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Vacuum Form Build part Seven << Prev   Next >>
Building the Platen.
By Deadline on Sep 12 2010 Category:Vacuum Form

The finished PlatenThe Platen. This is one of the key ways that you get a really good vacuum form. To produce a good high definition product from a vacuum form you need high pressure. Or really very low pressure. About 25" hg. You can't get that from a vacuum cleaner. They only get about 6". So you need tanks and you need to pull the vacuum from underneath allowing the normal atmosphere pressure to press down on the plastic, forming it into the details of your mold. The Platen makes that possible. By keeping the volume of the Platen down you reduce loss during the process. So these two sheets of aluminum with a very small gap and 450 holes do that. Here is where you need. LOTS of time and a good drill press doesn't hurt. Clearing the burs by hand was the toughest part of this job. Building this one 2 x 2 took most a weekend and every night for a week. I still need to build the 2x3 and a 2x4. If anyone knows of a better way to make 600 - 900 holes without burs, let me know.

 
The Platen
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Debur- ugh
Debur- ugh
Hammer forming
Hammer forming
The Platen
The Platen
The Platen
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The Platen
The Platen
The Platen
The Platen
The Platen
The Platen

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