Machining Alumilite castings

[Joe @ Perfect Fit]

I need to machine a series of trivial mostly flat molds for pouring fine concrete in. Given the complexity of the surface and the fact I was hoping to do this on a Thermwood router, I need a stable waterproof material. 2" PVC could work, but is rather expensive (~$1500.00 per 4'x8').

 

Anyone ever poured and machined Alumilite? Its cheap and would work fine for the few tests I need. Seems to be about ~$30.00 per Litre...

 

Thanks!

[Dave Ball]

The volume of 2" x 4' x 8' is just a tad over 151 litres x $30.00 per litre = $4530.00

[Joe @ Perfect Fit]

I don't need 4x8, it was just this was all I could buy, probably only a couple pieces ~12"x16"x2"...

[Joseph]

Do a search for HDU High Density Urethane or sign foam.

It's still expensive, but may be an option.

[GoetzInd]

McMaster 2" by 12" by 24" $179 p/n 8747K133

 

http://www.mcmaster.com/#plastics/=ah266f