Re: Making an ER40 Collet Chuck
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Jody? ?4140 is fine? if you are planing to take it to a heat treat place
GP
On Thursday, April 23, 2020, 5:00:20 PM EDT, Jody <jp4lsu@...> wrote:
GP, What about 12L14 or 4140??? They are good carbon steels, but I'm not sure if they would be hard enough. -Jody
A collet chuck needs to be made from tool steel not cast iron. The collet will dig in to the cast iron. Its a no no
GP
On Thursday, April 23, 2020, 4:16:05 PM EDT, Andrei < calciu1@...> wrote:
1 foot long piece of 4.25" cast iron is 106 bucks at mcmaster. yuo need this diameter to finish at 100mm for your chuck.
1144 is only available in 3" max diameter, so your options may be limited in using this.?
Cast iron is always a good (but messy) option. You can order a slice of various diameters from McMaster Carr. This is a company that never disappoints, until your check your bill
?. Their products are top notch, selections are wide and deep and they are delivered quickly. The prices match the quality of product and service. I have never hesitated buying from them.?
Best Regards,
Andrei D. Calciu
6371 Birch Leaf Court
Burke, VA 22015-3528 USA
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703-995-4822 (landline and Fax)
571-436-0169 (mobile)
mailto:calciu1@...
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Jody - Regarding your question about stainless for your project: I have not had much experience working with stainless, but what little I have had has all been bad. This may say more about my fairly limited machining experience than anything else, but
I found work hardening to be a real problem.
Take a look at this chart for some idea of how easy it is to machine various metals:
You might consider 1144 stressproof. You can look up various alloys on SpeedyMetals and get more information on typical uses.
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