I have reconfigured this first post to serve as a table of contents for previous builds and brief summary of the current build. Please see Post #2 for the build introduction. Table of Contents: Build #1 - Infinity Reference-9630x 6x9, Infinity Kappa 62ix, Dynamat (September 2021) Post #2...
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Post #842 - you can see how my waveguide/concave area were formed and shaped
You can lay glass on any form. Doesn't matter what the form is made of. Hot glue, scissors, some flexible poster paper and some sanded down foam can make just about any shape you want to glass.
Foam you can dissolve after with a little acetone.
This is a valuable trick and it is also used when making concrete sinks to leave an overflow port. Making the full concave shape in foam and then covering it could make a hard job easier. Put aluminum tape and mold release on it if you’re able to remove the foam from the fiberglass without using a noxious chemical such as acetone.
From a durability standpoint best way is to make them this way with fiberglass,.... When doing this kind of shapes only with filler, some cracks may accour on transition from ABS pillar to that dented/concave part, so it is wise to lay at least one layer fiberglass mat over that part to prevent filler cracking
You can do it really fast when you make shape out of ALU tape instead you waste time with cardboard templates.
Question for you. When you are forming your templates out of the the aluminium tape, are you just using multiple layer of the tape to give it rigidity? I see sometime you cut up cardboard also, but I'm assuming that is purely to get the shape cut out.
So 2-3layers of alu tape will support fiberglass putty without deformation?
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