Has anyone cut Coroplast on their Shapeoko?

How To Machining
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I have a customer who wants to make some signs from Coroplast (corrugated plastic). Has anyone worked with this material and can share some effective bit and feeds and speeds combinations???

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We have a video on this:

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Here are a couple I did on it as well.

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Thanks guys! I’ll take a look at the vids

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@WillAdams @CullenS Thanks again guys…very helpful.

@CullenS Those are nice additions (the pen holder and SST) - where did you get those?

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The pen holder is from NextWave

I bought it about a week before Carbide3D released theirs. It works but it’s kinda expensive. I have never seen it swivel BTW so there is a lot of wasted engineering there.

The Dragknife is from Stupid Simple Tools.
It works well but I have only used it a few times. It’s cheaper than the Donek one most people talk about

Note that their exterior packaging doesn’t differentiate between the shaft sizes for some dumb reason and the first one they sent me was a 1/2” shaft which I couldn’t use.

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Carbide’s seems simple enough - and at $20 makes sense. I need to decide if I really need to use a sharpie though…and would zip-tying it to the Sweepy suffice…

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That material is not very flat so the spring loaded holders may have a slight advantage.

With mine it’s a bit fiddley to set the sharpie such that its tip is at the center of the shaft. Just takes a little practice.

For the ones that are mounted on the side it seems
Like setting zero to the tip would be a lot easier.

Simply zip tying may work but be careful about the marker slipping in one axis which would throw the whole thing off.

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Yeah…and changing colors would be problematic with registration, etc. A holder is a better idea

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I created a different toolpath and file for each color. You could probably fake that with bogus tools in your library but don’t know if the bitsetter and a sharpie would play well together.

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Worth a mention, I work with Coro all the time. I hand cut all of my Coro 3-10mm with a quality hobby knife and blade. It is a tricky material to get very detailed with, and workholding is an issue. Hand cutting is usually faster, easier, and cleaner than CNC (depending on how bad my knuckles hurt).

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