Taz Posted April 1, 2015 Share Posted April 1, 2015 Has anyone got any advice on welding Plastic. I have a Heat gun and about 3/8th adapter. Also have Large heating Irons. Thought I'd practice on a garbage can before I try to do my Pelican case. Quote Link to comment Share on other sites More sharing options...
JJkizak Posted April 1, 2015 Share Posted April 1, 2015 (edited) Best of luck. Isn't it easier to buy a new one? JJK Edited April 1, 2015 by JJKIZAK Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted April 1, 2015 Share Posted April 1, 2015 Surely you realize that Pelican cases have a lifetime guarantee against breakage, and that this is void if you alter it. Send it to them before you jury rig it and they'll fix or replace it for free. Quote Link to comment Share on other sites More sharing options...
Schu Posted April 1, 2015 Share Posted April 1, 2015 (edited) it's completely possible to weld plastic but I have never done it. I think MLO is correct, isn't pelican a lifetime warranty company? Edited April 1, 2015 by Schu Quote Link to comment Share on other sites More sharing options...
Quiet_Hollow Posted April 1, 2015 Share Posted April 1, 2015 (edited) Yup. The owner has to cover shipping though, which for some of the larger sizes can become a cost factor. There are two-part adhesive kits out there that will bond it no doubt, but the problem is that the larger Pelican cases are made using Polypropylene with a higher percent of rubber toughener. Edited April 2, 2015 by Quiet_Hollow Quote Link to comment Share on other sites More sharing options...
oscarsear Posted April 2, 2015 Share Posted April 2, 2015 Industrially plastics are welded using ultrasonic contact transducers. Quote Link to comment Share on other sites More sharing options...
Karsoncookie Posted April 2, 2015 Share Posted April 2, 2015 Some plastics are readily "weldible", other types, not at all. I thought it interesting years ago when I ordered some large polyethylene tanks for a custom RV, they would "Spin Weld" on the fittings. Friction heat bonding, just plain melting together. Just plastic tank to fitting and friction. No adhesive, no solvents, nothing added to the joint. All plastics different. Lars Quote Link to comment Share on other sites More sharing options...
Taz Posted April 3, 2015 Author Share Posted April 3, 2015 Best of luck. Isn't it easier to buy a new one? JJK Around $500 for new case. Surely you realize that Pelican cases have a lifetime guarantee against breakage, and that this is void if you alter it. Send it to them before you jury rig it and they'll fix or replace it for free. Nope. I was not aware of lifetime guarantee. $70 shipping both ways but looks like the way to go. Thanks All. Quote Link to comment Share on other sites More sharing options...
Gilbert Posted April 3, 2015 Share Posted April 3, 2015 (edited) Some plastics are readily "weldible", other types, not at all. I thought it interesting years ago when I ordered some large polyethylene tanks for a custom RV, they would "Spin Weld" on the fittings. Friction heat bonding, just plain melting together. Just plastic tank to fitting and friction. No adhesive, no solvents, nothing added to the joint. All plastics different. Lars This is correct, based on what I've heard, the non-weldable become brittle. I spec a lot of plastic liners for secondary containment systems beneath AST's (above ground steel tanks), They come in various thicknesses, but 40 to 80 mil are quite popular. They deliver it to the site in large rolls, and the sheets are welded together in the field. I've seen a couple of different ways to weld plastic, it's pretty interesting stuff the way contractors lay it out. Edited April 3, 2015 by Gilbert Quote Link to comment Share on other sites More sharing options...
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