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The harbor freight plastic welders are kinda hit and miss. I like the idea of the little solder iron sized cheapy that they have but it sounds like the tip has a problem of breaking off. I also see that style of plastic welder from time to time that has a little plastic rod feeder port. This allow you to melt the object material, melt and inject plastic rod directly into the weld and also smooth the weld on one pass. Very cool. HF sells packages of various plastic rods for like $5. I think the rods are for pvc,abs and polypro and come like 50 to a pack.
My thought is to modify an old Weller style soldering gun to do this. I don't know much about these other than the tip heats up. Is it an actual heater element like a stove or can I just cut the tip off and build my own tip? Any help would be appreciated. What should the tip be made out of?
Has this been tried already? I know Weller also has rope cutting tips that could be useful. I just didn't see a plastic welding tip.
Help point me in the right direction. Thanks Eric.
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