Plasic weld it... sand it with dremel and smooth it... then it will be good to go.
Basically Cut a zig zag in the crack... Heat, Melt plastic into the crack by torch or by woodburning tool and keep heated with heatgun... let dry/cool. Sand it, do it again (without the cuts) and then smooth it with dremel and should be good to go if you use the right plastics.
All of you are ghetto! USE DUCT TAPE!