Milling Foam- Speeds/Feeds

[JerryFlyGuy]

I'm working on building/designing a 3 axis mill for primarily milling foam for composite molds. I'm wondering if anyone is doing this currently and could offer some advice as to feed IPM, spindle speeds and cutter sizes at various depths. Different cutter styles used? Any advice appreciated. I was going to take my dremel out to the garage and do some simple test but figured that I might as well ask here first. My plan is to figure out at what speed I CAN mill foam and then design to meet that speed [ kinda working backward].


JerryFlyGuy

[Genguy]

Generally the company that makes the foam will provide this information.
What is the brand and model of the foam product you intend to use most often?
For example General Plastics FR-7100 Modeling Foam speed/feed/tooling recommendations can be found in the product pdf .

[JerryFlyGuy]

Thanks Genguy, I'm actually planning on using a 2 part pour foam, there's many places to get it off the market the first one that pops to mind is called x-30 it can be seen here [http://www.aircraftspruce.com/catalo...s/x30foam.php]
I probably won't buy it from them simply because of the hassel of getting it across the boarder into Canada, I've talked to local suppliers and can get something comparable. However, looking at the link you posted is a great help. I think the milling qualities should be very compariable to Last-A-Foam as they are both similar. It is possible that w/ a fairly open cell pour foam that I would be able to feed even faster than what they claim there.. It gets me in the ball park at least!!

Thanks again!
JerryFlyGuy