9 Attachment(s)
Vacuum chuck for PCB milling and engraving.
I present a description of a small vacuum chuck that I made for holding pieces of PCB for isolation milling as well as pieces for engraving.
Attachment 28165 Attachment 28166 Click thumbnails for full size.
Above we have a couple of test examples. The milling was done with a small D bit in a high speed spindle clamped to the quill.
Attachment 28175
I have put a 20 minute video on Youtube
https://youtu.be/Xn7rKm1RwYM
In that I describe the manufacture of the chuck as well as discuss the vacuum needed and ways to get it. The process of milling some pieces is also shown. Don't forget to like, share and subscribe to the video channel to ensure notice of forthcoming videos.
In the meantime here are a few stills.
Attachment 28167 Attachment 28168
Attachment 28169 Attachment 28170
Attachment 28171 Attachment 28172
Bob Warfield has posted an interesting article on vacuum workholding aimed at CNC routers which can be found at:
Vacuum workholding
There was a recent post on this forum about using fridge motors for vacuum pumps http://www.homemadetools.net/forum/h...uum-pump-71121