MadModder
The Shop => Tools => Topic started by: sbwhart on March 10, 2011, 03:48:37 AM
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I've been asked by a fellow model engineer if I could help out with a tricky bit of machining that he just doesn't have the kit for. Its a long slender 5/32 screw cut butress thread, that needs a fixed steady to make.
The fixed steadies you get suplied with most lathes are far too big for small slender jobs, so I decided to make my own, I've seen this design someware before so its not mine just my interpretation on it.
This is it quite simple realy.
(http://i431.photobucket.com/albums/qq32/sbwhart/Modmodder/100_4965.jpg)
It just clamps to the running centre, this is how you use it.
(http://i431.photobucket.com/albums/qq32/sbwhart/Modmodder/100_4971.jpg)
I'll post a few more pics when I cut the thread, fingers crossed. :ddb:
Stew
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what a bril idea.
if you made it with 2 fingers and put a small bearing on each.
definately on my list.
dont have any steadies at all. dont see me needing much more than this
Tom
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Hi Tom
To get the best use out of it you need to make yourself one of these,
http://madmodder.net/index.php?topic=1208.0
http://madmodder.net/index.php?topic=1239.0
Fitting bearings would be a Rolls Royce job not sure if it would work any better though.
Stew
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Just completed screw cutting the butress thread with the steady worked like a dream.
(http://i431.photobucket.com/albums/qq32/sbwhart/Modmodder/100_4978.jpg)
And just to show it wasn't a fluke
(http://i431.photobucket.com/albums/qq32/sbwhart/Modmodder/100_4979.jpg)
Made a few extra.
As I had to under cut the rod for tool run out I'm going to cut the threaded part off turn a small spiggot on it and join it back onto the main rod with silver solder.
Stew
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Oohhh..... STEW! :bugeye:
I really, really like that. :thumbup:
Blummin well done! :clap: :clap:
David D
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I like that one; a great idea! I need to make one of your little centers too. :beer:
I cobbled up this rig a couple weekends ago when I needed a couple feet of 5/16" aluminum rod and the only thing I could find on a Sunday was 3/8". I mounted a scrap of 1/2" HDME onto the carriage with a bit of steel angle, drilled & reamed a 3/8" hole in the plastic with the drill & reamer mounted in the chuck and voila! Cheap & cheerful follow rest. I switched to a sharp HSS bit after the pic because the carbide bit caused too much deflection to make the .063" cut on a single pass.
(http://i57.photobucket.com/albums/g227/DBAviation/FollowRest.jpg)
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Nice bit of fixing there Mr Bird, that ones filed away.
Stew
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Nice one Stew :thumbup:
And good threads as well :clap: - how were the nuts done ?
:beer:, Arnold
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Nice work, I like it. :thumbup:
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Thanks Chaps
Arnold I made a tap like this
http://madmodder.net/index.php?topic=4384.0
Stew
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My old Drummond lathe has a steady that you put wooden blocks in to support the workpiece. Just clamp in a block or two and drill it out to fit the work. Such a simple idea, fits any size and would not mark the work (I assume).