Plastic Welders - anybody have experience?

Tue, 31 Aug 2021 09:35:55 GMT

go to see Welding Machine for Plastic Welders - anybody have experience?

My black water tank on my motorhome is cracked. I'm thinking about trying to repair it and have found that the plastic welders range anywhere from HF $30 to others at $300. Though I don't know for sure what material the tank is made of (I'm thinking PP) I am looking for some advice. Obviously, I'd want the tank to be leak free and the weld probably wouldn't be under much load or pressure.  Any thoughts??Thanks for any help you could provide!Lincoln TIG 185 / MIG 200"Learning a bit more everyday"
Reply:I have several plastic welders, I was making fish filters for a while using polyethelyne barrels..I also welded pvc and some other plastics for repair. I bought a leister ( expensive) and the harbor unit with air supply built into it for about $75.00 a few years back. most plastic is marked what type it is, but if you google plastic welding theres a huge supply of info out thre..just like metal welding  CLEAN CLEAN the surfaces...
Reply:I'd sooner patch it with an epoxy adhesive.
Reply:I've considered epoxy adhesives but wasn't sure if it would "stick" to the tank. Thanks for the sugestion - I'll try a test patch to see if it works.Lincoln TIG 185 / MIG 200"Learning a bit more everyday"
Reply:i had a barbie plastic welder when i use to do radiator tank repair it works great just need to be really clean and beveled.
Reply:Just posted up about a week ago .....http://www.hobartwelders.com/weldtal...hlight=plastic
Reply:Hey jsfab - that was a useful link.  Who'd of thought that you could weld with a Dremel tool? That open up whole new possibilities for welding plastic - thanks!Rick V 1 Airco Heliwelder 3A/DDR3 CTC 70/90 amp Stick/Tig Inverters in Parallel1 Lincoln MIG PAK 151 Oxy-Acet
Reply:Well my project turned out pretty good. I ended up buying the harbor freight $60 dollar welder and had pretty good luck with it. I made the assumption that the tank was made out of ABS and used the appropriate filler. Roadkillbobb was dead on when he said that the surface had to be clean. I did a leak test after it was all welded up and had a few leaks. Rather than try and reweld I took Supe's suggestion of using an epoxy sealer over the top of the welded area. The second leak test was good and now I'm a happy camper! My only wish would have been that I would have seen jsfab's post about the friction weld technique - way cool!  Thanks for the help everyone!!Lincoln TIG 185 / MIG 200"Learning a bit more everyday"
Reply:yes, plastic welding takes skill , ABS and polypropylene plastic motorcycle parts = funFYI.........these r beautiful tools too........"DYNA WELD" is sik strong (my favorite) 3M is great too Attached Images        thermal arc 252i  -  millermatic 350P -   miller XMT, cp300ts, 30a 22a feeders, buttload of other millers, handfull of lincolns, couple of esabs  -   Hypertherm 1250 G3
Reply:eastwood has them go to there sitelook at item #14013 theres a video
Reply:Thanks for the tip on the Dyna Weld woi2ld - that stuff is awesome!!Lincoln TIG 185 / MIG 200"Learning a bit more everyday"
Reply:Originally Posted by C10nutThanks for the tip on the Dyna Weld woi2ld - that stuff is awesome!!