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I am looking at a lathe that is set up to metric scale - the dials
are all in metric gradations and so are the threads. How much of a
problem is using such a machine if turning to Imperial measure?

I want to make working model steam and internal combustion engines
from castine kits and bar stock, and assume many of the kits are
from overseas sources and come with metric drawings anyway...

It is a nice machine otherwise and a good value...

Thanks,

Paul

With the exception of the Micromart lathes and the leadscrews on the US
model 7xX they all have metric cross slide and compound screws, so no big
problem there. You have to cut to size anyway so if you have inch
measuring tools you are ok, or bring your calculator. If the graduations on
the lathe are 40 per turn or 0.025mm per division, that is just a hair under
0.001" by 0.0004 mm. per division.


Bob

The graduations aren't much of a problem, threading in the system
other than the leadscrew is cut to can be a nuisance. To cut
Imperial threads, you may need different change gears than the lathe
comes with and the thread indicator probably won't work properly.
They're not insurmountable problems, more a convenience issue.

Roy

One other thing, if a lot of inch threading is required, pick up an inch
leadscrew conversion kit from
along with a set of inch changegears. Solves any almost fits threading
problems.

Bob

--- In 7x12minilathe@..., "pkklathe" <pkk@o...> wrote:

I am looking at a lathe that is set up to metric scale - the dials
are all in metric gradations and so are the threads. How much of a
problem is using such a machine if turning to Imperial measure?

I want to make working model steam and internal combustion engines
from castine kits and bar stock, and assume many of the kits are
from overseas sources and come with metric drawings anyway...

It is a nice machine otherwise and a good value...

Thanks,

Paul

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Thanks Bob. If I read you right if I bought an Asian 7x12 or 9x20
I'd have these same issues, right?

Thanks a bunch.

Paul





--- In 7x12minilathe@..., Bob Sunley <rosunley@s...>
wrote:

With the exception of the Micromart lathes and the leadscrews on

the US

model 7xX they all have metric cross slide and compound screws, so

no big

problem there. You have to cut to size anyway so if you have inch
measuring tools you are ok, or bring your calculator. If the

graduations on

the lathe are 40 per turn or 0.025mm per division, that is just a

hair under

0.001" by 0.0004 mm. per division.


Bob

On 11 Mar 2003, at 11:49, pkklathe wrote:

I am looking at a lathe that is set up to metric scale - the

dials

are all in metric gradations and so are the threads. How much

of a

problem is using such a machine if turning to Imperial measure?

I want to make working model steam and internal combustion

engines

from castine kits and bar stock, and assume many of the kits are
from overseas sources and come with metric drawings anyway...

It is a nice machine otherwise and a good value...

Thanks,

Paul





To unsubscribe from this group, send an email to:
7x12minilathe-unsubscribe@...



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