• We want to encourage those of you who ENJOY our site and find it USEFUL to DONATE and UPGRADE your membership from active member to donating or premium membership. If you want to know the differences in membership benefits, please visit THIS PAGE:

    https://www.hobby-machinist.com/premium/

    Donating memberships start at just $10 per year. These memberships are in fact donations that help pay our costs, and keep our site running!
    Thank you for your donation, God Bless You

  • I apologize to anyone who is disappointed with their experience on The Hobby-Machinist.

    Anyone who made a donation within the last year who would like a refund, please PM me and I will refund your money.

    Again, my apologies.

    Nelson

[4]

Lathe chuck in fire

[3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

GL

Registered
Registered
Joined
Aug 13, 2017
Messages
27
Likes
23
#1
I have a 4 jaw chuck that was on a lathe in a burning shop. The fire department helped with heat treating by quenching the whole thing. Apparently, the bed fell apart as they tried to pull it from the charred pile. The chuck is intact, a bit rusty
, but in one piece so far. I've seen "flame hardened ways", I'm thinking this is different. I'm also thinking if I put any stress on it it will fall apart also. Can you anneal cast iron? How hot do you go and for how long? I have a kiln I can use as an oven and slow cool down. I know some about steel heat treating, cast not so much.
 

TomS

Active User
H-M Supporter - Gold Member ($25)
Joined
May 20, 2013
Messages
1,727
Likes
680
#2
Just my 2 cents but I wouldn't want to be standing next to that chuck while spinning on a lathe. I'm no metallurgist but not knowing the integrity of that chuck scares me.
 

Cadillac

Registered
Registered
Joined
Mar 12, 2018
Messages
243
Likes
271
#3
Yeah that chuck would be used for a rotary table or dividing head or such.
 

GL

Registered
Registered
Joined
Aug 13, 2017
Messages
27
Likes
23
#4
I was thinking rotary table for a friend, but I actually like the guy so wondered if was even salvageable. I guess if I can tighten it down on something and it doesn't blow up, it would be good enough for that. I agree, spooling it up on a lathe sounds like a bad idea. The only saving Grace would be that if the metal moved during the "quench" it is a four jaw, except for that parallelism thing. I actually suspect it isn't worth the effort and the scrap bin would keep it off of a lathe of someone down the line who has no idea they really have a bomb.
 
[6]
[5] [7]
Top