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the project is very interesting considering the material of choise,
Pass or fail, I think it has broaden the insites of some of the DIYers as to the mediums we can use.
Now what I would like to see, is a HOW TO article writen up on just how you made the parts. From start to finish, to get an idea as to what other uses it may have (Jet knozzels comes to mind) and how hard or easy it is to work with.
PLEASE.... I asked nicley
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Thanks, you flatter me
I don’t consider myself an expert in plastics; just have some DIY experience that can be helpful for the novice. Unfortunately can’t make a step by step guide as I don’t have many pictures of the process. Now I have the pump almost done but my brother is using the digicam for some days so there’s no pics to show.
The most commonly available resin for diy work is polyester, it’s very cheap and hard, but brittle. It requires precise dosification of components at hard to measure 50/1 relationships. That’s why I prefer epoxy, It’s more expensive but easier to mix, and very tough. It’s clear and can be polished for a crystal finish but you need to be very careful at mixing, as it likes to trap tiny bubbles. Ideally you should put the fresh mix in a vacuum chamber to extract all bubbles, but that’s not common equipment for DIYers. Another thing important with epoxy is curing; it could take weeks to reach at ambient temps the hardness you get with some hours of heat. In summer just can be left under the sun (if your sun is good enough
), or leave it close to a hot lamp.
Hope this helps, feel free to ask anything you want.