From: null@void.com   
      
   "Jim Wilkins"  writes:   
      
   > "Richard Smith"  wrote in message news:m134g9ve4k.fsf@void.com...   
   >   
   > Jim - You'd more avoid positional welding with solid-wire GMAW.  You'd   
   > want to turn the work much more than with "stick" (SMAW) where   
   > vertical-up welds are very doable.  Different prep. angles?  You'd have   
   > to ask someone more streetwise than me...   
   >   
   > ---------------------------------   
   > Almost my only use for my little MIG has been patching rust holes in   
   > fenders, which I usually want to remain vertical. The exception was   
   > plug welds in spotweld cutter holes to attach a replacement radiator   
   > support.   
   >   
   > In night school I practiced vertical up with solid wire MIG on their   
   > big Miller. I could do it but no one would hire me to.   
      
   Bob gets there first - pretty vertical-up MIG isn't easy.   
   I got asked to do them even as the agency temp. because although not   
   pretty they were vertical-up and it was obvious you could trust your life on   
   them.   
      
   BTW MIG vertical-up - initial set by getting a good bead-on-plate weld   
   on 3mm plate / thick sheet "on the flat" - see correct bead formation   
   and heat patina on the rear face - then you will be very close to the   
   correct condition for v-up MIG on thick plate.   
      
   Straight to v-up on thk plt with unknown MIG machien with no Amps and   
   Volts revealed is too many variables...  2 steps 3mm plt on-flat then   
   try v-up and fine-tune is much more controlled and keeps things   
   "tighter-in" on a planned path.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)