Ozito 90amp Gasless MIG Welder

Gday again,
Just did a quick search on it.
Its gasless
only 10amp
Duty cycle is-
10%@90 amps
30%@60 amps

In other words...its a toy.
Only good for light gauge material (Gal. wall framing or thin tube etc)and a $hiity looking dirty weld as its gasless.
Definately not for anything structural.
You would spend more time waiting for it to cool down than you would welding.


Cheers

Try something like this...around $1500 but a lot more practical.

https://pgw100.portal.gases.boc.com/boc_sp/nz/Products/Electric_Welding/MIG_Equipment/BOC_MIG_170P.asp

Gasless is good for outdoor use.

Yeah mate...thats about it.

Yep.....what Howesy said.

He beat me by ....that much.

Lionel.

Gday Ray,
This is possibly nit picking, but I think a few thing you said could be made a little clearer.
Are you a retired stick welder?
I would also recomend stick welding to a beginer as there is a lot less chance of cold lap. You can do a lovely looking MIG weld that wont hold, but a bad stick weld generally looks crap.
I think the only use for gasless MIGs is on light gauge material where wind is a problem eg ..wall framing on site etc.
Im also a fan of stick welders but you cant beat MIGs for speed and ease in the right situation eg. all types of RHS, structural beams etc and new or clean metal, but inside a workshop.

As for-"When people say that this or that welder will weld certain thicknesses of material, this is not so. If your material is prepared correctly you can weld any thickness by doing multiple layers of weld metal"

I dont think that would be the best advice, It is true to a point if people prepare the joints and preheat , but I doubt anyone using a 90 amp welder would know much about this? Remember a 90 amp welder will be running flat out burning 0.9 wire.
The duty cycles on these little welders are so low you would have to stop and start that often you would end up with a heap of cold starts all the way through the join. And I doubt you would keep up with the heat dispersion from heavy plate anyway without continous pre-heating with an oxy.
It wouldnt be a safe way to go and certainly wouldnt be practical.


IMOA
Cheers

Ray have to disagree, If you are welding 10mm plate and require a 3rd penetration and you use a to smaller welder wouldn't you get a to rapid heat dispersion causing low carbon growth making the weld weak and brittle.

If you can not generate enough heat in a weld to cause pooling wouldn't it be a weak weld.

Layering of welds is not done because the welder is to small so you have to do multi passes.

Whats a first class welder?

If you use a welder with a low duty cycle you will know at the start of the weld it will have full penetration and as the weld progresses less penetration, less heat, less carbon growth.

Australian standards states a weld has to be constant from start to finish in weld width and penertration.

plus i have not seen a good ozito product yet,bought a couple and both went back.

Thanks Rob, much appreciated

Super