Allturn Plastic Welder, 2 in 1 Plastic Welding Kit, Hot Staples Weld Gun, Car Bumper Repair Kit for Most Plastics, Patent Number D970324(Yellow)

Allturn Plastic Welder, 2 in 1 Plastic Welding Kit, Hot Staples Weld Gun, Car Bumper Repair Kit for Most Plastics, Patent Number D970324(Yellow)

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CluelessKnow-It-all posted on r/askengineers1w

First drill holes at both ends of the crack to keep it from spreading. Get a hot staple gun and use it to reinforce the crack. After you've done that use a plastic welder to seal it up.