hiya
 Im a plastics engineer by trade and yes you are correct almost no glue will
adhere to HDPE or PP (polypropolene) do you know which one it is ? I once
saw topper dingies being moulded on 6000 ton machines and i think they were
PP.
 Anyway, welding is the way to go, epoxy is just silly. Most good auto
bodyshops have plastic welding gear for the repair of car bumpers (
fenders ) most car bumpers are ABS though so they may have to order in some
filler rod to do your job , Just ask

fragged

"Ignoramus32317" <ignoramus32317@NOSPAM.32317.invalid> wrote in message
news:bhumb3$jeb$4@pita.alt.net...
> In addition to my 21 ft boat, I recently found a 4x8 plastic boat that
> someone put out as garbage. It is kind of doublehulled and seems to be
> made of high density polyethylene (HDPE), like plastic buckets. I am
> delighted because I can use this boat on some little lakes nearby.
>
> It seems super safe (double hull) and super stable.
>
> It does have however a few small cracks in the hull that need
> repair. What is the right way to repair HDPE? Can I use glue guns with
> hot melt glue?
>
> i