Miniature welding

I get displacer cylinders, and displacers TIG welded by a professional welder, they are made from stainless tubing .014", and .010" thick, my mate just said, don't get much thinner, I can't drop the amps any more, he did a great job. Ian S C

Edited By Roderick Jenkins on 01/03/2012 12:56:11

Paul

Give Merv a ring and go and see what he can do with a tig welder.

The Ripple size can be varied which becomes obvious when you have lots of the same item made in different fab shops. So this may help your scale issue.

I hahe seen 16 gauge but joints that you could hardley see the ripple and others that looked like overlapping sea shells.

Steve Larner

This has been a most interesting thread. I've only tried stick welding and the results look like a line of mutilated slugs - although I've managed to weld two vehicles through an MOT!

I did manage to make the air intake casing for this engine out of 1mm steel from an old storage heater, but it needed a fair bit of fettling and filler!

Neil

I tried welding using a darning needle, some wire and croc clips and a 7AH fire alarm battery.

Some very believeable sparks and a scorch mark across the steel. Burnt away several mm of the needle which got bright orange, then the wires go so hot that I had to stop.

Nei

l

I've seen working models of milling machines and lathes. How about a welder?

Paul, is the part you going to weld, a strength part, or just ornamental, If reasonable strength is needed, just get some 1.5 rods, drop the amps to 40 or so, then tack weld it every 60mm apart, Do the outer edges first, after clamping it together, then 1 or 2 tacks in the middle, If the back is out of sight also put tacks between the ones on the front, Why do it this way,??? its because of distortion of the thinner section, you can then grind/file away the excess, then epoxy or use metal filler (ie cold weld). as said before try a test piece first.

John Holloway

PS my workshop was flooded after the heavy rains we had, down here in OZ.