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General Mach Discussion / Re: Ditching the Vacuum Hold Down
« on: February 01, 2016, 07:15:57 AM »
If you have a perfect vacuum then the hold-down pressure is 14.696 p.s.i. If you are only holding on small areas of the work (to enable cutting- through) then, I think, you can calculate the requirements.
I use a vacuum table for small engraving jobs but I never use it for cutting through ( including pcb hole drilling ) but when it does come to cutting through, I ditch the vacuum table and double sided sticky tape becomes my best friend.
I must admit I do like the idea of onion skinning and sanding free but why not just use tabs ( created in the CAD/CAM ) and then break free ??
Tweakie.
I use a vacuum table for small engraving jobs but I never use it for cutting through ( including pcb hole drilling ) but when it does come to cutting through, I ditch the vacuum table and double sided sticky tape becomes my best friend.
I must admit I do like the idea of onion skinning and sanding free but why not just use tabs ( created in the CAD/CAM ) and then break free ??
Tweakie.