paul
Member
Posts: 8
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Post by paul on Apr 30, 2007 20:25:28 GMT
Doh! Yes George, that makes perfect sense and qualifies for the 'obvious solution' I asked for at the start of the thread...
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Post by dickdastardly40 on May 1, 2007 13:28:17 GMT
Speaking of offsetting tailstocks, there are devices you can buy/make which fit into the tailstock taper to allow offsetting without touching 'as fitted'.
I expect Paul is eager to build something tangible to show to SWMBO rather than further tooling however might be something worth adding to the 'must build in future 'list.
Al
Edit: Sorry Tel, just re-read the thread and see you said that already!
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jackrae
Elder Statesman
Posts: 1,334
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Post by jackrae on May 1, 2007 14:28:39 GMT
Paul you say that your tool-post can only lock in any one of four positions and not mid-travel. If you lift off the tool post you may be able to remove the ratchet lock, re-assemble the tool post and you should find it will lock in any position you choose
The ratchet lock is a bit of a nuisance and might really only usefull to guys who are working on production lines, rotating between different tools when the tool post is fully equiped.
Jack
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paul
Member
Posts: 8
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Post by paul on May 1, 2007 17:16:34 GMT
Al, SWWBO doesn't mind, everything I 'create' elicits the same response; "that's nice dear".
I can see that that gadget might be very useful though...
Jack, that's definitely something I'll look at but I don't want to start disassembling my new lathe just yet as I've got more urgent things to do with the little workshop time I get!
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paul
Member
Posts: 8
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Post by paul on May 1, 2007 19:18:07 GMT
Well it didn't come out quite as planned - the taper 'tapered out' about 2/3 of the way along the rod! I must have had it set up wrong. No matter, as Tel said, this is a cosmetic touch only, at least the end sizes are right and it's soldered up to the palm ok (i.e. perpendicular). I just need to make a fork for the other end now. I like this fabrication business it's fun!
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Post by jgb7573 on May 1, 2007 19:51:52 GMT
Looking good Paul
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Post by dickdastardly40 on May 1, 2007 20:42:47 GMT
This is going to sound like nit picking which I certainly don't want to however, as you reduced a 3/4" rod to make the shaft anyway, could you have included the palm(flange) on the end.?That would have saved an extra machining and soldering operation and would have been perpendicular by default.
Looks good and good progress hich is more than I can say for my project.
Al
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paul
Member
Posts: 8
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Post by paul on May 1, 2007 21:40:22 GMT
Yep Al, in fact the single-sentence instructions for this part suggest machining from solid as an option. Trouble is I wouldn't really know where to start with that especially as the 'palm' has to be a perfect match with the crank bearing. I suppose I could have turned the palm end to 19mm then the rod part tapered 6~5mm then filed off the flats. Trouble is I'd have to fabricate the fork at the other end anyway. For now I'm sticking to simple operations and lots of elbow grease! Thanks for the feedback
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Post by Shawki Shlemon on May 2, 2007 9:16:51 GMT
My tool post has ratchet and locks in four positions , but I can and do place it anywhere in between and tighten the handle and do what I want to do .
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paul
Member
Posts: 8
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Post by paul on May 16, 2007 20:06:17 GMT
Although I was quite pleased with this part a couple of things were niggling me: 1 Dickdastardly threw down the gauntlet by suggesting machining from solid to ensure concentricity (I think that's a word!) 2 I wasn't sure how I was going to make sure the fork was 'square' when it came to soldering that bit on. So I decided to try making it from one lump and here's the work in progress: The palm end and taper is ok and I drilled a nice central hole while set up that will be opened out to form the fork (the outer parts of that have just been filed near to size for now). So far so good but a long way to go yet - and all for a simple con rod!
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lancelot
Part of the e-furniture
Posts: 471
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Post by lancelot on May 16, 2007 22:08:15 GMT
''From Solid''...I have yet to go down that road on my engines, hope mine are as good as yours. Keep it up Paul. All the best, John.
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Post by dickdastardly40 on May 17, 2007 21:21:32 GMT
Paul,
How did the taper go this time? Cam't quite see in the picture, good stuff though, shows there's more than one way to skin a cat.
Our new (16 week) baby is severely eating in to any workshop time.
Al
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Post by Boadicea on May 18, 2007 7:51:30 GMT
Paul, Our new (16 week) baby is severely eating in to any workshop time. Al It is never too early to introduce someone to the workshop and the humming of the machinery may induce sleep.
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Post by chris vine on May 18, 2007 23:25:27 GMT
Hi Dick,
We have a 13 month baby boy. He loves riding in a coal truck on the garden railway, even without a locomotive. You know he is still enjoying it because he holds his hands tightly in his lap so you can't lift him out easily.
Also he loves watching the lathe chuck go round really slowly. It almost mesmerizes him. Perhaps I can put one next to his cot......
Chris.
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paul
Member
Posts: 8
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Post by paul on May 26, 2007 17:31:05 GMT
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