CNC Machined Polyurethane Foam Sealing


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scottracing
scottracing
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JLiang - 1/19/2020 9:58:41 PM
scottracing - 1/19/2020 9:42:01 PM
you will be surprised at the cost of ali tooling against epoxy tooling board,a lot of the tools I make are now made out of aluminiumbescuase of the overall cost is much cheaper.

A good machined and polished ali tool will give very good results with chemical release agents.

I looked into a few metal moulds, the trouble with my particular part is it's fairly deep, so the stock needs to be quite thick. It does seem easier to work with though! 

What sort of surface treatment do you do? Just wax and PVA? Sounds like it would save a ton of time.


As chris says above,i would use a chemical release agent system. Marbocote is my preffered choice but Chemtrend and Frekote will work too.


JLiang
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Perfect. Thanks everyone for all your replies, much appreciated!
allankn
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Chris, just checked out your site and your videos. What a gem!
Watch the whole series building the Hyperloop shell. Great!
Definitely a subscriber.

-Allan
Hanaldo
Hanaldo
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Aluminium must be much cheaper in the UK/US. I got a quote to have a 300x125 mould machined here, and local suppliers wanted AU$500 just for the billet and another $700 to machine it. I bought a 1500x500x50 block of PU tooling board for $275 and machined it myself...



Chris Rogers
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allankn - 2/5/2020 8:57:13 PM
Chris, just checked out your site and your videos. What a gem!Watch the whole series building the Hyperloop shell. Great!Definitely a subscriber.-Allan

Thanks Allan!  Great to hear that it is helpful.  It's only the beginning, but I'm having lots of fun doing it!  





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