good deal. I have had my handler 120 for over 25 years now.
rule #1 protection
rule #2 good ventilation
rule #3 NEVER NEVER weld anything cleaned with carb/brake cleaner. (when Tetrachloroethylene is exposed with excessive heat and argon (used in MIG and TIG welding) it also produces Hydrogen Chloride and phosgene).
rules #3 always check our welding area 20-30 minutes after you finished to make sure there are no smoldering fires for the sparks or droppings.
rule #4 grinding debris seems to leave the disc in a liquid state, it melts into and pits anything it hits. windows, vinyl siding, garage doors, paint, always be aware of the debris field, i have had to replaced at least one windshield in resent years. (i thought it was far enough away But, i was wrong).