Gooey rollers again.
ard at p850ug1.demon.co.uk
Thu Aug 23 14:39:10 CDT 2007
> This is a great idea. I have used two part, rubber like, materials in
> the past. I found I can buy new rollers for $35 each, much too expensive
> for all 16 needed. I'll probably buy one and try to make a mold from it.
> I'll post the results.
I was thinking about mashining a mould from a block of metal and using that.
Be warened that, at least over here, those 2-part 'rubbers' are not
cheap. I think it was going to cost me over \pounds 100 for the rubber,
release agent and primer (the former to get it not to stick to the mould,
the latter to get it to stick to the hub or whatever). You are supposed
to mix the entire 500g of rubber in one go, after which you have 30
minutes to use it. If it doesn't work, you are supposed to buy a new kit,
costing over \pounds 30.
I've heard you can weigh out and mix part of the kit, though. But that
the shelf-life of the unmixed kit, once opened, is not that long (a
couple of weeks?). But long enough to let the mixed part cure overnight,
and if it didn't work, to try again.
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