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IF you are not yet using a peck type feed on your drill, try it. What that does is brings swarf to the surface and allows a cooler drilling. Ok, "peck drilling" is setting the down feed to retract...

A fixture made of Corian counter top material would be sturdy and allow the use of hardware. Also, it can be machined with normal wood working equipment.

YMMV
~Richard
Local cabinet supply house...

There are a lot of wild belt grinder conversions on "Pinterest." Many home made 2x72s and assorted others. from around the world.
Have fun!
~Richard