Sorry Doc for not giving you a qwick reply been busy with the trailer. As for work I use a foot pedal on the tig welder I use at work.I do not have a foot pedal On the tig welder I have at home, It has a dial wheel I control with my finger.I have grown fond of my finger tip control,I can weld in any position and not worry about having to push on a foot pedel.
I use this setup for buttwelds I bought the air cooled wp9 smaller torch head to have better control and use the 20 series torch cup,collet gas lens,and back cap
I use this set up for fillet welds its a #7 aluma cup for aluminum,I like it for getting into tight weld areas.
If you want to weld some titanium you can go with a set up like this and run a trailing cup behind it.
Ok back to your question's a whole lot of things are coming into play foot pedal control, torch movement speed, wire feed being applied for amps being used to melt weld joint. I will start my torch soft and apply amps as needed to melt the weld joint, if I see my weld puddle start to grow back off the pedal ever so slightly. Doc how is your filler rod feeding can to feed a whole rod length with your left hand without stopping? if not you need to practice feeding rod. You will never have puddle control if your struggling to apply filler rod to your weld joint. If you see your weld puddle getting out of control yes just stop back your torch up and restart ,you control the heat and filler rod it does not control you like mig you pull the trigger you better get moving. Try this get two pieces of 1/8 inch mild steel sheet metal make a key hole or gap the two base metals about 1/16 set your tig welder around 50 amps or more tack weld the top and bottom ends don't worry about the back side it will be burnt because of no gas back up. The moment you start your torch full pedal it to the ground, and start adding filler rod this will teach you torch travel speed to hot speed up your movement speed to cold slow down your movement speed and add filler rod based on your movement speed. Doc get your garage set up I can stop by and give you some pointers. John here are some more tips torch angle, tungsten stick out, how close your are holding your torch to work piece to high a wider arc will happen. Everything will have to come into play to have a consisted weld bead from start to finish. Best tip mild steel is dirty you will need to clean it like you are going into surgery, I even acetone my weld joint before welding them. Also you can runs beads on a flat sheet stock over and over until you want to joy puke to find your happy medium.
Where did you learn to weld? This is great knowledge.
All times are GMT - 7 Hours