Matt@RFR... Mr Welder, Sir....

[Madspeed]

Hey Matt you said the grey is crystalization. Can you be more descriptive?
I have a lincoln precision tig 275
And i am workin with 120 wall chromolly tube atm, Im using small rod and a 1/16th ? tung @ 2% and about 95 to 99 amps ( I forget what the small size is) get awsome shinny tacks but when i go to weld the whole thing I tend to get a grey color in the bead and as best I can explain sometimes the bead looks like this * Like crystaline and grey
Some welds look UBER clean and shinny
I have thought it was a clean issue
I use an abrasive chop saw to cut the tube ( I am thinking its the dust inside thue tube from the cut)
I clean the other tube ith abrasive discs and my filler rod with a lintfree rag and brake cleaner (maybeee im wrong there)

I allso notice what would look like a glazed dot on som of the welds allmost like a black dot of glass ( I have a real good feeling its the abrasives actually turning to glass)
and yes I have the polarity correct =)
I can take pics if you like and pst tomorrow night

thanksin advance Ken F


I like to think I know it all but I dont so thats why I am here =)