Hi Ron,
I never when to machist school - my academics took a different path, but my learning was "hands-on."
Your description or reality is right-on if I can use the machists who worked at Zeiss as a model. Each had a private collection of tools, and it was expected that each would make what was needed, when it was needed and it had to be done correctly! As for the water - this is SOP!
Take care,
DBN
trainguy_347@... wrote:
---- Aaron Pasteris <aarons_groups@...> wrote:
The difference between inserts and a honed/polished HSS tool is night&day. Plus, how do you get a form tool as an insert?
Aaron
One of the best rules I learned at Machinist's School was , "Make the tool fit the work, not the other way around." When I worked for GE, one of my benchwork jobs was making dozens of conveyor belt roller shafts about 4 inches long, with two 1/16th inch grooves in them for external snap (retaining) rings. The tool I ground for myself worked great for this, and I guarded it fiercely! As any machinist's skills grow, he or she will find a need for specially shaped tools; it really is nothing to be afraid of, and can be quite satisfying to know that you are practicing your new-found skills exactly as generations of mechanics and machinists have for centuries. Where do you think the metal workers of a hundred years ago got their tooling? They made most of it. I'm happy we don't have to make everything we use, but it certainly is fun to know we can, if the need arises.
A quick word about off-hand grinding of lathe tools or drills: keep a small cup of water near the grinder, and quench both the tool and your fingers (of both hands) frequently. It is amazing how hot these little buggers can get!
Stay safe, and keep making chips! Ron Durbin.
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