pitting

[KPOBRIEN]

when i am welding a joint or a straight line it seem that in the direct center of each coil there seams to be a hole will get picts tomorrow and put them up why does this happen
millermatic 130 with 75/25 argon / carbon gas with .23 wire

[fun4now]

gas flow ?

what is your gas flow set at? if you dont have enough flow or it is windy enough to blow the gas away you will get a bad bead.not fully cleand metal can also cause pit's.

you left out some needed info for a god diagnocise

gas flow rate ?
settings on the MM130?
type of metal?
thickness?

pic's would help greatly also , looking forward to the pic's.

[Blown S-10]

contamination ?