This is a replacement for the throat inserts on the DW717 Dewalt 10" sliding compound miter saw. Simply swap this solid insert in for the two half-inserts that come in the box. Make a slow cut through this plate, and then clean up the edge with a razor. 

I recommend printing in a bright color for safety and visibility.

Notes - v1.0: 

• It prints in two halves with an interlocking joint, but I also recommend adding CA glue to eliminate the possibility of vibration
• Both halves each have 3 of the 6 screw holes, again to minimize vibration
• There is an 8mm 100% infill spine running through the center to provide extra support after slot has been cut