Fixing High Density Poly?

Are you sure it is HDPE, the only way of repairing HDPE properly is by welding.

You could try superglue or MEK Solvent (Methyl Ethyl Ketone) but doubt the long term ability.

plastic welding?

need special heat gun, but you should be able to find someone... Rasch Plastics might be a good start

Richard,
Is it a new tank? If it was I would be asking for a refung. If not plastic welding is the go. Talk to a few local panel shops or any motor bike repair shops(plastic weld farings).
Hope this helps.
Matt

Thanks everyone for your quick replies.

Bad news is that seeing I'm in Nhulunbuy NT, return to Queanbeyan NSW is probaly going to cost me more than what the tanks worth!

Good news though, just spoke to a Plastic Welding company in Darwin here, they have one of their blokes coming over in a months time to do some plastic pipe welding for the mining company.

Damn it's good to have a win every now and then. :-]

Richard

Howdy Richard,
i very much doubt that the tank will be high density polyethylene. It's most likely low to medium density as high density is very hard to mould. Those tanks are manufactured using a method called rotational moulding. A steel mould is filled with ground Polyethylene and then rotated in an oven on both axles. I have been making poly tanks for 6 years. Only way to fix it is to weld it with suitable welding rod and either a hot air gun or a welder called a "Drader" which works a bit like a soldering iron and injects molten plastic into the weld. No glue will ever stick to the stuff i am afraid.
Cheers, Udo