Re: Difficulty Using a Parting Tool on my 7 x 12
Al,
I like your idea of turning the lathe manually. I have been wanting
to make a crank arrangement for threading manually, but had not
thought of using the same method for parting
By
Craig C. Hopewell <[email protected]> <chopewel@...>
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#287
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Re: Difficulty Using a Parting Tool on my 7 x 12
Sometimes, though, a nice finish cut is needed and the work has no
place to clamp in the chuck for a finish facing cut, or may be marred
by the chuck (although brass shims may be used in this
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Craig C. Hopewell <[email protected]> <chopewel@...>
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#286
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Re: Difficulty Using a Parting Tool on my 7 x 12
I have experienced all the problems with parting and, as one member said,even
turned the chuck by hand. With my 7X14 the circuit breaker trips as soon as
the tool hogs. I'm attempting to make a
By
franksjoy@...
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#289
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Re: mini lathes
The product reviews at:
http://www.mini-lathe.com/Default.htm
are accurate and honest. The Asian minis can meet your accuracy
needs; they may need some tweaking - the basic pieces are decent,
By
Roy
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#285
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Re: Spindle Plate Land
True enough. I use the 4-jaw when I need absolute
concentricity on an existing workpiece. Not to put
down Rick's idea - I think it's great and will
probably make one someday.
Frank
By
Frank Hoose
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#284
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Re: Difficulty Using a Parting Tool on my 7 x 12
There's also a lot to be said for hacksaw parting, followed by a
facing cut :-)
Roy
By
Roy
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#283
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Re: Difficulty Using a Parting Tool on my 7 x 12
Parting problems are a recurring issue; you've happened to hit a
temporary lull :-)
Make sure the tool is truly vertical - my HF holder needed some
shimming to properly hold a "T" blade. It
By
Roy
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#282
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Re: Difficulty Using a Parting Tool on my 7 x 12
I tend to use the cutoff tool only for stock 1/2" dia.
or less. For bigger stuff, I use the bandsaw.
Frank Hoose
http://www.mini-lathe.com
--- "Craig C.
By
Frank Hoose
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#281
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Re: Spindle Plate Land
I think it's an arbitrary amount. If you make too much adjustment
range, there's no particular downside; if you make too little
adjustment range, it's easy to increase. At some point, the
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Roy
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#280
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Re: Difficulty Using a Parting Tool on my 7 x 12
I have the HF QCTP and have had the same problem. As others have
stated slow speed is an answer. I have even turned off the lathe and
turned the chuck by hand while feeding the cross slide, it
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fromday2 <[email protected]> <aldayis@...>
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#278
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Re: mini lathes
By
rjs <rjs@...>
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#279
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Re: Spindle Plate Land
I have not made the adjustable back plate so I cannot speak from
experience but I would guess you are right. It would seem that .010
would be enough adjustment for a chuck that does not have other
By
fromday2 <[email protected]> <aldayis@...>
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#277
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mini lathes
Craig:
I guess my biggest problem is not having hands on experience with the
new mini lathes. I do not mind paying the price for a sd400 Prazi if
it is that much better than the others. Maybe the
By
russlbowen1958 <[email protected]> <moldproducts@...>
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#276
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Difficulty Using a Parting Tool on my 7 x 12
How far from the chuck are you attempting to part off? You should be
working as close to the chuck as possible (like less than one diameter.)
One concern I have about those quick change tool posts
By
rjs <rjs@...>
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#275
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Re: Difficulty Using a Parting Tool on my 7 x 12
I've had similar problems. First make sure the "T" type parting tool
is absolutely perpendicular to the work because that type tool has no
side relief. Try lowering the tool a few thousandths
By
Craig C. Hopewell <[email protected]> <chopewel@...>
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#274
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Re: Difficulty Using a Parting Tool on my 7 x 12
WD
How big a diameter are you trying to part off? A lot of people
have difficulties with this. It gets dicey on my 7x12 on anything
more than 1-1/8" in diameter. I seem to get the best results
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bbftx <[email protected]> <bflint@...>
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#273
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Re: Spindle Plate Land
Roy and Al:
I'm making an adjustable backplate too. One thing I question
in Rick's otherwise great design is the amount of adjustment
he built in. .050" oversize on the diameter seems like too much
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bbftx <[email protected]> <bflint@...>
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#271
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Difficulty Using a Parting Tool on my 7 x 12
I recently purchased a 7 x 12 mini lathe, and so far it has been
wonderful, I am very satisfied. I purchased a quick change tool
holder from HF, and with a modification to the compound, now have
By
wdannhardt <[email protected]> <wdannhardt@...>
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#272
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Re: Spindle Plate Land
Thanks to all who replied to my query. As suggested, I looked at
Rick's design for an adjustable backplate and realized that part of
his solution is a deliberate mis-match between the sizes of the
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John <[email protected]> <moran03@...>
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#270
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Re: mini lathes
I went through all of this. It would be nice to see and handle the
various machines as can be done with woodworking equipment, but
woodworking is the province of the yuppie and is available
By
Craig C. Hopewell <[email protected]> <chopewel@...>
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#269
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