http://209.20.76.247/ss/assets/HowTo-Publications/Vacuum-Bagging-Techniques.pdf
A venturi vacuum generator with a bronze muffler is a cheap way, the venturi generator develops 10 psi at 1 SCFM and is designed to run off shop air with at least 60 psi at 2 SCFM. This uses air from a compressor...
Use a longer surface for sanding like a 2x4 with sandpaper on it the wavyness can come from using smaller power sanding tools and filling small areas at a time
Matt's got it, 100 hours at least materials for your inserts add up also every dollar counts when attempting to get the most cost effective part. Your first parts will take you a lot more time and every time you will get faster and better it is so muc fun though!! Congrats on getting the molds...
Milled fibers mixed with resin to a peanut butter consistency, I like to use a 1" thick piece of ss or alum drill and tap for an attachment like an sj or anything else u can find. Mix the glue make a pile stick the square plate in let cure, can use foam or again milled fibers to make 45 deg...
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