Re: [multimachine] Re: A REALLY cheap all purpose machine tool
- Thanks PierreI keep neglecting bell chucks even they were once universally used.They are easier to adjust if it is possible to fit some kind of a center point in the base end.Pat
From: Pierre Coueffin <pcoueffin@...>
Sent: Sunday, June 9, 2013 3:56 PM
Subject: Re: [multimachine] Re: A REALLY cheap all purpose machine tool
A bell chuck is even easier to make than the 4-jaw from the Docx file... It is just a steel pipe with a wide end and a narrow end (like a reducing adaptor from the plumbing department) with some holes drilled and tapped into the sides to hold set-screws.The set-screws act as "jaws" to hold the part. If you have 2 rows of screws you can adjust the end of your part closest to the spindle to run true using one set of screws, then adjust the other end using the other set of screws... This is very useful if you are trying to reclaim a bent scrapyard shaft by turning it true... You can pick which parts to use for reference surfaces, and true the rest of the bar to match those two points.