Spoilboard idea...

[beacon14]

Gabe,

Maybe I can buy your 1/2" thick Trupan leftovers.

[geneb]

Mike I'm in Graham, WA. I know of no Trupan supplier within reasonable driving distance.

The vac difference between material loaded and not loaded isn't much, but it's enough to keep full sheets from scooting around while I cut. I mostly cut OSB and 1/2" MDF with 1/4 or 1/8" down shear cutter. (Centurion Tools are *awesome* )

g.

[mgranato]

Gary, with a full sheet (5x8) of mel on the table I drew 5" with a starting point of under 1". Now I get just a bit under 5, but I start at 2.5. My full sheet cuts are usually large enough to not matter. The problem is when I drop down to one 2x2 zone. My old starting point was under 1 and went to 5.5 with a 2x2 jig covering the whole zone. Now (without perfs) I'm starting at 4 and then goes to 5 with the same setup. With perfs I start a 2.5 and go to 5.

David, you beat me to it :-)

[carlcnc]

I am surprised noone has mentioned using industtrial particle board, 49x97 3/4 works great for me. it is not usually available from Lowes or the Orange box,
so in a pinch I have used 1/2 underlayment grade.
both seem much more porous than mdf
nice thing is you only have to surface the top for Z accuracy,
Carl