That you for this. I make tires for my combat robots from eva foam, been using my cricut to cut them from 2mm sheets and gluing them together to get the desired width. I have a bunch of those foam floor mats and am about finished building a mpcnc so cutting my tires from that will be my first project. I have no clue how to choose bits so this gets me on the right track for these projects. Gluing the layers resulted in out of round, uneven tires that needed a lot of truing on my homemade tire truer. Hoping the cnc'd ones will need only a quick truing before applying traction compound. Will also go from 15-20 minutes a tire to 5ish, which really adds up on a 4WD that needs at least 3 sets of spares on hand at fights. Maybe my second cnc project will be foam chassis inserts for shock absorption around the electronics. I know a billet HDPE chassis is also on my list.
Try undercut milling for the finish cut instead of climb milling. I pocket clear by climb milling so that the foam doesn't peel off in a long strand, and get picked up by the cutter. I then do a finish cut (0.2mm) by undercut milling, and this leaves a neat edge.
How did you fasten the material to the spoil board? I'm trying to router a 1/4" rubber mat and am having trouble keeping stuck to the spoil board. I need to be able to remove it once I'm done.
You might get better results with a slower spindle speed and fast feed rate. The feeds and speeds for most foam cutting bits have a slow spindle speed.
Amana Tool RCK-361 Solid Carbide Insert 30 Deg x 0.010 - amzn.to/2UoA29t Amana Tool RC-1075 CNC In-Groove Insert Engraving Tool Body 1/4 Inch SHK x 2-1/2 Inch Long - amzn.to/2Dh2mF8
It’s 3/4” thick and fairly dense. I think as long as you test your speeds and feeds you won’t have any problems either way. Down cutting seems to make the biggest difference.
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That you for this. I make tires for my combat robots from eva foam, been using my cricut to cut them from 2mm sheets and gluing them together to get the desired width. I have a bunch of those foam floor mats and am about finished building a mpcnc so cutting my tires from that will be my first project. I have no clue how to choose bits so this gets me on the right track for these projects. Gluing the layers resulted in out of round, uneven tires that needed a lot of truing on my homemade tire truer. Hoping the cnc'd ones will need only a quick truing before applying traction compound. Will also go from 15-20 minutes a tire to 5ish, which really adds up on a 4WD that needs at least 3 sets of spares on hand at fights.
Maybe my second cnc project will be foam chassis inserts for shock absorption around the electronics. I know a billet HDPE chassis is also on my list.
Thank you so much for making this video. Saved me a lot of time and effort having to do these experiments myself.
conventional works much better than climb on foam from my testing.
Try undercut milling for the finish cut instead of climb milling. I pocket clear by climb milling so that the foam doesn't peel off in a long strand, and get picked up by the cutter. I then do a finish cut (0.2mm) by undercut milling, and this leaves a neat edge.
Thanks, I’ll try that!
Yes I fine this to work great also
How did you fasten the material to the spoil board? I'm trying to router a 1/4" rubber mat and am having trouble keeping stuck to the spoil board. I need to be able to remove it once I'm done.
You might get better results with a slower spindle speed and fast feed rate. The feeds and speeds for most foam cutting bits have a slow spindle speed.
Hi witch better and clean to cut foam cnc or laser co2? And can change the head to knife head?
You just saved my day!
Thank you.
Cool!
EVA foam actually laser cuts very well
I would love to get one at some point
laser that thing
Check my video with EVA tiles
Will do
Well I was thinking the same thing but as I saw from your video the result is horrible :) Thanks for sharing
What kind of end mill did you use for the lettering?
Amana Tool RCK-361 Solid Carbide Insert 30 Deg x 0.010 - amzn.to/2UoA29t
Amana Tool RC-1075 CNC In-Groove Insert Engraving Tool Body 1/4 Inch SHK x 2-1/2 Inch Long - amzn.to/2Dh2mF8
Does it matter what bit you use?
Also is the first one high density or low density, and how thick is it?
Yeah, I would recommend a down cutting or compression bit. Made a huge difference in wall quality compared to an up cut.
Thank you!
It’s 3/4” thick and fairly dense. I think as long as you test your speeds and feeds you won’t have any problems either way. Down cutting seems to make the biggest difference.
Polished endmills, try, will make a world of difference.
Hello! And what kind of machine do you use?
This is the 18” x 24” Solsylva built from a set of plans.