ok
I think I got all the pertinent info and pics in my gallery under "plastic, HDPE, welding"......I'm not sure how to put the link to the gallery here, sorry......
My friend is laughing hysterically, reading my text, knowing the brand/model of my machine, and, using his imagination on the pics......
You can be the judge.....I think he's twisted......hahaha
anyway,
I'm not sure if I need to or can post more details at to the techniques I sort of developed doing this, I think I got most of it in the text of the photos.
I'm sorry, I think the order is somewhat mixed up, but, it's all there.......
I hope this can be of help to someone.......
I did note a few things:
HDPE will burn quite well if you don't pay close attention while using a torch to braze........
it also blisters when sticking to skin........
I found a great source for HDPE:
plastic 5 gal buckets, at least the ones I have....it says "HDPE" on the bottom......worked great....I used a square one so I'd have flat pieces to work with, and, corners if needed. But, a regular round bucket would work just fine since I cut it in pretty narrow strips.
making the grooves and or seam welding seems to work best in short lines.
melt your groove, or, both materails to be joined with the tip, then, go back and fill before it cools. only an inch or two at a time seemed to work best.
That's all I can think of for now.
good luck
Henry