MIG Silicon Brazing

Reply Subscribe

Thread Tools

Search this Thread

Apr 22, 2025 | 06:32 PM

M2HB

Thread Starter

Fleet Mechanic

Joined: Dec 2021

Posts: 1,265

Likes: 521

MIG Silicon Brazing

Has anyone here used MIG Silicon Brazing when replacing cab corners?

I have not ever used it, but I know it is becoming popular in the automotive industry.

I have a Millermatic 350P, so I was thinking about trying it.

Apr 23, 2025 | 09:26 PM

Scotty's 52 F3

Cargo Master

Joined: Aug 2015

Posts: 2,076

Likes: 101

From: Marana, Arizona

I've used silicon bronze and aluminum bronze TIG filler and have seen others use it on body panels. I never knew there was silicon bronze MIG wire. Please follow up on this if you try it.
Scott in AZ.

Apr 24, 2025 | 05:08 PM

M2HB

Thread Starter

Fleet Mechanic

Joined: Dec 2021

Posts: 1,265

Likes: 521

A friend of mine has it set up on his Miller Multimatic 250 with a push/pull gun. I do not have a push/pull gun for my Millermatic 350P, and I really do not want to spend the money since I would rarely use it.

I am trying to figure out if it pays to take my cab over to my friend’s place to braze on the cab corners, or just weld them on with pulse arc.

That is why I am looking for folks with the experience so I can make an informed decision.

Apr 24, 2025 | 06:59 PM

seaves46

Laughing Gas

Joined: Mar 2004

Posts: 989

Likes: 113

From: australia

Just bear in mind it's not good to butt weld with it .
It is better off being used for over lapped joints .

Apr 24, 2025 | 08:52 PM

M2HB

Thread Starter

Fleet Mechanic

Joined: Dec 2021

Posts: 1,265

Likes: 521

I am thinking that the steel on those old trucks is heavy enough that my pulse arc will work just fine. I have already filled many holes.

The MIG brazing seems to be recommended by the factories for repairs that are connecting to hardened steel. I did not realize how much the factories use this process on new cars.