--- In 7x12minilathe@...
<mailto:7x12minilathe@...> , "Mike Payson" <mike@...> wrote:
According to LittleMachineShop
(
<> ) as well as the
Homier website, the compound on their 7x has only 1.38" travel, vs.
2.165" for most of the others. Can anyone confirm whether that's
accurate or not? I'm assuming that it's an error on Homier's part,
but I'm hesitant to get one without confirming it.
Thanks!
Hi Mike,
That's a pretty rubbery parameter. It just depends how much dovetail &
gib engagement is adequate for what you're doing.
The fully advanced position of the compound is a hard stop with all 3
gib screws contributing to toolpost rigidity. As you crank the compound
back there is less and less dovetail engagement. My manual (pretty well
a stock Sieg C2) says "55mm (effective)". That's probably about right.
At that point you still have 2 of the 3 gib gib screws within the
dovetail. Rigidity degrades rapidly beyond that point. However, there's
no way one could specify travel to 3 decimals of an inch!
I think these lathes are natively metric with imperial specs and
leadscrew a concession to the US market. So you're asking whether the
spec should be 35mm or 55mm. That's a more probable typo and the latter
figure looks more like the hardware. Perhaps Homier made a typo and LMS
copied it or both fell victim to a Sieg typo. Either way, I can assure
you there's little degradation in rigidity between the 35mm and 55mm
points.
John
