MDF Repair Question

[SlainbytheBrain]

I made a few mistakes with MDF today and was wondering if anyone has any good repair ideas. They are relatively minor.

On a top corner I hit the ceiling lifting one side panel onto another.

In the bottom corner (which will probably go against a wall anyway) I bent the MDF a bit by being too impatient to wait for someone to help me take it off the saw horses (which are plastic and have always taken every opportunity to collapse bizarrely).

 I'm open to suggestions. Thanks in advance!

[EvilNuff]

As a broad generalization your repair options are fill in cracks/gaps with a hardening substance such as Bondo...or removing some wood and replacing with whole wood and filling the gap between the two.  Either way your plan for how you want to finish the mdf might change the best option, paint, laminate, etc.  Either way its hard with mdf because you end up with a less structurally sound area of the wood.

[windmill]

I'd cut out a rectangle slightly larger than the damaged section, and replace it with a new piece of MDF. Just gluing in the piece isn't going to be strong enough, you'll need to use biscuits or dowels to reinforce the joint. If you don't have a biscuit joiner, a router with a slot cutting bit will also work. Then fill any remaining gaps with wood filler/ Bondo.

You could try using a filler like Bondo alone , but the damage on the bottom piece looks a bit too severe for that.