Re: Making an ER40 Collet Chuck
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Dave? If you want to make some thing don't let the cost of material bother you?
GP
On Friday, April 24, 2020, 9:37:55 PM EDT, Dave Matticks <dpm100@...> wrote:
On a part like that considering the amount of work and physical size I'd take it to the local heat treating place. Probably around $30.00 If it's a regular process. O1 and A2 are a daily thing and reflected in the price.? You can get low carbon steel carburized for a lot more $ than something meant to be directly hardened.? 4140 prehard is a great candidate for gas nitriding. Expensive minimum charge though.? Dave?
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-------- Original message -------- From: Guenther Paul <paulguenter@...> Date: 4/24/20 19:52 (GMT-06:00) Subject: Re: [atlas-craftsman IO] Making an ER40 Collet Chuck
No hardening is not necessary, That is if you want to make a new collet chuck in a short time of use. My comment do you job right or don't do it at all.?
GP
On Friday, April 24, 2020, 7:56:00 PM EDT, kaje7777 <kevin.quiggle@...> wrote:
There seems to be an assumption here that hardening is a requirement for the project. I'd like to play devil's advocate here and ask - Is hardening really necessary? Desirable sure, but necessary??? If this was a tool that was going to get constant daily use in a commercial machine shop I would say definitely yes. But in the home shop where tools get relatively minor use, I think we can get away with not hardening.
I'm just an amateur home shop machinist with not all that many machining hours clocked yet, so I may well be off base on this. What do you more experienced hands have to say about this?
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