Vernier scale carriage stop

I haven't posted much with regard to projects (laziness?!) - but thought I'd put this up. For the longest time, on my old Raglan lathe, my stop was a simple block, but felt something better was needed. A video was made but that was 3 parts long - instead I made a very condensed version for a sort of competition that was going on - probably easier to watch to show the main process. One or two errors were made but then corrected so, the end result is still very successful.

I couldn't easily set up a 40 pitch thread, which would have given a finer scale for adjustment - instead used a 20 pitch but that still works very adequately. Used scrap material for most part.

The video can be seen on my web site, where I index most of my YouTube videos. Below is an image of the finished item ...

Attachment 19509

I like to see a video of it being used. I am new to turning and wonder why one would need adjustable stop.

Thanks for posting.

Ralph

Nice stop Chris and glad to see it posted here. I have watched a lot of your YouTube vids and enjoyed them all.

Cheers, JR

I've watched almost every video you made Chris! You inspired me to do many projects since I found your channel about a year ago. Keep up the good work!


Bob ("RJ" on youtube)

Duh, now that I think about it I can see where making the vernier graduations could use a adjustable stop.

And then I remember seeing a post where a guy had three adjustable stops in order to do graduations.

He had also said to always make the groove left to right not right to left to avoid the burr.

Ralph

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Thanks ChrisB257! We've added your Vernier Scale Carriage Stop to our Lathe Accessories category,
as well as to your builder page: ChrisB257's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/homemade-vernier-scale-carriage-stop"> <img src="/uploads/204470/homemade-vernier-scale-carriage-stop.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/homemade-vernier-scale-carriage-stop">Vernier Scale Carriage Stop</a> <span> by <a href="http://www.homemadetools.net/builder/ChrisB257">ChrisB257</a></span> </div> <div class="tags">tags: <a href='http://www.homemadetools.net/tag/carriage-stop'>carriage stop</a> </div> </div> </div> </div>
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I've watched almost every video you made Chris! You inspired me to do many projects since I found your channel about a year ago. Keep up the good work!


Bob ("RJ" on youtube)

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Thank you Bob.

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Originally Posted by Ralphxyz

I like to see a video of it being used. I am new to turning and wonder why one would need adjustable stop.

Thanks for posting.

Ralph

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Ralph - There are many times where during turning you want a positive stop with the carriage - for example, coming up to a shoulder. There is a video and I put a link to it in the original post - http://www.oldmansshop.com/vid-pages/emma-comp-stop.php - this was a compact version of the original construction work. No picture of actual use but perhaps you can imagine how it acts when set up. In fact I think at the end of my video there is a bit where the carriage is brought up to it to test - then just visualize a repeated cut being done up to that point.

Ralph don't feel bad I've been around lathes for 50 years and have only owned 1 lathe with a carriage stop. and that was the old Warner & Swayse #5
they are nice to have like has been said for step turning but I've always had a trav-a-dial so just never thought of clamping one one on.

Very nice work Chris, I have watched many of your videos and always enjoyed them.

Our toolmakers would use an indexing carriage stop using spacer blocks for setting, in fact the topslide was clamped up tight for rigidity, once you get used to working this way it is hard to go back, my topslide now lives in the cabinet and only used for tapers etc. I have instead a solid block post on my crosslide.Posted here. http://www.homemadetools.net/forum/t...1568#post74667

One of my earlier posts showed my version of a carriage stop here.
http://www.homemadetools.net/forum/h...1628#post74785
Regards
Olderdan

Didn't watch the video due to very bad internet connection, but have seen this picture of final result. Impressive. It's on my to do list.
LMMasterMariner

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Originally Posted by Ralphxyz

I like to see a video of it being used. I am new to turning and wonder why one would need adjustable stop.

Thanks for posting.

Ralph

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Ralph - imagine for example, using a boring bar and wanting to control accurately the hole depth so that with each cut pass the carriage is stopped at the same place every time. Same could apply in essence if turning outer diameter to a critical stop point. I now have problems that prevent me managing shop work and not sure I can find an example video very easily I'm afraid, though try the following link --.

The original part 1 build video can be found on my simple web site - https://www.oldmansshop.com/vid-page...e-stop-pt1.php

Chris

I'm not much of a safety Nazi but permit me to interject one observation...

If the carriage is being driven by the leadscrew or a separate feed rod, running the carriage into a locked down carriage stop can cause a lot of damage. When not in use loosen the screws on the stop so the carriage can push it along if accidentally fed into it under power.

If you have cause to fear such a collision you may even want to fit the stop with a buzzer activated by a microswitch whenever the carriage contacts the stop. Though, as with many safety devices, training yourself to be aware and careful may be a better solution.

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Originally Posted by mklotz

I'm not much of a safety Nazi but permit me to interject one observation...

If the carriage is being driven by the leadscrew or a separate feed rod, running the carriage into a locked down carriage stop can cause a lot of damage. When not in use loosen the screws on the stop so the carriage can push it along if accidentally fed into it under power.

If you have cause to fear such a collision you may even want to fit the stop with a buzzer activated by a microswitch whenever the carriage contacts the stop. Though, as with many safety devices, training yourself to be aware and careful may be a better solution.

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Marv - you are right of course but I never use the stop unless using manual feed! If desired to use it with leadscrew operation then a micro switch type of set up could well be useful, though I expect not infallible. Over the years I have done the bulk of my finer work manually feeding. Your other point - my block is secured firmly in use but not strongly enough to resist an accidental 'crash' if under power. It has served me well safely. Best, Chris

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Originally Posted by ChrisB257

Marv - you are right of course but I never use the stop unless using manual feed! If desired to use it with leadscrew operation then a micro switch type of set up could well be useful, though I expect not infallible. Over the years I have done the bulk of my finer work manually feeding. Your other point - my block is secured firmly in use but not strongly enough to resist an accidental 'crash' if under power. It has served me well safely. Best, Chris

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Chris, the remark wasn't aimed at you. It was intended as a reminder for the less experienced folks who may see this thread.

FWIW, I keep my carriage stop locked up against the headstock and have yet to run into it accidentally. OTOH, I ran my swarf tray into the headstock often enough that I did build an alarm to warn me about that...

https://www.homemadetools.net/forum/...6312#post83427

Fortunately the tray is thin sheet aluminum so the headstock was undamaged. I can't say the same for the tray.

Good construct Chris, and a very useful addition for a lathe.
One nit; the Vernier descriptor is not an accurate one as by definition a Vernier uses 2 scales to interpolate a reading.

https://en.wikipedia.org/wiki/Vernier_acuity

Perhaps a better name would be "graduated dial"

The JET 1440 lathe I acquired many years ago had an adjustable stop which is very similar in principle to the one you made.
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