2-In rigid foam cutting success!

Projects
1

Just wanted to share that I have finally been successful in cutting 2-in thick rigid foam board. Thanks again to everybody on the message board who helped me get through the initial challenges and unique use case.

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2

I am glad to hear it!

What are you making? Is it insulation panels for a dome?

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Yes, insulation panels for the dome. Just need to do about 100 more triangles :slightly_smiling_face:. Also using Maslow for the geometric wooden fasteners at each node point.

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4

Wes wrote:

Just wanted to share that I have finally been successful in cutting 2-in thick
rigid foam board. Thanks again to everybody on the message board who helped me
get through the initial challenges and unique use case.

great to see, what did you finally end up using for your bit, router speed, and
feed rate?

David Lang

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5

Cool. Those are coming out really well.

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I’m using the lowest router speed and 1444 feed rate currently. I’ll keep trying to kick up the feed rate to see what the max is.
This is my router bit:

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Wes wrote:

I¢m using the lowest router speed and 1444 feed rate currently. I¢ll keep trying to kick up the feed rate to see what the max is.
This is my router bit:
BFVV Extra Long Upcut Spiral Router Bit 1/4 Inch Shank, 1/4" Cutting Dia. 2" CL. 4" OVL. Router Bit with DLC Coating, Tungsten Carbide CNC End Mill for Wood Carving Grooves & Mortises - Amazon.com

any problems with it trying to pick up the foam?

David Lang

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Do you mean problems pulling out the cuttings?

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Wes wrote:

Do you mean problems pulling out the cuttings?

Thinking again about it, it was a dumb question for your work. If you were doing
small pieces (especially pieces that you first profile the top on and then cut
out), then the upcut bit could pull them up away from the wasteboard.

but cutting all the way through, all the parts are up against the sled all the
time, so the bit pulling the material up is just not going to happen.

sorry for the confusion.

David Lang

1 Like
10

Cool project! I was wondering if this was possible - looks like it certainly is!

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Are you cutting out in a single pass?

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Yes; single pass. I changed my spoilboard to 1" foam and that made things a lot quieter.

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