Hello Michael,
I did a few test with attaching a bit to the vacuum chamber of the flex-shaft gantry for height to see how deep it would go into the 2" foam and although the actual Z travel is 3 1/4" there are considerations like the pressure bar heights and the router collet and for the flex shaft one I am testing the 3/4" vacuum chamber to deal with, but from what I can tell you could do it but it would be very close with the flex-shaft attachment. With a new router attachment eliminating/reworking the vacuum chamber on the bottom I think it would work fine as that would save us some room. That being said one of the nice features of the Phlatprinter 3 is we can change pretty much everything on the machine. So in the future we could design a new gantry that we could bolt on and have more z travel too
Mark and Trish

 

Hi Michael,
We have found a few bits that we like to use with foam on the Phlatprinters. The stock bit is a 1/8 tile grout removal bit and we also like the 1/16th version. We are including the 1/8th with the kit and sell a bit kit on our store, but at the moment have not ad the chance to post them. We will be adding them soon. The bit kit has a few more options to choose from.
I am sure as we move forward with this machine we will find many different bits for many different materials that we will like o use and it will be nice to build a data sheet of what bit styles work best with what materials and the tools they are used with.
Thanks
Mark and Trish

 

For wood, I have used the /16" bit Mark and Trish sell, and a 2 and a 4 flute end mill from Enco. As for the end mills, as expected the 4 flute gives the nicest cut but at a slower feed rate than the 2 flute. All in all they all worked well enough for my needs. THe last full balsa kit I cut with mine I used the bit from Mark and Trish, It was not as smooth as the 4 flute, (still plenty smooth enough though) but I was able to bump the feed rate up.

So yea, a chart of speeds and feeds specific to our use would be great.