Repairing High Density MDF Cabinet Doors With Bondo

Mechanics traditionally use Bondo to repair fiberglass and perform other auto body work. Using this to repair high density MDF is an option that isn’t as strong as epoxy wood fillers, but it will work to temporarily hold the MDF together without costing too much money. Don’t use this process if you are repairing MDF that needs to withstand weathering for a long time as it will generally pop out of the joint or nick after a few years.

Toothbrush
Screwdriver
Hair dryer
Spatula

Instructions

- 1
  Brush the repair area with a dry toothbrush to remove as much of the dirt as possible. If the area has wood rot, scrape out as much of the rot as you can with a screwdriver and then brush it thoroughly to remove the residue.
- 2
  Dry the area thoroughly with a hair dryer if the wood had wood rot and was wet. Don’t ever apply any wood filler to wet wood as this will slow the curing process and damage the joint.
- 3
  Spread Bondo over the nicked or depressed area. Flatten the surface of the Bondo but allow it to dry slightly above the flat surface. This will give you more Bondo to work with to help you thoroughly smooth out the area.
- 4
  Let the Bondo dry completely for 10 to 30 minutes depending on how much you applied. The Bondo should be dry and hard to the touch.
- 5
  Sand the area with 200-grit sandpaper until it is completely smooth and flush with the rest of the wood surface.

How to Make a Four-by-Four Wood Shelf for a Closet

How to Save Money Using Resin Countertops

Carpentry