Welding Chainsaws.

Those welds look great MagCraft.

I'm a hobby guy to, have a good inverter tig.

Mag is the most difficult to weld by far for me. I learned to Tig on aluminum, which is supposed to be a no-no.

Here's an AV mount repair I did.

 

Is this your MO?

The Doc is in

 

You're probably super talented, but jumping into other welder's threads... well... I've seen this before:

 

Looks to be a bunch of undercut on that top weld.
There are many many production roles where that would not be acceptable.

Looks like it's pretty thick aluminum.

Also all that granular weld on the end of the bead is preventable if you don't leave craters at the end.

 

Boomstick= Will

 

This thread is not about welding, it is about the restorations of old saws where parts are no longer available and to show what the possibilities are when it comes to repairing some of the old magnesium.

I want people to see that if a piece of mag is broken that it can be repaired and made to look original again.

I would also like to say if you have never welded on the cast magnesium that is used in chainsaws well you should try it.

 

drf255 looks like a pretty good job. Nice.

 

undercut? there is white discoloration at the toe of the weld, that's oxidation. and it's 1/8x3 inch flat bar.

scott

 

Exactly. Let's go further--- it's about fixing something that is trashed. Something that you can now use to cut wood and heat your house.

 

some sand cast aluminum transmission housing repair I did today. just in case my FHC post count wasn't enough credibility.

-scott

 

How bout Aluminum Repairs?

This is a 2100 jug. Marshy IIRC.

I had to free form the lost part of the second fin.

This was prior to getting a small blast cabinet, which makes the finished product look much better.

 

That was actually a 285 cylinder, moot point I suppose. Saw runs great and I'm thankful for your talent and generosity. Were you at the NY GTG?

 

Want to do another? Spare 460-- don't need it...yet.

 

I'm thinking it doesn't need it, but that's a big area without fins so who knows.

 

I personally would run that as is. Likely not worth the work.

If your concerned about the cooling, an easy thing to do would be to add some metal to #3 and #5 fin. That would be counting downwards and calling the intact top fine #1.