dkj4linux Show full post »
I now have a tachometer to set the speed, smaller needle with a .025 mig tip guide, and a vacuum table to keep the foam sheet in place.

I'm getting great cuts on foamboard where the bottom looks almost as good as the top.  Parts pop out nice and cleanly too.

Thanks for your advice David.  Very happy with how this is working now.





Part out:
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Looking good! Glad to hear it's working pretty well for you. Look forward to seeing some planes built with your needle-cut parts 😉
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For folks who would like to build their own CNC, Thomas Sanlanderer who is the DIY 3d print/CNC guru on Youtube, you can follow him along. His builds are to point and very detailed and of course easy to follow. He'll have a whole bunch of videos for you to follow along and has a great website for the link to source parts from. Here's the first video of the build series, please take a look at the description in the video and follow along the links:
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Thank you, KK, for giving folks here a heads up. I've watched the first couple of parts of this MPCNC build and it'll really be a great help to someone contemplating building one.

Tom has been somewhat critical of the non-open source aspect of the build... but he, like most folks, are not aware that, early on, some very shoddily-designed "improvement" parts appeared on Thingiverse and elsewhere... and then angry, frustrated, builders appeared on the MPCNC forum demanding help with their "improved" machines and openly "bashed" the MPCNC as a poorly-designed piece of junk, which it obviously is not. So, out of self-defense and to protect the MPCNC "brand" from wide-spread stealing and copy-catting, Ryan doesn't share the design files. But anyone truly capable of actually DESIGNING good parts for MPCNC or other machines will also know how to get all the information they need to make good parts from the STLs freely provided out on Thingiverse. 

Just as importantly, Tom, and others, need to recognize that, though not open-source, there is tremendous value in the incredibly active community surrounding the MPCNC... and all the help required to build these machine is only a few keystrokes away. And Ryan himself is a very active forum participant and avid supporter of his work... and generously shares information about the designs when asked. Years and thousands of successful machine builds later, the MPCNC is still IMHO one of the most inexpensive, fantastically supported, highly educational, and versatile projects that a DIYer can take on. No affiliation... I'm just an incredibly satisfied customer/user and builder of more than a dozen MPCNCs and variants.  -- David
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