Quote: Originally Posted by
Minoritydan 
Did you buy any of their epoxy products to do what was discussed in this thread, for filling in the gaps and reinforcing with the mesh/epoxy mix?
No, I didn't buy anything else. Epoxy and polyethylene don't bond, so all my work has been in polyethylene alone. Before I bought the welder, I called Urethane Supply, explained what I was doing, and asked their advice. They were clear, thorough, and spot on. After that conversation, I wouldn't have bought from anyone else, even if the other guys had been cheaper.
I use the mesh by pressing it into the joint while it's molten. The welding process does take some getting used to, so plan to practice for a while. When your joints are good and strong, and you're comfortable, go to work on the parts you're making.
Be aware that you'll have to do this outside -- the
fumes are toxic. But a good fan or two (I use two) will carry the smoke away from you.
The results with the KC Welder Pro have been very good, once I got away from making half-a$$ed joints that weren't heated all the way through. Cold joints break with flexure, but good hot joints seem as strong as the parent material. I've even been able make a relatively smooth face on the areas to reduce the amount of sanding and filling that will be required.
You can see from
turbocad6's work that plastic welding can produce quite professional results. I guess that makes good sense, since he's a professional. He gives us -- the amateurs -- something to shoot for.
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