Posts made in August, 2012

Vacuum Doesn’t Suck!

Posted by on Aug 12, 2012 in Articles & Tutorials, Instructions and FAQs, Prototyping

Having implemented my guitars in serial production over in Ohio (see previous post) I finally had a picture of how things were done in larger scale. Two things stuck out, both driven by vacuum, and I brought materials back home with me. Now that I have them running, I don’t know how I could do without them for so long. But it took some experimenting… I find that the biggest challenge in running a CNC is figuring out the ordering of the steps, from a construction perspective and from a tool change minimization perspective (my small hobby CNC needs to have tools changed manually). The next challenge is figuring out how to fasten the workpiece so that any screw holes will be milled away in a subsequent step, or hidden by another part. When I first got it, I broke several bits and ruined several workpieces by running into them and causing all kinds of mayhem. All in all, pretty tricky. Now, the second challenge is much easier to overcome, but having said that, I have revisit the first for every single operation… First, here is the end result: The front of #20 is being routed for cavities and the bridges, held to the table by vacuum. And here...

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