I am using a micro processer controlled Miller 250. I plan to plug weld a floor into my old car, and have drilled 3/16" holes to do so. The base metal is 12 gage, and the floor is approximately .038" thick (20 ga?).
With this machine, and the tip I have for plug welding, I am told to just hold it stationary in the middle of the hole, pull the trigger and the puddle fills/penetrates and flows to the outside perimeter of the hole. The problem is the machine does not specify the time required for this, and has to be set manually. The trigger would just cut the power based on the setting.
Has anyone done it this way with the stationary tip and holding it in place? I tried it and it seems to work but I really don't know how much time is too much. My concern is the weld strength vs. a circular patter with a standard tip.
My smaller Clarke 125 says to set it to D/4 for this thickness. Not sure which approach is best.
Thanks
With this machine, and the tip I have for plug welding, I am told to just hold it stationary in the middle of the hole, pull the trigger and the puddle fills/penetrates and flows to the outside perimeter of the hole. The problem is the machine does not specify the time required for this, and has to be set manually. The trigger would just cut the power based on the setting.
Has anyone done it this way with the stationary tip and holding it in place? I tried it and it seems to work but I really don't know how much time is too much. My concern is the weld strength vs. a circular patter with a standard tip.
My smaller Clarke 125 says to set it to D/4 for this thickness. Not sure which approach is best.
Thanks
