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View Full Version : A simple carriage stop for my lathe



brian Rupnow
07-21-2008, 08:41 PM
Many (most) of the things I go to make on my lathe are machined within about 2" of the chuck. I have this terrible fear that one day I'm going to have an "old timers moment" and run the compound rest right into that whirling chuck (flashback to high school metal shop circa 1962). I hang out a lot on another forum, Home Model Engine Machinist, and a gentleman over there posted an excellent carriage stop design, and I blatantly copied it.:p :p
This is simple to make---I used 5/8" aluminum. It clamps to the lathe as shown, and actually has a dual function---without the dial indicator, its a carriage stop. With the dial indicator, it becomes a very accurate indicator of carriage travel. It took me about 2 hours to make, and I think that it was time well spent. I know the danger associated with running the carriage into it under power, but I never use power feed when I'm working in close to the chuck anyways.(and yes, it does clear the lead screw by about 3/16"--the camera angle is funky, and makes it appear to be touching the lead screw---its not!!!)---Brian
http://i307.photobucket.com/albums/nn294/BrianRupnow/carriagestop004Medium.jpg
http://i307.photobucket.com/albums/nn294/BrianRupnow/carriagestop001Medium.jpg

miker
07-22-2008, 03:33 AM
Brian, thanks for the very clear pictures.
That is next on my list.

Rgds

R W
07-22-2008, 04:35 AM
A neat job and great photos.

Evan
07-22-2008, 04:59 AM
I have this terrible fear that one day I'm going to have an "old timers moment" and run the compound rest right into that whirling chuck

I always stop turning the handwheel the moment I hear the tick-tick-tick sound...

radish1us
07-22-2008, 05:14 AM
So, you decided NOT to undo the headstock screws and fit that simple one you spent sooo long designing and drawing, eh.

Instead you copied the one Bogstandard posted.

I just so happen to belong to both groups as well.

Now see if this thread gets locked, eh.

radish1us
07-22-2008, 05:17 AM
I always stop turning the handwheel the moment I hear the tick-tick-tick sound...

Evan, where's you sense of adventure, at least wait till the sparks are makin' things look pretty, ah, pretty sparkle's, better stop now.

Doc Nickel
07-22-2008, 05:28 AM
I've never run the carriage into a (spinning) chuck, yet I've also never owned nor even operated a lathe that didn't have marks from such contact.

'Course, in my defense, I use 5C collets a lot, and it's hard to run the carriage into one of them.

The toolpost yes, carriage, no. :D

Doc.

deltaenterprizes
07-22-2008, 03:12 PM
Thanks for informing me about a really nice site!

A.K. Boomer
07-22-2008, 05:05 PM
Its always nice to have a two in one tool... copied or not - good job.

Bmyers
07-22-2008, 07:57 PM
Very nice job, you inspired me to make one for my newly acquired South Bend 9"
I got a little fancy and used a 1" digital indicator (cause it was all i had spare).

garyphansen
07-22-2008, 08:39 PM
I wish you had made a couple of extra ones for me! Gary P. Hansen

Chipslinger
07-22-2008, 09:03 PM
Umm, Is it really a carriage stop? or a carriage travel indicator?

airsmith282
07-23-2008, 01:25 AM
looks really slick some day ill have to make one for my lathe

Dragons_fire
07-23-2008, 04:43 PM
Chipslinger, i thought the same thing until i saw where he wrote that it works as a carriage stop without the dial indicator...

i think im gonna make one tonight.... do you have actual plans for it, or did you just wing it?? i have the smae lathe, so if you have plans, send them this way!!!

S_J_H
07-23-2008, 07:04 PM
Looks nice Brian. I made something like that a while back for my SB9. Pretty similar but I fixed a lever on it so no tools needed to position it.-
http://i109.photobucket.com/albums/n48/S_J_H/SOUTHBEND%209/restoredSouthBendlathe004.jpg

I added one for the cross slide as well which comes in handy for certain jobs.
http://i109.photobucket.com/albums/n48/S_J_H/SOUTHBEND%209/crossslideDI004.jpg

Steve

brian Rupnow
07-23-2008, 07:09 PM
Chipslinger, i thought the same thing until i saw where he wrote that it works as a carriage stop without the dial indicator...

i think im gonna make one tonight.... do you have actual plans for it, or did you just wing it?? i have the smae lathe, so if you have plans, send them this way!!!

I just winged it, because every lathe is a bit different. Some points though--In order to provide enough clamping power to act as a carriage stop, the clamp bolt should be 5/16" diameter. That being said, the absolute minimum thickness of plate used should be 5/8"---and 3/4" would be even better. Don't make the 45 degree bevel as deep as mine, or you will end up like I did, having to shave some off the end so it doesn't hang up on the flat area inside the 45 degree "way"--you want clearance there. As for length, I made mine so the tip of the dial indicator would touch the carriage near its outer edge, then leave 3/4" more so you have room to get the 1/4" clamp bolt that clamps the dial indicator in between the center of the dial indicator and the end. If I were doing it again from scratch, I would tap the dogleg of the bottom peice for a 1/4" set screw and let it stick up about 1/8". and put a clearance hole in the contact point on the top part ----that would keep the bottom peice from rotating when you loosen off the clamp screw to move the thing.

A.K. Boomer
07-23-2008, 07:12 PM
Steve I hope you give classes as to how to keep a lathe in stellar condition, that thing is a mint, great attention to detail.

S_J_H
07-23-2008, 07:17 PM
A.K. Boomer,
thanks! It was a total disaster when I took possession of it. My buddy was actually going to scrap it. I did a heck of a lot of work to it and it is now my primary lathe I use.

Steve

dockrat
07-23-2008, 08:35 PM
The one I made was way too simple...now I see I have to mount an indicator on it. :o

http://i253.photobucket.com/albums/hh67/Dockrat1/IMGP1017Medium.jpg

Errol Groff
07-23-2008, 08:54 PM
I made some carriage stops for 13" S.B. lathes. Also on the page are some other ideas for carriage stops.

http://neme-s.org/SB_Carriage_Stop/making_replacement_carriage_stop.htm

Errol Groff

J Tiers
07-23-2008, 10:30 PM
That looks very much like my first one.

When using it I found I had made it too thin, and it could cock a bit...... and mess up my set stop point. So I made another with some improvements......... It's wider, and includes a micrometer stop ability.

It was milled on the lathe, prior to even having a shaper, let alone a mill.

http://img.photobucket.com/albums/0803/jstanley/holdr1.jpg

http://img.photobucket.com/albums/0803/jstanley/holdr2.jpg

http://img.photobucket.com/albums/0803/jstanley/holdr3.jpg

Evan
07-23-2008, 10:41 PM
Here is a threading stop I made for my SB9. The SB9 already has a factory supplied threaded hole in the front end of the carriage for exactly this purpose. It's used by setting the knurled head bolt to stop the carriage from being wound in too far when taking another pass when threading. The tool is advanced with the compound for the next pass and the tool is withdrawn with the cross slide. The stop makes threading a lot easier by eliminating the possibility of a "one turn too many" error.

http://vts.bc.ca/pics4/tstop2.jpg

http://vts.bc.ca/pics4/tstop3.jpg


Here is a micrometer carriage stop for my SB9

http://vts.bc.ca/pics4/stop1.jpg

sidegrinder
07-24-2008, 12:14 AM
Here's my version...

http://i89.photobucket.com/albums/k203/sidegrinder/000000123003-1.jpg

http://i89.photobucket.com/albums/k203/sidegrinder/000000123001.jpg

More bling, and a spring:)

http://i89.photobucket.com/albums/k203/sidegrinder/000000123002-1.jpg

If you can find the right spring in your scrap box, it adds a nice positive feel.

dmckay57
07-24-2008, 02:53 AM
I've got to build me a version of that to fit my Sherline. Nice design.