The Breakroom > The Water Cooler

Please yourself

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John Stevenson:
I'm not saying I make many mistakes but I get thru about three 15 Kilo reels of MiG wire a year  :scratch:

This is just on turning and milling jobs, no fabrication.

Before.



After.



JS.

Darren:
John,

Did I understand that correctly, you built up the shaft dimeter with mig welding and then turned it down to size?

What's the weld like to turn?

Thanks
Darren

bogstandard:
Wonderful rescue job John.

It is so nice to see the old methods being used rather than just buying brand new parts.

The jobbing workshop, now sadly declining in this day and age of redundancy being built into everything.
But for the people in the know, it can save them a fortune in replacement parts.

John

John Stevenson:
MiG weld turn nice once you have an uninterrupted surface, because it's pure wire and gas there are no inclusions like you get from the flux on stick welding.
You can get different grades, some which can be heat treated but the standard common or garden stuff works well.

I always turn undersize before welding so the transition layer is under the final size as often you can get 'smear' marks where the two join.

This one was a bad one in that the bearing diameter and the shaft diameter were toast and you always have to juggle to get it running true again.
A good selection of steadies, both normal and cathead are needed and also a good rotary 4 jaw in the tailstock is handy.

JS.

sbwhart:
Nice one John
 :wave:

In the good old days before the "Bean Counters" took over our company, we had a tool room and maintainance shop where we had a metal spray kit for building up shafts like this. There wasn't much we couldn't do on site, now we can do next to nothing.

Cheers Stew

The
Grumpy old git
 :wave:

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