Originally Posted by
Sammas
Hi there!
Great site! I don't even own a CNC machine but still frequent the site quite often... salivating over possible purchases and future projects. Doing metalwork with hand tools is just plain hard work.
I am looking at getting a small machine to do assorted bits and peices. The majority will include work with anodized aluminium panels like those found on 19inch rack units. Anything 1 to 3mm thick. Stuff like IEC & XLR cutouts and engraving. Occasionally I hope to mill small prototype PCB's as well.
At present the small Taig & Sherline mills look pretty ideal... well, on paper atleast. But I have a few questions. Will something like a converted Taig 2019ER or Sherline 5400 handle these duties? I am particularly concerned about the accuracy and cleanliness of engraving the aluminium. From what I've read it is more a job of getting the correct spindle and IPM speed to achieve accurate engravings? If that is the case I am not particular worried about working slowly if it provides a better final product.
While it might not happen a lot, I am expecting that occasionally I will need to engrave the entire length of a 19inch panel. Would it be out of the question to engrave something this large in two parts, given that the table travel on both machines is on around 9inches?
Any insight or experiences would be greatly appreciated!
Cheers!
- Nath