hts2000 brazing rods

[BILLSMOWERS]

has anyone tried hts2000 on magnesium chainsaw cases? i have had 3 Jonsered saws com in with pin holes in the oil tanks where they have been put down running and vibration had rubbed a hole in the case hts 2000 website sat it will braze magnesium & say suitable for chainsaw repair buy i have not had any luck with using it on magnesium it leaves the surface very porous & looks horrible in the states they tig weld it but can not get the az92 rods here in the uk in small lots

is it something i am doing wrong with the hts2000 as it works well on alluminim i always clean the surface with a stainless wire brush & the wipe over with acetone to degrease the surface

 

any help guys?

[spudulike]

I have tried a number of these type of brazing rods and had issues with most. One of the issues is getting enough heat in to the metal and the other, getting too much heat in the alloy and melting it:001_rolleyes:

 

The only bit of aluminium I have brazed successfully was a small bracket and used some brazing wire I got off ebay from a model shop to make exhaust manifolds - it was to make a missing lug on a Stihl recoil side crankcase but I chose to rivet and epoxy it to the case after producing a new lug and mounting plate.

 

They look great in the vids but personally, don't think they are that great.

 

I would use epoxy or fibreglass resin on both sides of the leak after a good degrease and see how that holds.

[BILLSMOWERS]

i tried chemical metal on one of them it lasted a week and got rubbed though i will try fiberglass next time but i like to make a permanent repair i hate stuff coming back

spud i am glad it's not just me with these rods

[wisecobandit]

Nope ive tried those rods to on a magnesium crankcase and a complete waste of time.I wasted my money on some to...

 

Set my mig up with alloy dissimilar wire and argon gas and still a waste of time. (welds alloy engine blocks fine so its the magnesium aspect)

 

The only way is a proper tig welder

[spudulike]

i tried chemical metal on one of them it lasted a week and got rubbed though i will try fiberglass next time but i like to make a permanent repair i hate stuff coming back

spud i am glad it's not just me with these rods

 

You can clean the bottom of the tank with solvent, thoroughly degrease it and then pour fibre-glass resin in it to it to cover the surface - done that once to a cracked Jonsered 525 I had once, if that is done and the other side is coated in say JB weld - or get some 16th gauge aluminium, fabricate a plate and epoxy it in place!