student123
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On my 2nd build attempt,having scrapped the first , an (allegedly) simple oscillator based on a design from the little machine shop
http://littlemachineshop.com/Projects/OscillatingEngine.php
On building the cylinder , I've faced the edges & drilled/reamed the bore, on my Taig lathe , holding the piece in the milling vice connected to the cross slide, shims to raise the cylinder.Hit some problems, inc the shim stock moving.
I then measured the distance from the edge of the bore to the edge of the cylinder, on the face that will touch the upright (is there a technical name for that face?)
After the drill/ream , I had 10mm at one end of the bore , 10.4mm at the other
I fly cut to try level the face-that-will-touch-the-upright, getting the difference to 9.95mm & 10.2mm. Another milling attempt to level the face , now has the diff at 9.2mm to 9.75mm.
My thoughts are now to do a new cylinder from scratch (return to go, do not collect £200).
Drilli/ream it with my quite new £35/$50 drill press.
Or to divert off to make a quality Taig vice, eg
http://www.deansphotographica.com/machining/projects/mill/vise/vise.html
But I'm wary of diverting to a subsidiary project with a risk of that spawning more problems
If I have to remake, first thoughts are to try the cheap & cheerful drill press - I just need to think thru getting the piece vertical for the drill/ream or else I'll repeat the problem.
Perhaps my first question should be , how close do these measurements need to be , how far can I get away with a piston off vertical on an oscillator?
Any other suggestions welcome.
Mike
http://littlemachineshop.com/Projects/OscillatingEngine.php
On building the cylinder , I've faced the edges & drilled/reamed the bore, on my Taig lathe , holding the piece in the milling vice connected to the cross slide, shims to raise the cylinder.Hit some problems, inc the shim stock moving.
I then measured the distance from the edge of the bore to the edge of the cylinder, on the face that will touch the upright (is there a technical name for that face?)
After the drill/ream , I had 10mm at one end of the bore , 10.4mm at the other
I fly cut to try level the face-that-will-touch-the-upright, getting the difference to 9.95mm & 10.2mm. Another milling attempt to level the face , now has the diff at 9.2mm to 9.75mm.
My thoughts are now to do a new cylinder from scratch (return to go, do not collect £200).
Drilli/ream it with my quite new £35/$50 drill press.
Or to divert off to make a quality Taig vice, eg
http://www.deansphotographica.com/machining/projects/mill/vise/vise.html
But I'm wary of diverting to a subsidiary project with a risk of that spawning more problems
If I have to remake, first thoughts are to try the cheap & cheerful drill press - I just need to think thru getting the piece vertical for the drill/ream or else I'll repeat the problem.
Perhaps my first question should be , how close do these measurements need to be , how far can I get away with a piston off vertical on an oscillator?
Any other suggestions welcome.
Mike