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Post by gullyfoyle on Feb 26, 2013 17:23:22 GMT -8
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Post by gullyfoyle on Feb 27, 2013 5:52:05 GMT -8
I found this on Amazon www.amazon.com/INCRA-Build-It-Panel-Large-2-Inch/dp/B000W08TVA/ref=pd_rhf_cr_s_cp_6_JS9CThat made me think of using this as a template for what would be essentially a sacrificial board. Piece of plywood the dimensions of the table, drill some evenly spaced holes, make a clamp board supporting various sizes. Today I tested a 1/4 piece. I used the Incra clamp, eats about 1/2 inch of the edge, two mirror hangers at the top to hold it in place and at 0 and another piece of wood clamped across the bottom with just the supplied clamp. And the supplied clamps. Possibly overly secured. I ran a simple image fast and at .80 and everything held up just fine. Next I'll spring for some acrylic. I think the Incra is a bit too large. I'll wind up cutting some small pieces of wood and using the Incra knob set to make something smaller. The window clamps I used wingnuts on, and may work in that direction so as to limit the size of the clamp.
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Post by Greg on Feb 28, 2013 23:51:30 GMT -8
All this talk about mirror clamps reminded me of the mirror cutting bits I saw on toolstoday.com I also have a 3/4 plywood part I will use as sacrificial bottom but keep an eye on warp, I may use those carriage bolts to make sure the plywood is flat on the deck.
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Post by gullyfoyle on Mar 1, 2013 6:27:48 GMT -8
With the Incra clamps you only need a sacrificial board if you are doing cut through. Any clamping to keep the material in place is all required.
.125 is an eight of an inch, half the depth of a quarter inch board. Pictures tend to work at .08 and .100. More than enough room to spare on thinner wood.
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Post by Deleted on Feb 4, 2014 8:51:38 GMT -8
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Post by Deleted on Feb 4, 2014 10:35:38 GMT -8
I cheaped out, went to lowes and got some 2" long 1/4" bolts square nuts to fit the track and fender washers. I put a nut on first then the fender washer, and bottom square nut for the track. I tighten the bolt nut in the track and then crank the top nut above the fender washer down to the material, works great and didn't cost me 40 bucks.
Addendum: I place a scrap piece that is comparable thickness of wood I'm carving on other side of the fender washer to hold it level.
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Post by Greg on Feb 12, 2014 17:55:57 GMT -8
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