On May 7, 9:27 pm, "DoN. Nichols" wrote:
On 2010-05-07, Searcher7 wrote:
On Apr 26, 11:39 pm, "DoN. Nichols" wrote:
On 2010-04-25, Searcher7 wrote:
I have a mini-lathe, but even for those with the larger machines I was
looking for opinions on whether or not the "Adjust Tru" feature on
something like the Bison is really worth the money.
[ ... ]
I need to turn a variety diameters. But may also be getting into a
project involving "piston and bore" accuracy.
BTW. I wondering if one of these eBay chucks can be adapted to my
lathe: A) 320527041801 B) 350349970482
Could you bother saying what the size of the lathe is?
"Mini-Lathe" does not devine it for me.
Sorry. I have a red 7" x 14" Microlux. The newer one is exactly the
same, but gray. (That's "grey" in the U.K.). :-)
http://www.micromark.com/MICROLUX-7X...ATHE,8176.html
Anyway -- the first one is 4" diameter, and a 3-jaw chuck
normally should not be much larger than 1/2 the swing of the lathe. At
a guess, your "mini-lathe" could be one of the 7x10" lathes, which would
put a maximum 3-jaw chuck size of 3-1/2". (4-jaw chucks can be, and
often are, larger.) This chuck is for at least an 8" swing lathe.
Anyway -- as supplied, with a #10 B&S taper, it is not likely to
fit anything which qualifies as a "mini" lathe, though replacing the
taper with a different chuck backplate could cure this.
Both auctions are closed, so it does not matter anyway.
The seller may put them back up, but obviously money is better spent
on something more useful for my machine. Thanks.
Speaking of collet chucks. I can't seem to find much info on the one I
have shown at the top of this page:
http://s290.photobucket.com/albums/l...slander/Tools/
I have to figure out how to use it and if I'm missing any parts.(It
came in the same box which was supposed to contain the 5C collect
chuck).
I think that this is intended to be held in a larger chuck (or a
in a *very* large collet) to do a makeshift adaptation to 5C collets. I
can't see clearly whether the black end has a proper taper for closing a
5C collet or not. The other end certainly does not.
If the black end has the taper for a 5C collet, you thread the
collet into the separate ring (which I presume has threads on the ID to
match a 5C collet) chuck the silver part in the chuck or very large
collet, and use the tommy bar to rotate the black part to close the
collet.
I added three clearer pics of it taken apart:
http://s290.photobucket.com/albums/l...slander/Tools/
I can see some sort of taper inside the opening at the non-threaded
end of the black part that starts at about 1-7/16" in diameter. It
tapers down for about a 1/2" before the I.D. straightens out the rest
of the way at about 1-1/4" diameter).
Also,a s you can see there are eight threaded holes that are about
7/16" deep, on the outside circumference of the black part.
The I.D. of the small ring is threaded. (The two bars don't seem to
serve a purpose).
It is sort of like the square and hex collet blocks for use
with a milling machine. To see examples of these, see eBay auction:
400116973584
Yes, I have both. The square and hex.
Anyway -- I don't see what you have illustrated as being any use in a
lathe which qualifies as "mini". :-)
I also have a full set of 5C collets at every 1/32nd for when I was
thinking of milling larger diameter stock than 3C would allow. But
since I now have a mini mill/drill project that I plan to fix I
probably won't need all the MT3 stuff. (Like the endmill holders). Now
I'll need R8 tooling.
http://www.harborfreight.com/two-spe...ine-44991.html
Good luck,
DoN.
--
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. |http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---
Thanks again.
Darren Harris
Staten Island, New York.