Welding a Small Part

[Sodo]

Awesome! A "flapper MIG !"

Homeowner models only have "dumb" presets but the pros prefer to dial in the amps, wire speed and grit. :laughing:

 

[Shield Arc]

Homeowner models only have "dumb" presets but the pros prefer to dial in the amps, wire speed and grit. :laughing:

Maybe dragoneggs will correct me if I'm wrong. When he brought his Miller 211 over for me to help him with welding that thin wall square tube. I had him set the machine just like he had it. He used the door chart. Far as I'm concerned the door chart was way off. :thumbdown:

 

[Fawken]

Stick weld:
#5 (used) nut to cast iron gas pipe connector (all I could scrounge)
AHP in stick DC mode
68 seconds

 

[downsizingnow48]

I'm stuck here in Sacramento, painting the house! My wife went out of town and I promised it would be done when she got back. And the welder is 4 hours drive at another place. So can't offer up my version. Going to make a half dozen of those things (pre-weld) before I leave here, so that a couple will turn out presentable.

 

[Sodo]

Pat by the time you get to your welder this threads gonna be 12 pages

Heres another using EMT (1/2" conduit), and the 3/8-16 nut.
MIG setting still the same, 14ga (which is .10" thick) &.030 wire. This works pretty good.

EMT is less than 1/16" thick

 

[kencunningham]

If you are concerned about the strenght of the nut, see if you have any nut and bolt companies around and try to get a 2H nut. It will be much heavier and of better metal quality.

 

[Sodo]

OK I see what this part is for. NOT a precision welding project (other than for "sport")

Seeing as this is an attachment to a hydraulic cylinder I think 3 tacks then MIG it all the way around in 2 or 3 welds then grind (if necessary) to fit inside that bore. What Shield Arc did. Not too hot, with concern for the 3/8-24 thread inside. I'd still use a 14ga setting. Looks like the whole part is hidden inside that SSQA pin (?).

 

[downsizingnow48]

On the hardware, these days I get almost everything from McMaster Carr. They have a shipping center in Los Angeles. They have the extra wide extra strong nuts. The nut I am using is a high hex nut, same width as a regular nut to fit into the space available, but about 50% longer, I want the extra threads on the cyl rod end.

On precision, agree, it is not the space shuttle, but the end product has to be straight and concentric, that is why I went to the trouble of making a press fit lip to seat the nut in the correct position on the tube prior to welding.

I will be happy with any of the welds shown! And appreciate the advice and illustrations provided. Many thanks.

 

[Fawken]

On the hardware, these days I get almost everything from McMaster Carr. They have a shipping center in Los Angeles. They have the extra wide extra strong nuts. The nut I am using is a high hex nut, same width as a regular nut to fit into the space available, but about 50% longer, I want the extra threads on the cyl rod end.

On precision, agree, it is not the space shuttle, but the end product has to be straight and concentric, that is why I went to the trouble of making a press fit lip to seat the nut in the correct position on the tube prior to welding.

I will be happy with any of the welds shown! And appreciate the advice and illustrations provided. Many thanks.

You're welcome. We all had fun- I hope.

 

[Sodo]

The best way to make that concentric is to put a taper on the nut, and have the thru hole fit tightly on a shanked 3/8-24 bolt. Snug it down then do your 3 tacks it will be very straight.