Plastic Bonder has a 1:1 mixing ratio, sets in 15 minutes and can be sanded after 30 minutes. J-B Weld Plastic Bonder Syringe. GAP FILLER - Ideal gap filler for plastics and composites. PlasticBonder has a 1:1 mixing ratio, sets in 15 minutes and can be sanded after 30 minutes.
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