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15-11-2017 #1
Hi,
I am wanting to make a silicon mould of a piece I will be milling (so that i can reproduce it)therefore the aesthetics of the original aren't important- when i've done this before with pieces that are 2d (or comprised mainly of 2d parts) i've used plywood with a little beech for any small 3d bits. As i'm sure everyone here knows, solid timber can be quite costly, just wondering if anyone has any alternative, cheaper suggestions that can hold 3d designs to a depth of about 14mm.
Thanks in advance,
Mark
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15-11-2017 #2
Some form of hard foam? Would this work?
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15-11-2017 #3
Machine wax, here's one supplier, there are others, http://trycut.co.uk/
It's quite expensive but there's no waste as it just remelts back to a block.
So after the initial cost each part made is essentially freeLast edited by EddyCurrent; 15-11-2017 at 03:57 PM.
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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15-11-2017 #4
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15-11-2017 #5
There are some recipes on line for home-brewed machinable wax, one involves Paraffin Wax, old carrier bags and an old deep fat fryer, must try it some time :D
You think that's too expensive? You're not a Model Engineer are you? :D
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15-11-2017 #6
Was snooping around looking at the waxes and came across this.
http://www.collegeengineering.co.uk/...ials/testfoam/
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15-11-2017 #7
I think these waxes and foams are a great idea to test out tool paths on a complex piece before risking it on the real thing. They are not cheap though...
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16-11-2017 #8
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16-11-2017 #9
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16-11-2017 #10
Whatever it takes to keep friction down and without deformation of the wax, a relatively slow spindle speed but a relatively high feed rate. ("relatively" meaning, I don't know an exact number for certain )
Last edited by EddyCurrent; 16-11-2017 at 11:30 AM.
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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