D90mitch · Jun 12, 2015

Hi all,

Started teaching myself to mig weld the other day. All was going quite nicely with the .6mm wire. However given the applications that I will be doing, I bought some .8mm wire (and tips) as I had been recommended.

So I got the new .8 all set up and the wire is feeding through just fine.

Using just CO2 whilst in these early stages. My welder is 150A and a fairly hefty unit.

My problem is, since I have changed to the .8 wire, it struggles to maintain a weld pool and after a very brief period sticks.

Any ideas?

trax · Jun 12, 2015

more wire speed, more power, more gas.. play with it

good qual wire makes a big difference

D90mitch · Jun 12, 2015

It's one setting off last for amps and if I put it on the highest it blows a fuse. Would more wire speed really help in this situation? It's pretty high already as is the gas.

All was good until today

owl · Jun 12, 2015

Try turning the wire speed down, also you only need enough gas to stop oxygen getting at the weld, so turn that down and save some money.

trax · Jun 12, 2015

depends on the metal thickness. if it's 150 and you are up high already then you welding 4mm+?

if wire speed it too high it'll start pushing you away.

i think you should just start at the lowest settings and play with them all to get used to mig.

as above you can buy a flow meter to check gas levels... useful if you plan on doing it a bit to save cash. also remember the wind will blow the shielding away

trax · Jun 12, 2015

also i'm sure you know about Welding - The DIY Guide

D90mitch · Jun 12, 2015

Yes, cheers

I will do that then start at the bottom and work my way up. I have a flow meter already and is handy as you say. I'll have another bash tomorrow and see how I get on. me CO2 only cost a fiver so not too fussed

. Will be a bit more careful when I'm on the good stuff haha

Thanks.

D90mitch

Well-Known Member

trax

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D90mitch

Well-Known Member

owl

Well-Known Member

trax

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trax

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D90mitch

Well-Known Member

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