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Member postings for Tel

Here is a list of all the postings Tel has made in our forums. Click on a thread name to jump to the thread.

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Thread: Turning very thin bar
17/01/2012 10:24:15
'cos the job is a short section of 0.070" turned on the end of a bit of 3/32" rod - presumably the tail on a valve spindle, or some such. (post#1)
Thread: 9x20 Lathe Parts
13/01/2012 22:18:52
Thanks for those - all handy stuff to have as I came to terms with this one and what it needs. It was bought, and will always be, a second machine in my shop, as the Myford has pride of place, but with a resident brother in law and an interested son in law I had to ease the pressure on the old gal somehow!
13/01/2012 16:39:02
I'm no expert on the 9x20's by any means, having only had mine for a few weeks, but it seems to be pretty well accepted that they do not come RTR out of the box. You probably need to steel yourself to the fact that you will need do do some work on it. I've certainly found that to be so.
13/01/2012 09:35:25
It's more intuitive to wind the handle clockwise to move the slide in, other than that I don't think there is any reason not to use a r/h thread. BUT it is just as easy to cut the thread l/h anyway, so why not have it going the 'right' way. Same with the nut - odds on that will have to be screw cut as well, and it is no more difficult to make it l/h
12/01/2012 21:29:35
Have a look here
Thread: Anyone willing or able to cast a small Top Hat ?
12/01/2012 00:52:44
Might be easier to fabricate one in brass.
Thread: Basic geometry question
11/01/2012 07:55:34
Yeah, well now that we are all curious ....... WHY??????
Thread: Mystery Tool
07/01/2012 05:38:19
I still have two of 'em in my kit - used to use 'em on a daily basis back when the world was still flat.
Thread: Wheel Cuting thin tooth?
07/01/2012 05:34:06
"Blank size won't cause this error; blank too small, all teeth slightly too thin and vice versa."

Ah, but what happens if the blank is the wrong size and the (correct)  depth of cut is set on said incorrect blank? (I don't know, just posing the question).

Edited By Tel on 07/01/2012 05:35:10

06/01/2012 08:25:08
AHA! The magic phrase! Rotary table!
 
I've never had much luck with gears using mine. My gear cutting is all done on my version of Harold's whiz-bang dividing head!

05/01/2012 21:20:04
It's on all wheels? That seems to say blank size error then. Silly queation, but have you counted the actual teeth it's cutting?
05/01/2012 21:08:42
Yep, almost certainly a slight slip with the indexing - I had the same thing happen on a 40dp wheel about a year ago - one thin tooth, one fat tooth beside it!
 
(N + 2.76) M tho? I use (N+2) M - same as DP's - works ok for me - I cut 3 x Mod 1 45t's yesterday, in fact - I'll get a pic of 'em later.
 

Thread: Blacking
03/01/2012 03:20:36
There's no need to run your piece up to red heat at all - just heat it until it reaches the colour you want, then quench in oil. As others have said, the type of oil is not too critical, you can even set the colour in water and then oil it, but it won't be as long lasting.
Thread: Turning very thin bar
01/01/2012 10:32:53
Yeah John, I read about rose bits some time back in the 80's - probably either Tubal or LBSC - made up a few in common sizes (still have 'em) but don't like 'em as much as the box tool.
31/12/2011 19:26:58
Yeah Norm, I made mine in 1994 and its probably only been used a dozen time since, but when it is ......
31/12/2011 10:09:25
Yes, it does suffer from the defects you mention, however, as it is principally used as a single pass tool on stock material I have not found it much bother - the range of bushes you need will not be that great, and once you have 'em, you have 'em!
 
What you see in the pics is a bit of 1/8" brazing rod taken down to an accurate 1/16" in a single pass. Now the beauty of it, of course, is that length, within reason, is no object - I would be pretty confident that I could turn 6 or 8 inches of 1/16" with no trouble with that set-up.
31/12/2011 07:51:30
 


31/12/2011 07:45:26
You probably need to take a bit of time and make up a version of my handy-dandy box tool, along with a handful of guide buses for it - doesn't get used often, but when it does it's priceless!
 

Thread: How do I cut this taper
29/12/2011 03:02:06
Since the dims are given in fractions I should think that 'rule measure' is plenty close enough. As for the grads - they still make mirrors y'know!
 

Edited By Tel on 29/12/2011 03:05:30

28/12/2011 21:02:46
'How do I set my compound slide at an angle of less than 1° grrrr'

The taper being purely cosmetic, you will get it close enough by simply eyeballing the graduations on the top slide base - set it to the 'under' side of the 1° mark.
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