[4]

Material for tool holders.

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

Brento

Active Member
Registered
Joined
May 9, 2018
Messages
132
Likes
53
#1
Due to my clausing mill have a mt2 spindle, which type of steel should i use make a mt2 solid holder out of? I am also looking to make a ER20 collet for my SB 9A as well. Should i harden the solid holder as well?
 

pacifica

RGL
H-M Supporter - Gold Member ($25)
Joined
Jan 2, 2018
Messages
172
Likes
86
#2
Ease of machining and availability would be: steels: 1215, 12L14, 11L17 and 1144(stressproof), SS:303, . for hardening:O-1.
There are many other choices but may be hard to find and expensive.
If you get into hardening you have to worry about distortion after the hardening process.
 

Brento

Active Member
Registered
Joined
May 9, 2018
Messages
132
Likes
53
#3
I have no means to harden with oil anyways. Can you harden a material in a home owners oven?
 

pacifica

RGL
H-M Supporter - Gold Member ($25)
Joined
Jan 2, 2018
Messages
172
Likes
86
#4
need to get O-1 to 1500
I have no means to harden with oil anyways. Can you harden a material in a home owners oven?[/QUOTE
To harden O-1 tool steel you need to get to 1500 degreees F.
 

T Bredehoft

Active User
H-M Supporter - Gold Member ($25)
Joined
Dec 27, 2014
Messages
2,722
Likes
2,096
#5
Obtain some 4140 half hard or annealed. It's hard enough to take a beating, but not too hard to machine with HSS tooling. It would be ideal for your tooling purposes.
 

Brento

Active Member
Registered
Joined
May 9, 2018
Messages
132
Likes
53
#6
Obtain some 4140 half hard or annealed. It's hard enough to take a beating, but not too hard to machine with HSS tooling. It would be ideal for your tooling purposes.
If i cant find annealed i can anneal it myself then case harden it correct?
 

T Bredehoft

Active User
H-M Supporter - Gold Member ($25)
Joined
Dec 27, 2014
Messages
2,722
Likes
2,096
#7
If i cant find annealed i can anneal it myself then case harden it correct?
It's not that easy. You ought to be able to find it annealed. 4140 is not like carbon steel, it needs to soak (be held at temp) for specific times (possibly hours) for each operation, and case hardening needs the same temps as any other hardening. I bought some 4140 flame cut drops, they were diamond hard (so to speak) I couldn't hack saw them. I built a charcoal fire in my grill, put the two pieces (3/4 by 3/4 by 12 ") in and let it burn out. cooled overnight. I could then cut it with high speed steel but it wore the cutter pretty quickly. Once it's annealed (Half Hard) its still RC 30 or so.
 

Brento

Active Member
Registered
Joined
May 9, 2018
Messages
132
Likes
53
#8
Ok so definetely need to make sure it is annealed then. I have some carbide tooling that will be going on the lathe so im sure ill have enough power then to go through it decently.
 

dulltool17

Active User
Registered
Joined
May 9, 2014
Messages
319
Likes
211
#9
4140 Annealed machines like a dream and is tough enough to withstand most normal use.
My go-to steel.
 

Brento

Active Member
Registered
Joined
May 9, 2018
Messages
132
Likes
53
#10
4140 Annealed machines like a dream and is tough enough to withstand most normal use.
My go-to steel.
So you dont think i will have any problems with cutting it on my lathe?
 

dulltool17

Active User
Registered
Joined
May 9, 2014
Messages
319
Likes
211
#11
Good, sharp HHS tools are all you need.
My lathe is a combo Grizz with only 3/4 Hp and it cuts rifle barrels, etc with little effort. I don't go crazy with feed or depth-of-cut.
4140 actually is easier to machine than 1018, in my experience.

Here's a coincidence- look at the date you joined here. then look at my date.....
 

Brento

Active Member
Registered
Joined
May 9, 2018
Messages
132
Likes
53
#12
It would be a great coincidence but i had another account and got locked out due to forgetting my password lol.
 

MrWhoopee

H-M Supporter - Silver Member
H-M Supporter - Silver Member ($10)
Joined
Jan 20, 2018
Messages
530
Likes
347
#13

Brento

Active Member
Registered
Joined
May 9, 2018
Messages
132
Likes
53
#14
Ill keep an eye out for that but with it sounding like a special material i may stick with original 4140
 

T Bredehoft

Active User
H-M Supporter - Gold Member ($25)
Joined
Dec 27, 2014
Messages
2,722
Likes
2,096
#15
My first job with my last employer was making ETD 150 into piston rods, form turn each end then thread them. One thread about 1 1/2 long the other about 4. I musta made hundreds, from 3/4 diameter up to about 2". They wanted to see if I could chase threads. I showed 'em.
 
[6]
[5] [7]
Top