welding

I was thinking of making a welder that uses a capacitor bank, and does stick welding (STAW). How would I go about doing this? Any other ideas for homemade welders? A small desktop welder?

sort by: active | newest | oldest
sbrown16 years ago
Things you should keep in mind: Previously you strike an arc. It is essential that you be competently dressed for welding. You have a welding helmet to safeguard your eyes from the ultraviolet rays and to preserve sparks from gaining into your hair. Fire retardant hats are a very good thought, as well. You can get them from welding provide houses. You also desire gloves to secure your pores and skin from arc sunburn and welding spatter. Leather aprons and leather boots retain welding spatter from gaining to your pores and skin. And recall to weld only in perfectly ventilated places. Welding may make choking, dusty smoke. Study the guidelines and warnings on the labels of welding supplies and devices. Striking and keeping the arc. Striking an arc is not complex. With your helmet up, placement your electrode about one/four inch absent from the place you want to get started with welding. Decrease your helmet and make a effective jab with the electrode. Be observing for the arc. Be ready to pull the electrode absent Somewhat. Quite shortly you will have to bit by bit transfer the electrode into the weld as it melts off rather quickly into the weld pool. Laying a bead. A correctly preserved arc helps make a hissing, crackling sound as the electrode burns. Holding the arc as well much away can make alot more buzzing and spattering. Keeping the arc to shut can make the rod overheat and typically stick to the deliver the results. It is necessary in laying a bead to preserve the electrode relocating into the weld pool as you move along. Horizontal beads are the fastest. With vertical beads, it is the fastest to give good results from the best down. When welding prolonged beads, it is very important to tack weld every single 6" to hold the job from warping. For instance, if you are welding a metal box with each other, tack the complete box collectively and then go back and lay the beads reliable. If you never, the entire mess will be so warped out of form following the number one two seams you won't be ready to complete the other welds. Last but not least, try to remember that welding is a thing that usually requires apply. You can't study it from a manual. You must invest some time just laying beads and experimenting. Try welding bicycle frames. The challenge right here is to make wonderful welds without burning through the metal. I've found you can lower bicycle frames and other thin metal sections with a great welding rod on higher amperage. Welding experience, but nevertheless, is past the scope of this manual. Go to the library and get some publications on welding. Use them to guidebook your progress as you apply.
LinuxH4x0r (author) 9 years ago
Thanks guys! I think I'll try the "tiny tim" welder Idea. I mostly need small spot welds, and i don't want to mess around too much. I'll post my results. Thanks
John Smith9 years ago
Or this.
jtobako jtobako9 years ago
Or this...
jtobako9 years ago
Capacitor banks would be more appropriate for spot welding-they take time to charge up before a high energy discharge so aren't very useful for continuous current draw. A small inductance (coil) welder would be possible, stepping down voltage and up current, but I don't know if you have to rectify (ac to dc) the current to get a good weld pattern. I have a small resistance stick welder, haven't played with it enough to get it to work but it's a coil of resister wire hooked directly up to main current (120v ac)-not sure of what the values are, but the resistance is there to cut down on a direct short to prevent blowing a fuse : ) Most of the welders I've seen have started out with microwave transformers, removing the high voltage windings and putting in heavy wire to handle high current and low voltage. Some were used TIG style, some stick (usually with more than one transformer).
Lftndbt9 years ago
12v Car battery charger's are great for lil' spot weld's.... haven't used one for and extended period though...