we do some plastic minor repairs at work,v out the crack,use a butane torch/soldering iron and melt the same type of plastic over the crack working along the length of the damage it will drip in and slowly fill it with out warping the original catcher.(be careful the fumes are strong).
the other way we do it is to put some of the plastic in paint thinners and leave it until it turns to jelly,scoop out onto the vee'd out crack and let it dry
both of these methods are good for cosmetic repairs , i am still using a tool box everyday i did this to 18 months ago
