Repairing Torn Bolt Holes on a Bumper Cover - Nitrogen Plastic Welder

This video demonstrates how to repair torn bolt holes on a bumper cover using a nitrogen plastic welder.

Always wear proper safety gear while working!

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Products Used:

Note: This is a list of the Polyvance products that can be used to make this repair. This list does not include sanders, grinders, or other common tools you will need. If you have any questions, please don't hesitate to call technical support at 800-633-3047.

• 1000 Super Prep Plastic Cleaner (several options available) OR 1001-4 EcoPrep Plastic Cleaner
• Aluminum Body Tape (several options available)
• Nitrogen Plastic Welder (several options available)
• Welding Rod (Note: Choose the rod that matches the plastic you need for your repair. If you aren't sure which rod you need, visit our Plastic Identification page.)
• 6145 Hand Seamer
• 6120 Straight Cutting Burr

Video Notes:

• English Closed Captions have been provided for this video. Click on the CC button to turn them on or off.
• The length of this video is in no way representative of the actual time required to perform a complete repair and therefore should not be used for estimating purposes.

English Transcript:

This video will demonstrate how to repair a torn bolt hole on a bumper cover. The first step to any quality repair is to clean the repair area. Remove some of the existing plastic so that the added material will not cause the tab to be too thick.

Use aluminum tape as a backing to support the melted plastic until the plastic cools and solidifies. Aluminum tape is very stiff and can withstand the welding heat. Aim the flow of air where the rod and bumper cover intersect. Be sure to melt both the rod and the existing plastic. After laying down some plastic, melt away the unneeded rod with the side of the welding tip. Soften the added material until it appears clear. Use a hand seamer tool to compress the melted plastic. This will reduce the amount of sanding and grinding needed later.

Use a rotary tool to remove any excess plastic and to contour the bolt hole. Remove the paint and some of the existing material with the sanding disc. Aim the flow of air where the rod and bumper cover intersect. Be sure to melt both the rod and the existing plastic. After laying down some plastic, melt away the unneeded rod with the side of the welding tip. While the plastic is still soft, use a hand seamer tool to compress the plastic.

Use a rotary tool with a straight cutting burr to remove excess plastic and to contour the bolt hole. Sand the repair until it matches the thickness and contour of the surrounding plastic. As you can see, this is a quality repair that saves you from having to buy a new bumper cover.