High build welds

[Superbad]

I always accepted that it is the norm for the high build welds on my SIP migmate 150. I am using pure CO2,and I get this result

I've looked at the tutorial section
http://www.mig-welding.co.uk/wire-speed.htm
I don't get the correct fuzz. The wire speed dial is turn down to zero

The far left high/low switch is set to low as it comes out too fast. Middle switch to Max and far right to Med
Do I have the reel tensioner correct?

 

[Shox Dr]

Wheel tension only needs to stop the reel from continuing to spin when you release the trigger.

As for the welding, how big is that piece, welds are way too cold

 

[R Kraft]

The slower the wire feed, the lower the amps the machine puts out.
Does it work the way it should on 2mm or so thickness ?
It takes 40 amps of power of power for every 1mm of thickness.
For instance you would need 400 Amps for 10mm,at room temperature,for a single pass fusion.
The only way around that is to preheat the piece to at least 100C or more.
Robert

 

[Sean]

spring on the wire spool, I put the spring between the nut and the plain washer rather than the spring biting into the palstic.

Sean

 

[Superbad]

As for the welding, how big is that piece

It is 10mm thick,about 5x3 inches

Does it work the way it should on 2mm or so thickness ?

So-so,still too fast

spring on the wire spool, I put the spring between the nut and the plain washer rather than the spring biting into the palstic.

there is a washer on both of the spring,the photo doesn't help

 

[Sean]

the reel doesn’t look right its hard to say what’s going on but it doesnt look right!
the spring should be over the plain shaft and sit under the knurled nut the spring shouldnt be coil bound.
have you had a scoot through the mods section?
there is a trim pot on the little circuit board its a blackbox with a tiny little white screw slot in the middle try ajusting it so the wire just creeps out with the dial on the front of the machine set to lowest speed

Sean