Machining 4 All,
Nice looking work, but a mini lathe or any screw cutting lathe equipped with an auxiliary spindle is already capable of milling threads and will do the same work without modifications. This modification seems like a lot of work with little corresponding benefit.
This is just my personal observation.
Links to some of my plans:
http://www.homemadetools.net/forum/f...6068#post65876 OFF-SET TAILSTOCK CENTER PLANS
http://www.homemadetools.net/forum/s...995#post112113 SMALL TURRET TOOL POST PLANS
http://www.homemadetools.net/forum/l...994#post112111 LARGE TURRET TOOL POST PLANS
http://www.homemadetools.net/forum/m...383#post110340 MINI-LATHE CARRIAGE LOCK PLANS
http://www.homemadetools.net/forum/s...191#post106483 SMALL QC TOOL POST PLANS
http://www.homemadetools.net/forum/q...849#post119345 QUICK CHANGE LATHE TURRET
http://www.homemadetools.net/forum/m...949#post119893 MINI LATHE COMPOUND PIVOT MODIFICATION
Last edited by machining 4 all; May 4, 2021 at 01:11 AM.
old_toolmaker (May 15, 2021)
Machining 4 all; The only bad ideas are the ones in which an injury to a person occurs, everything else is and has a variable amount of usefulness.
Just because there is already machine which is capable of doing something doesn't necessarily mean everyone owns one or wants to buy one.
That being said I have a couple of questions about your device.
#1 do you have an indexing feature on it? I noticed in the photo of the job you are incorporating it on has multiple starts for the helix groves.
#2 Do you change the thread pitch by swapping out gear combinations?
#3 what would be the minimum useful TPI or MM per thread reasonably achievable?
#4 By the way I like your idea for the device
Never try to tell me it can't be done
When I have to paint I use http://kbs.justoldtrucks.com/
Thanks for the interest Floradawg and Frank S! Unfortunately, some of our "experts" on this forum are very good at criticizing, however, they haven't had any more projects since the 1940s. It is not the first time that they have done this with me and other collaborators in this forum! This thread is dead to me, feel free to remove your thanks!
"Only criticize a project if you have a better one to present!"
Last edited by machining 4 all; May 6, 2021 at 07:58 PM.
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