I'm getting to know my 'new' Storebro lathe by making up some accessories that I find useful. A few times, I have been missing the carriage stop that I have on the Hercus lathe. I corrected that deficiency today. This design includes both a hard stop and a dial indicator to give advanced notice that the stop is coming up. With a bit of practice, you can drop out of power feed with about 5 thou left to turn by hand.
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I have it adjusted to zero out on the hard stop after 1/2" of contact. I'll replace the hex-head bolt when I can get a 2" SHCS.
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Nice job Mike - you may want to get one of the handles that Ed used when he made his
carriage stop.
I cannot recall the name of them but I will be using one when I try my second attempt at a carriage lock for my lathe.
The hard stop looks a lot like a tap, if it is, is there any reason to use a tap?
(12-15-2013, 06:31 AM)Mayhem Wrote: [ -> ]Nice job Mike - you may want to get one of the handles that Ed used when he made his carriage stop.
I cannot recall the name of them but I will be using one when I try my second attempt at a carriage lock for my lathe.
They're called adjustable handles. Here's some examples.
http://www.reidsupply.com/products/knobs...e-handles/
Reid Supply does ship to Canada if you can't find them locally.
Oh, and nice job on the carriage stop. It's a handy accessory to have.
Ed
Mike,
Be careful power feeding to a hard stop. If you overshoot, you won't be able to disengage the feed (don't ask how I know). On some lathes can be a real pain to replace a shear pin.
Tom
(12-15-2013, 11:08 AM)TomG Wrote: [ -> ]Mike,
Be careful power feeding to a hard stop. If you overshoot, you won't be able to disengage the feed (don't ask how I know). On some lathes can be a real pain to replace a shear pin.
Tom
And on lathes without a shear pin, like my lathe, I'm sure it's even a bigger pain to replace a gear or gears. And more expensive.
Ed
That's why I love my Colchester Master 2500. It has an auto knock off against a stop, and you can adjust the force required by twisting the feed lever. I tend to leave a bed clamp firmly fixed just short of the chuck in case I drift off at any time while turning
Andrew
Andrew,
My Hardinge has an auto stop on the leadscrew. It will repeatedly stop with in couple of thousandths, which is great for threading to a shoulder. The feed has a friction clutch which will slip if it hits a hard stop.
Tom
That's why I use the dial indicator along with the hard stop. I get plenty of warning that the end is near. If I wanted to, i could set the dial for a full inch of warning. On the Hercus, the clutch will slip if it is allowed to hit the hard stop. I haven't tested the new machine. Half-nuts, of course, are a different story.
Hmmm. still no word on the use of a tap as a hard stop???