I have not built one for my atlas, as I pretty much use it for a second operation machine. ?My primary lathe will take 2 inches through the spindle. ?I built a spider for it out of thick wall mechanical tubing. ?I also built a spider chuck. ?I used brass tipped screws from grizzly. ?Still good to use a shim on a finished barrel though.
They also make spiders?
Charles
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On Feb 3, 2019, at 10:30 PM, Robert Downs via Groups.Io <
wa5cab@...> wrote:
It just occurred to me that a fairly obvious and available ready-made choice would be an adaptor from the thread on the left end of the spindle to 1-1/2¡±-8 would allow one to use a Jacobs 59B Headstock Chuck.? They open up to a hair over 3/4¡±, which is the limit for through the spindle.
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Robert Downs
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I would like an iris instead of the set screws.
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On Sun, Feb 3, 2019 at 5:44 PM Jody <jp4lsu@...> wrote:
No worries Dave, I've been getting them.
I think I do like the idea of the set sews on the spider bolts any sort of jam nut.
-------- Original message --------
From: Dave Matticks <dpm100@...>
Date: 2/3/19 2:36 PM (GMT-06:00)
To: [email protected]
Subject: Re: [atlas-craftsman IO] Making Spide
Sorry for the multiple replies! Got some slow....... internet today!
Dave
On February 3, 2019 at 2:19 PM dpm100@... wrote:
Hi Guys,
For whatever reason I couldn't reply to Bill's post regarding spider plans. Permanent Error!
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Anyway, I just looked at it. Looks like the same idea as my concept sketch.
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I would not use soft tip adjusting screws on anything polished, blued, plated or otherwise finished.They will slightly mar the material due to the rotating action. Think about turning the steering wheel at a dead stop, plenty of abrading and embedding going on.
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You need something stationary to separate the screws from the work, wrap a piece of brass shim stock, maybe .010" thick around it. Only pressure instead of rotating. Could do the same with the chuck jaws but I prefer a piece of paper folded in half, torn to around the circumference of the part and wrapped around. Cheap, easy and very effective.
I can't stand any kind of marks on something that's supposed to look like new, no scratches either.
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Not a fan of the jam nuts. Once adjusted, tightening the nuts will loosen the screws a little.
?Just my thoughts,
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Dave
On February 3, 2019 at 9:41 AM Dave Matticks <dpm100@...> wrote:
Never made one for the Atlas but I might.?
Replace the threaded collar/nut on left end of the spindle with something like this.?
First thing that popped into my head.?
Sent from my T-Mobile 4G LTE Device
-------- Original message --------
Date: 2/3/19 08:37 (GMT-06:00)
Subject: [atlas-craftsman IO] Making Spide
[Edited Message Follows]
Topic should be Making Spider.
Eventually I'd like to be able to do a little barrel work and have been checking out various methods of indicating off the bore.
I was curious if anybody made a spider for the back end of the spindle.? Of course this cold be used to keep any stock steady.
Thanks,
Jody (DFW)
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