Medium-density fibreboard
MDF
- Moisture
- Low tolerance
- Knocks
- Dents rather than chips
- Hinges
- Good, with the right inserts
- Cost
- Lower to middle
Wood fibres glued and pressed into a dense, uniform sheet. It machines beautifully, which is why it is the default core for painted shaker doors.
What it does well
- Smooth, paint-ready surface
- Stable in normal room humidity
- No grain to fight the profile
Where it bites
- Swelling is permanent once wet
- Hinges can loosen if the screw holes strip
- Heavy on wide doors