 Replies

Tolerance Problems with Shopsabre CNC

Hello, 

 

I'm having some strange tolerance problems with my Shopsabre RC8 CNC. The design is a type of dovetail joint and in Fusion the tail is modeled at 1.49 inches but when machined and checked with a caliper the tail measures 1.513 inches. The socket is also off, design to be 1.51 inches, cut to 1.49 inches. So it seems like the toolpath is .01 inches away from the workpiece making adding .01 to each side of the tail and socket (making the tail wider by .02 and the socket thinner by .02, a tolerance collision of .04??? 🤯) 

 

There are no finishing/roughing passes that are offsetting the toolpath, the bit is brand new, the compensation type is set to in computer and I am not doing any editing to the post file in the controller. 

 

Does anyone have any ideas on what might be going on and how I can troubleshoot this? Link to the Fusion file is below and I attached some pictures and screenshots.

 

 

Fusion file: https://a360.co/2ElFyE2

 

Tail - Screen Shot .png

Picture of cut piece.jpg

Socket - Screen Shot.png

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