Some lathes are .1 and some are .125. Cutting threads is the same on each,
it is only when one counts five turns in the mind... One must calculate
and figure all of the time anyway.

It might have been metric !

Martin

Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


Bill Schwab wrote:
Wayne,

I think the 8 TPI screws are a non-issue on a lathe. I find I just
eyeball the cuts until I'm somewhat oversize, then with a digital caliper
zeroed on the size I want, measure how much more to remove. Thats
when the
dials are used. Of course one lathe has very poor dials with a 5 tpi
crosslide and an 8 tpi topslide, the other lathe is something like 60
thou
per revolution for both.

60 thou!!!! How big is the lathe? What kind of work was it designed
to do?


On a lathe, I don't think you will find that you need to make large
movements on the dials, just small ones. Hope this helps,

It does indeed. To be fair to myself, I am going to look around again,
as well as ask here if anyone knows of 10 tpi machine in the general
size of 12x36. It might be that such a beast does not exist. Failing
an obvious better deal, I expect to keep the machine. Certainly there
is nothing to gain by beating up on Enco and then buying the same
blasted thing from elsewhere.

Not that I will go this way, what does a DRO on a lathe instrument? Is
it just the carriage and cross travel?

Thanks!

Bill




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