Quote:
Originally Posted by Varn
Hi Donee
The biggest parts that I have made with vacuum bagging is probably on the order of 20-30 square feet with 20 oz of material. The fun begins when you can't get a vacuum because of leak. For the larger parts such as this, I would use a slow or ultra slow set epoxy. The trick I have found is to spray glue the reinforcement cloth to the mold. I have only had one time where I couldn't get vacuum and my part, a recumbent bicycle seat came out with too much epoxy.
If I were doing some production work vacuum infusion might be an advantage but thought it to be unnecessary for the size of and thickness of parts that were being made. Perhaps you might share some of your projects.
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Hi Varn,
Oh, I am hardly a composites professional. I have only done some stressed skined plate vacuum bagging for a completely off-topic project.
One great help with Vacuum Bagging is to make a Vacuum Resoviour. Its easy, just use a pressure tank, with a valve. The quick application of Vacuum will help seal allot of small leaks.
I also made a control box for a Gast 1/2 HP vacuum pump I have. It used a vacuum pressure switch to maintain at least 10 PSI of vacuum.
But, the vacuum bagging table, and pump are all in storage. I needed the room in the kitchen for the 3 axis CNC project (which has been up and working for several years now) ;-)....