gdgambler
Hot Rolled
- Joined
- Oct 1, 2006
- Location
- K. Falls, Oregon
How thin can I safely machine the wall thickness on a steel or brass sleeve before it is not practical or can't be machined any thinner?
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Machining a very thin sleeve
- Thread starter gdgambler
- Start date
- Replies 48
- Views 9,253
scadvice
Titanium
- Joined
- Jan 16, 2009
- Location
- "Stuck in Lodi", Ca
In what ID and OD range and length?
Jorgo
Hot Rolled
- Joined
- May 11, 2008
- Location
- Sechelt BC
Once it disappears it can't be machined any thinner.
It's way to general of a question. How are you holding it? Are you chucking on the sleeve or a carrier? If on the sleeve them the wall needs be thick enough to support the pressure of the chuck. If you have a carrier then comes down to technique. Watch videos on Swiss turning and duplicate their techniques. Use your stock to support your finish cut. Could put the sleeve on a mandrel to turn the od.
Jordy
It's way to general of a question. How are you holding it? Are you chucking on the sleeve or a carrier? If on the sleeve them the wall needs be thick enough to support the pressure of the chuck. If you have a carrier then comes down to technique. Watch videos on Swiss turning and duplicate their techniques. Use your stock to support your finish cut. Could put the sleeve on a mandrel to turn the od.
Jordy
gdgambler
Hot Rolled
- Joined
- Oct 1, 2006
- Location
- K. Falls, Oregon
Roughly an inch long by .204 OD by .202ID
gdgambler
Hot Rolled
- Joined
- Oct 1, 2006
- Location
- K. Falls, Oregon
5C collet lathes
gdgambler
Hot Rolled
- Joined
- Oct 1, 2006
- Location
- K. Falls, Oregon
Its a stupid question but I am just curious. Thank you for your patience and input.
lionelt
Stainless
- Joined
- Nov 25, 2010
- Location
- Oxfordshire
You want to machine a sleeve to a .001" wall thickness?
I've rolled a .001" piece of shim stock to shim a bore but don't know how you would machine it as a solid bush
Jorgo
Hot Rolled
- Joined
- May 11, 2008
- Location
- Sechelt BC
BridgeportinD2
Hot Rolled
- Joined
- Feb 28, 2012
- Location
- Iowa, USA
Anneal, draw, repeat many times, then trim? That's pretty damned thin. Would be a bitch in my view, no matter how you slice it.
Maybe JRIowa, Smalltime, or some of the other die makers could weigh in. That's out of my league whether machining it or getting a die fussed in to make that.
Maybe JRIowa, Smalltime, or some of the other die makers could weigh in. That's out of my league whether machining it or getting a die fussed in to make that.
Jorgo
Hot Rolled
- Joined
- May 11, 2008
- Location
- Sechelt BC
You might have a chance with a perfectly fitted mandrel and a perfectly razor sharp tool with light cuts. But I doubt it.
Jordy
Jordy
scadvice
Titanium
- Joined
- Jan 16, 2009
- Location
- "Stuck in Lodi", Ca
It's all about how thin you can cut/feed. The rule I use is 30% feed of the wall thickness max. However I believe .005 wall is the thinnest I recall doing. I doubt .001 can be done.
Ukraine Train
Cast Iron
- Joined
- Feb 10, 2014
- Location
- Ohio
Turn ID then mount on a mandrel and grind OD?
bryan_machine
Diamond
- Joined
- Jun 16, 2006
- Location
- Near Seattle
Wire EDM?
(Some more words to make the software happy.)
(Some more words to make the software happy.)
Is this a print to part-part, or is this just a fix-it job? The options open up a lot if you just need to fix it, but if it's on a print???? I don't think it can be done with conventional machining, maybe ask one of the expert 3-D printer guys. I would think even if you tried burning it the wire would just burn through the wall, especially when it's getting towards the end of the path, the smallest wire I know of is still .004" thick. On top of all that, it would have to be an absolutely finished part when it came out of the machine, no handwork on that little sucker, ever handled .001" shim stock? Let alone lapping it?
Robert my ±2
Robert my ±2
But to answer this question, you're right there Klamath. But be sure to post back and let us know how, what happened.
R
NAST555
Stainless
- Joined
- May 23, 2008
- Location
- Gauteng, South Africa
Wait... What??
I can see what the others were saying about a mandrel but I still cannot see it being successful. I sure as hell wouldn't want it take on. Maybe drawn from a die but there I am no expert,I am not even sure if it is possible then.
thermite
Diamond
- Joined
- Sep 21, 2011
One-thou wall?
S'pose one could just electroform it.
Biggest problem may not be making it.
How d'you plan to HANDLE it without distortion or damage?
One sneeze, and yer plucked...
machtool
Diamond
- Joined
- Jun 22, 2004
- Location
- Melbourne Australia
Post #7. Pretty sure this is just a hypothetical question. Now I've fallen into the trap of wasting time on it.
When I want to make a one thou per side thick sleeve. I just take a mandrel, run it about 16,000 rpm, and rub it with a scrap of 4140 from the off cut bin. Instant 2 thou over size bush. My only problem is, I've never been able to get one off the mandrel. Lube doesn't help, that just makes undersize sleeves.
Regards Phil.
