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#Post#: 13058--------------------------------------------------
Re: Welding Chainsaw Parts
By: Chainsawrepair Date: November 20, 2012, 7:52 pm
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Nice 8). Wouldnt have figured it would have held in that lower
area of handle. Good Job once again.
#Post#: 14934--------------------------------------------------
Re: Welding Chainsaw Parts
By: Cut4fun Date: January 5, 2013, 10:09 pm
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This was a ad at the top of a forum I was reading on. What do
you guys think?
(HTM) http://aluminumrepair.com/land/index.asp?src=google&gclid=CLSXoLHt0rQCFYw-MgodRl4AhA
#Post#: 14935--------------------------------------------------
Re: Welding Chainsaw Parts
By: 660magnum Date: January 5, 2013, 10:26 pm
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I don't think a regular propane torch will melt that solder?
#Post#: 14939--------------------------------------------------
Re: Welding Chainsaw Parts
By: Cut4fun Date: January 5, 2013, 10:40 pm
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[quote author=660magnum link=topic=737.msg14935#msg14935
date=1357446376]
I don't think a regular propane torch will melt that solder?
[/quote]
Click on the 6min video in top right hand corner of the page.
#Post#: 14941--------------------------------------------------
Re: Welding Chainsaw Parts
By: 3000 FPS Date: January 5, 2013, 10:51 pm
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Well we all know that magnesium is flammable and hard to put out
once started. The argon gas on a Tig welder is what helps to
prevent it from catching fire plus it prevents oxidation from
the oxygen in the air. If you get a piece of magnesium hot
enough with a torch what is there to stop it from catching fire
and how can it be stronger than welding with a Tig and argon gas
if there is oxydation occuring in the weld.
#Post#: 14943--------------------------------------------------
Re: Welding Chainsaw Parts
By: 660magnum Date: January 5, 2013, 11:03 pm
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They were using Mapp gas on the thin stuff. On the automotive
cylinder head they had something big like a rose bud for a
torch. They have the Mapp gas at most hardware stores as well as
the torches. Mapp gas is in a yellow tank.
If you've ever seen a magnesium fire you will be very scared of
it. I used to melt a lot of scrap aluminum in a foundry and
occasionally would get a piece of magnesium in the pot. There
would be a big flash (like a photo flash bulb) and it was gone.
This stuff has been talked about a lot in the model airplane
glow engine forums and seems to work great on the die castings.
#Post#: 14979--------------------------------------------------
Re: Welding Chainsaw Parts
By: Chainsawrepair Date: January 6, 2013, 11:08 am
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Sorry guys I meant this for aluminum fixes only and realize I
posted in the mag welding part now.
There was a thread about welding on cylinders somewhere.
#Post#: 14982--------------------------------------------------
Re: Welding Chainsaw Parts
By: 3000 FPS Date: January 6, 2013, 12:02 pm
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Ok sorry I did not know you meant it for aluminium.
I saw this demonstrated some years back at a swap at I was at
one time. If I remember right the flame had to be at just the
right distance and heat range to get it to work and flow real
nice. It would take some practice but I can see it working.
The other thing about aluminium is that you have to clean the
surface real good because of oxidation. The oxidation actually
takes more heat to get through then the aluminium itself. So
you have to clean it well enough to get ride of the oxidation.
I use a stainless steel brush because once again a regular steel
brush will contaminate the weld. I think scotch brite works
well too. Hope this helps.
#Post#: 27741--------------------------------------------------
Re: Welding Chainsaw Parts
By: 3000 FPS Date: November 18, 2013, 7:18 pm
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I wanted to show a before and after of a weld job on a Poulan
3750 Tim Allen. The area where the chain adjuster sits was
broken out because the clutch cover got tightened down on it.
A lot of the welding was done from the back side.
[img]
(HTM) http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=737.0;attach=4397;image[/img]
[img]
(HTM) http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=737.0;attach=4399;image[/img]
#Post#: 27742--------------------------------------------------
Re: Welding Chainsaw Parts
By: 3000 FPS Date: November 18, 2013, 7:23 pm
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Here is a picture of the saw all back together and ready for
cutting.
[img]
(HTM) http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=737.0;attach=4401;image[/img]
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