Patching a HDPE water tank

[circus]

Twenty years ago I had a hot air plastic welder, like in the picture, used it twice and it shorted out. Expensive junk. Sprung a leak in the water tank recently. Cut a strip of filler plastic using a heat gun and utility knife and used a $1 mini torch as a welder. Worked great. Does show, I was going for strength not looks. I'll let you know if it cracks.

 

[Ray,IN]

You likely already know to use the same type material to weld the tank.

 

[circus]

You likely already know to use the same type material to weld the tank.

Often there's a lip or edge, you can cut a strip from, on the project your repairing.