what size filler rod to use?!?
 

iam gonna start on my manifold and i want to know what size filler rod should i use on ss sch40? thanks for any info guys...

Re: what size filler rod to use?!?
 

I generally use 1/16 but I use 3/32 for head flanges.

Re: what size filler rod to use?!?
 

ok thanks man...i also have to run tri-mix gas for ss dont i? or can i run pure argon?

Re: what size filler rod to use?!?
 

i use what ever size i need, if it seems like i am dipping too much then i go a little bigger. i have had no problems using strait argon, only thing is if you want the penetration on the backside to look nice you have to purge the air out with argon.

Re: what size filler rod to use?!?
 

Has anyone tried on Sch. 10/40 using ridiculously large filler rod and a good amount of heat to get good penetration on a single pass?

Re: what size filler rod to use?!?
 

It is not a good idea. The puddle will wander more, and the weld will be more inconsistent and uncontrollable.