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Post by dickdastardly40 on Mar 10, 2008 11:56:57 GMT
In a recent thread Emma was showing off her new Lorch lathe which didn't come with graduated feedscrews, I suggested the fitting of a DRO or digital scales as a pragmatic option but came across this thread on another site regarding an easy way to make a graduated collar which would maintain the 'purity' of the classic lathe: bbs.homeshopmachinist.net/showthread.php?t=25872As threads are wont to do it does ramble on slightly however the long and short of it is, that you can print a scale onto a self-adhesive strip and stick it around your handle or collar. It seems to me that if you fancied it and knowing the pitch of the screw, you could make a reversable metric and imperial collar to easily change flavours. Possibly a lot less trouble than making an engraved affair and knowing my luck messing up at the second to last line. Thoughts ladies and gents? Al |
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Post by circlip on Mar 10, 2008 13:32:12 GMT
Ship - Tar - Hapeth?
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Post by dickdastardly40 on Mar 10, 2008 14:34:40 GMT
Circlip, I'm not saying you're wrong, I'm not even sure I don't like what you're saying. Do you think that a printed label, however professionally done would spoil a machine for the want of an engraved graduation, especially if you had no access to any form of dividing head and engraving machinery which may cost a bit more than half a penny? Certainly how this set of handwheels has come out looks pretty good to my eyes:  Al |
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Post by circlip on Mar 10, 2008 16:36:21 GMT
Yep, they look absolutely beautiful Al, but don't you think the extra effort to either graduate them yourself or have them professionally (UGH) graduated onto the base material will make them easier to keep clean in the long run? Am I missing the point EMMA? Are you intending to USE the Lorch or is it going to be put in a display cabinet? Not trying to smartar4e Al, printed is OK to look at but not very practical for longevity.
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Post by dickdastardly40 on Mar 10, 2008 18:21:47 GMT
Clip,
I hope you don't think I am trying to be antagonistic, life's too short!
The reason I started a new thread was to posit the idea of a printed scale, not necessarily for Emma's lorch but in general. In time I might have a go at a diameter imperial instead of the present radius scale as is or a metric collar for my super 7. I have a computer and printer but no indexing gear, I could do several in one hit and see how long they last.
In the thread linked above the OP mentions the material he uses for the scales is both user friendly and long lifed with oils rubbed in etc.
Al
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Post by circlip on Mar 10, 2008 18:44:06 GMT
Don't even know what agnostic means Al  ;D ;D But I would beg to differ, If you've got a Super Seven, you've got a superb indexing facility. |
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Post by missemmajade on Mar 10, 2008 21:34:37 GMT
It's bought for use, I promise  and the lorch, like most Toolroom lathes, comes with a pretty good indexing arangement. the printed ones look like more work to get nice than a Graduated steel one. Keep the ideas coming tho!! *EMMA* |
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Post by circlip on Mar 11, 2008 7:01:25 GMT
The problem most tyro graduators encounter, and this also applies to worm wheel cutters using a tap as a cutter, is the fact they forget the last gap. If you're insistent on using "stick on" scales, you divide the circumference of the dial by the number of graduation lines plus 1, on the engraved variety, the division mechanism (hole plate or indexed gear wheel) automatically dictates the correct lines and gaps.
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Post by missemmajade on Mar 11, 2008 21:41:04 GMT
I wonder what people's thoughts are on the types of finish for graduated sleeves? I wonder if polished steen is best, or some kind of plating, or to make them from brass and silver them, or should I fill the graduations with paint or similar?
someone must have done this..
and yes I had forgotten about the extra space. we made a worm wheel once for a machine and it was 1 tooth short!
couldnt work out why it was always out..
*EMMA*
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Post by havoc on Mar 11, 2008 22:19:20 GMT
I like them matte. If they are shiny some lamp will always reflect in them at the most inconvenient moment.
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Post by circlip on Mar 12, 2008 7:11:51 GMT
Definatly matt, if you fill them with paint it will chip out in use, on the other hand if you leave them clear, they will fill with muck.
Bu**er me Havok, we finally agree on something, it must be because it's a leap year. Ian.
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Post by havoc on Mar 12, 2008 11:14:11 GMT
I think we would agree on more than this if we could discuss it face-to-face with the object of discord in front of us and a pint next to us. Maybe some day...
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Post by kneedeepinswarf on Mar 13, 2008 23:35:35 GMT
The best graduated collars in my opinion are the ones on Hardinge lathes. These are, at least on all the Hardinge lathes I have used, have a scale of white plastic with the graduations filled with black. Very easy to read and not subject to glare. Old Lorch lathes had collars of either aluminum or brass; not too bad for glare. I have also used lathes with steel collars, these can be difficult to read in bright light.
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Post by circlip on Mar 14, 2008 11:07:43 GMT
Turn collars, graduate, stamp numbers, polish surface to a high gloss and then have the surface bead blasted or matt chromed if steel or if alloy you could get them colour anodised, again matt.
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Myford Matt
Statesman
There are two ways to run a railway, the Great Western way, and the wrong way.
Posts: 621
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Post by Myford Matt on Mar 14, 2008 11:20:44 GMT
matt is best
Matt :-)
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Post by charles on Mar 22, 2008 1:41:02 GMT
 a good idea for 1of or short term use bugger i think i will require Braille on mine ;D
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;D ;D But I would beg to differ, If you've got a Super Seven, you've got a superb indexing facility.
