How To Prepare A Cracked Plastic Auto Body Part For Reparation

This video will show you how to prepare a cracked plastic auto body part for reparation.

TOOLS NEEDED:

  • Heat gun
  • Drill with a 1/8 bit
  • Carbide bit die grinder
  • Small grinder with P80 sandpaper disc
  • Sander with P80/P120 sandpaper

 

INSTRUCTIONS:

  1. Clean damaged area with soap and warm water. Dry with a clean, dry cloth.
  2. Heat the damaged area with the heat gun to facilitate repositioning.
    *Caution not to overheat.*
  3. Reposition the tear in order to have a level surface.
  4. Limit the tear by drilling 2-3mm holes with a 1/8 drill bit at each end of the tear.
  5. Make a V-groove along the tear using a carbide bit die grinder… on both sides.
  6. Using a small grinder, widen the bevel around the tear.
  7. Do the same step for the inside.
  8. Sand using a P80/P120 (bare plastic, 5cm to 8cm around the tear.
  9. Repeat for the inside.
  10. Wash with a panel prep or with a dry and clean cloth.
  11. For plastic soldering, apply aluminum tape to the outside and for epoxy gluing apply a regular tape.
  12. The tape keeps both surfaces level when manipulated.
  13. Now you are good to repair the bumper by plastic welding or by using epoxy.
  14. That’s it!

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