I just had to do some -12an fittings in a fuel tank sump and it was a straight travel affair due to space and impairment of movement.

 

Do you have any pic's of this?

 

yes there are if you search back to his thread, however it's a pointometer and three wires. not much to see...

i used a spare dremel foot pedal control i had laying around for mine.

 

any proccess GTAW, SMAW, SA, GMAW, FCAW-G all like a creater

 

Would you mind posting a pic .

 

practise your welds on scrap metal. clean the area good and weld away. I think you move to fast wile welding.

 

Collector attempt #2

My dad was lucky enough to get some scrap 1.5" sch40 pipe.about 10 feet of it freshly sandblasted

slicing it up on my "jig" haha



another good fitment



snky snky


A little bevel


After beveling, wirewheeling, and wiped with rubbing alcohol



Root pass no filler

Side 1



Sh$% tack weld on side 2 broke. had to vice it back together and retack.


Side 2


not fully penetrating on the root passes tho. idk if i need more heat or just go slower?


This happened once after a weld, as soon as i turned off the gas it went blue. i think the tungsten was too hot when i turned the gas off.


Side 2 root pass done


Side 1 root pass done


The top on the root pass. ugh..still not good. it wont form a puddle forever and then as soon as i start moving at the top it burns it up extremely fast.


1 pass with filler side 2


1 pass with filler side 1


top with filler


end result from the inside



It definitely came out alot better than the first one. i think cleanliness and the thicker material helped alot with that one. but also learning new tricks from everyone's comments. that helped a lot. i made sure to keep the tungsten out only about 1/16", always ground the tungsten in parallel, cleaned and beveled the material like suggested kept consistent speed etc etc.


Please leave your comments on this second attempt!!

thanks guys!

-Luke

 

you do not need to do a root pass on collector's. and i think you are still using to much heat, based of your haz it looks very hot.

you still need to work on your consistency with adding the filler, this will take time as i still strugle with this after 1 year.

go get some plate say 1/8th inch stainless and bevel it a good amount and go at it. just do 1 pass with filler and worry about your technique not color or whatever.

i prefer ss over mild as i don't like how the welds turn out on mild. but that is just my personal preference.

once you prefect the flat plate wedls then try another collector.

 

hmm, well what are your thoughts on the penetration? im not seeing much of anything on the inside of the collector.

the welding on this 1.5" sch40 collector was done at 65-75amps. i would adjust it to see if it felt better hotter or colder. but i think most of the time 70amps felt good.

is that too hot?

EDIT: also, when is a root pass appropriate if not here? i thought it was a good idea to do on thicker metal such as sch40?

thanks,

-Luke

 

it looks to me like you are now making something that will hold. its just up to the amount you practice now.