PVC and paint mask

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Perry
Vectric Craftsman
Posts: 174
Joined: Mon Oct 24, 2005 11:06 am
Model of CNC Machine: Modified Shopbot PRT96
Location: Windsor, ON, Canada

PVC and paint mask

Post by Perry »

Hi guys.
I attempted, for the very first time, to use paint mask. I attempted to use it on a Photo V-Carved image being cut into white melamine using a new (out of the box!) 60* V bit. Speed was 1.5 in/sec. Router speed ~20,000 rpm.

I must say the results I got were less than impressive. I appologize for not taking any pictures of the resulsts as I just didn't think.
I would say that the results indicated a good cleancut of the mask as the cutter was moving in a conventional direction. As the cutter moved in a climb cutting direction, it "feathered" and lifted the mask.

As I stated, this is a first attempt for me with the use of a mask. Is there something I am missing? Is this typical of mask when climb cutting? Is there a recourse, a step to ensure better results.

I have hunted locally for quite a while to locate somewhere locally to purchase paint mask and when I finally get some, to have the results I got, very disheartening.

I have heard the virtues of the use of mask on this forum and the Shopbot forum. I just wander if this may not be a practical application for it.

Any suggestions?
Thanks.

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dighsx
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Joined: Tue Nov 01, 2005 12:36 am
Location: Royal Oak, Michigan USA
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Post by dighsx »

How far apart were your cuts? I've had mixed results with paint mask when the cuts are close together. For doing signs and bigger work I love the stuff. For small detail work, slower seems to do better. Also making sure you have it really rubbed down helps some.
Take it easy.
Jay (www.cncjay.com)

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Perry
Vectric Craftsman
Posts: 174
Joined: Mon Oct 24, 2005 11:06 am
Model of CNC Machine: Modified Shopbot PRT96
Location: Windsor, ON, Canada

Post by Perry »

It turns out that particular sheet of melamine was very loose in its composition. It is now shelving. Will attempt again when I pick up a new sheet.

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