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  #11  
Old 02-08-2019, 09:33 AM
drummerjg drummerjg is offline
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Quote:
Originally Posted by Guylaro View Post
Haha! I hadnít thought about having a wreck Joe! But ya youíve just scared me now so I will clamp a fairly large piece of ply or mdf to the phenolic top and then Iíll fasten my workpiece to it. Have you ever used double sided tape though to hold a workpiece? -Guy
I have used double sided tape...with mixed results. For "light work" like shallow v-carving I have not had any issues. But if you get too aggressive with speeds/feeds the tape will definitely let go. I now have a vacuum which I really like. When I get to small parts I will use the CA glue/tape trick. My double sided tape has been relegated back to just woodworking uses now.
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  #12  
Old 02-09-2019, 12:08 AM
ScottM ScottM is online now
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I have been using blue tape and super glue(2P10) for all my sheet aluminum cutting for aircraft panels.

I take a piece of MDF either 2x4 or 2x2 and use my vacuum table to hold it in place. Do a quick pass using the spoil board program to flatten it out, and the blue tape the area being cut on the board and then the sheet material.

Nothing has budged yet, other then the bits I snapped when feeding to hard. (sigh)
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  #13  
Old 02-11-2019, 08:34 AM
TinKnocker TinKnocker is offline
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I saw a video on using normal tape as a hold down:

https://www.bing.com/videos/search?q...8A29&FORM=VIRE

Thought it looked like a really good technique, wouldn't work on my MDF spoil board at all, but would probably work on phenolic.
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