Hi.
If someone plays with a hobby lathe, please let me know if I can have a small piece made to link two rotating items. No machinists nearby my town.
At once, will tell what I need:
One 25 mm long shaft.
Half of its length 5.0 mm diameter.
The other half 7.0 mm diameter.
In any steel.
I have a Micro Lathe see below image. As has already been said, you need to provide tolerances. Also, must it be steel? Aluminum is much easier to work with. I can probably do what you want for free, just cover shipping, however I would like to see due diligence on your part, ie. create a drawing.
I have a Micro Lathe see below image. As has already been said, you need to provide tolerances. Also, must it be steel? Aluminum is much easier to work with. I can probably do what you want for free, just cover shipping, however I would like to see due diligence on your part, ie. create a drawing.
He's also got the same request over on AAC as well.
As with you I'd knock it out for free being its such a simple part and it's easily doable just as a lathe tolerances test and tune procedure when setting up for a larger job.
Someone else over there however feels it worth $100 (with a 50% off discount to other forum members of course).
I just picked up a antique Burke #4 horizontal mill (late 30 to mid 40's vintage) last week I am fixing up to set up as a dedicated keyway and slot cutting machine so if he needs a keyway cut in it I could do that too!
Well, probably not actually being I don't think I have a slot cutter that small.
Grateful to your overwhelming response, gentlemen.
Tolerance +/- 0.1 mm to diameters, +/- 1mm to length.
If any steel is too vague, whatever ironish piece of remnants or stainless will do very well, but not from a broken drillbit shank. Will have little torque and nothing important. Not keyed.
Mailing and labor covered; and if you want some free electronic parts on top, make a wish list; I may be lucky and have it.
Understand the convenience of a drawing (I would ask the same), but perhaps a picture of a similar piece works:
Grateful to your overwhelming response, gentlemen.
Tolerance +/- 0.1 mm to diameters, +/- 1mm to length.
If any steel is too vague, whatever ironish piece of remnants or stainless will do very well, but not from a broken drillbit shank. Will have little torque and nothing important. Not keyed.
Mailing and labor covered; and if you want some free electronic parts on top, make a wish list; I may be lucky and have it.
Understand the convenience of a drawing (I would ask the same), but perhaps a picture of a similar piece works:
I think any of us with a lathe could knock out one, or several, for you in short order given your dimensions and tolerances. +-.1 mm tolerances is pretty easy to hit.
The other week I had to replace the nozzle holder for my used oil burner and given that buying one cost around $20 with shipping now I decided to make my own from a piece of brass hex stock I had that was the same base dimension as the store bought ones.
Once I was set up (took about 20 minutes since my brother used it for making something else entirely different earlier) I could knock one out start to finish to +- .002 tolerances including boring and threading the inside in under 5 minutes each. I only needed one but once I was set up and going it made more sense to make half a dozen now rather than mess with having to set up again some day later if I ever needed another one.
That's one of the annoyances I have with doing basic lathe work. Setup to make something simple often takes more time and effort than making one of even a bunch of something does once everything isset up and going.
I miss the shop I had access to. I would actually expect something like +0.00 mm -0.1 mm so it fits assuming a set screw. I'll bet your length could even be sloppier. Your the boss though. Little things like a chamferred edge like you'd get with a file would make the part want to "find the hole". in any part I made I really never specified the finish.
You could check for fun, Stock Drive Products for shaft reducers. So for like a 1/4 to 1/8 reducer, "they" bore a 1/4 shaft to 1/8 and lop off 1/4 of it so the set screw sees the 1/8 shaft. Precision shafting has high tolerances so it's straight and has a sliding fit through the hole. This is where 0.001 inch over/under reamers come into play when your making gears and bearings.