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Bill, I agree 110%! Some times you just have to work with whats available. When I made mine I just happened to come across a slug of 8620 that was free. I did not harden it, and has performed

Where is Jody going to get a forge and how will he keep it at 1000+ degrees for several hours? Typos are courtesy of autocorrect. ________________________________ Sent: Thursday, April 23, 2020

Once the collet chuck is finished machined it must be hardened that also includes 4140?? GP

If you use "tool steel" and don't harden it that might even set you back!When you buy a slug of O1,? A2, whatever it's not even near ready!Bare, marginal minimum in my opinion would be 4140

Or you can put it in a metal box or can packed with carbon, scraps of leather or horn, or a few other things, seal it, and put it in a forge and keep it red-hot for several hours. Then dump and

As long as it's really true in the end.Dave?Sent from my T-Mobile 4G LTE Device

1018 can be hardened by carburizing. It takes hours at high temperatures, it takes a special furnace where they pump carbon monoxide and sulphur and other stuff. Definitely not something you can do at

Glenn sticking 1018 in water will not harden its a waist of time GP

For hobby use, as hard as you can get it...When you are almost done with the taper, heat it to 1500F* and quench in water. Then grind the finish taper. First thing you should do IMO is make an 1 1/2 8

I send a drawing for you GP

JodyThe only thing you can have done to 1018 is case harden it. Case hardening will do for a while. The hardness is about 0.010 - 0.15 deep depends on who does it. You have to take it to a hardening

1018 is mild steel. It won't heat-treat, though you can case-harden it. It's ok to machine, HSS ground for steel and honed sharp will get you a decent finish. It won't last as long as 4140, it won't

So I went by the metal store by the house and picked up a 3" 1018 round bar drop off for a few bucks.? Very little round bar to choose from so I grabbed a piece of what they had since its only a few

Thanks GP,?Yes I bought the nut already.? That is the drawing I have from either you or Steve Haskill.-JodySent via the Samsung Galaxy S10+, an AT&T 5G Evolution capable smartphone

Jody, 12L14 is leaded, and can't be hardened. More or less. You can case harden it, but the metal under the case will remain relatively soft. Where using it is a benefit is in ease of machining. If

I agree.? The benefit of the set-tru feature is that it allows one to easily correct for inaccuracies introduced by the collet nut and also the collets themselves.? My set of 5C's vary +/- 0.0004",

Jody? ?4140 is fine? if you are planing to take it to a heat treat place GP

This is for the collet chuck maker. I would buy the front nut. GP

A collet chuck needs a hardened surface where the collet"s contact the taper of the chuck. You can use a oil hardening steel or water hardening. Make sure you do it properly and watch the colors of

GP, What about 12L14 or 4140? They are good carbon steels, but I'm not sure if they would be hard enough. -Jody