I just finished converting a router table and this is my first test piece.
Everything works great, and all dimensions but one are right on size except the 2 1/2" diameter hole in the center.
For some odd reason, it measures 2.420" ??
I really have no clue why just that one hole would have machined smaller.
Hopefully someone has an idea.

I'm using OnShape for my .DXF drawings, and Dolphin CAD/CAM to generate the G-code.
Machine is running on Mach4 with ESS.

I've enclosed the drawing, but I'm unable to post the complete .TAP file used to cut the part, so I posted the first part of the program because the 2 1/2" hole gets machined first.
I will also ask on the Dolphin Cad forum.
Thanks for any help.
Dan