On 15/01/16 12:11, Jeff Liebermann wrote:
On Thu, 14 Jan 2016 23:01:20 -0000, "Gareth Magennis"
wrote:

Anyone any such experience here?
I know it's a long shot.

Google for "mold your own rubber parts" or "cast your own rubber
parts". Lots of lousy videos on YouTube on how to mold rubber parts.
I use Plaster of Paris for the mold, Devcon Flexane 94 Liquid 15250
two part urethane rubber
http://www.devcon.com/products/products.cfm?family=Flexane%C2%AE%2094%20Liquid
http://www.amazon.com/Devcon-15250-Black-Flexane-Liquid/dp/B00065TLJK
and Vaseline or silicon grease for mold release. Careful when storing
the stuff as the stuff in the bottle attacks the bottle and causes it
to leak. It cures in 10-15 mins, so be prepared to work fast.
Although it's made for making flex molds, it's also the right stuff
for making fairly hard rubber buttons, gaskets, shock mounts, seals,
etc.

It's a good idea to de-air the mix in a vacuum flash for a while after
mixing. It's amazing how much air gets in - until you see the bubbles
magically appear as you apply vacuum it's hard to believe.