Hi,

I am totally new to woodworking and I am thinking of building an
inexpensive wall cabinet out of cheap MDF boards. My questions a

1. Is MDF boards strong enough to be used in a wall cabinet ? Can it
even hold it's own weight ? Or should I add some real lumbar as
reinforcements ?

2. What is a easy way to join boards at right angle ? Can I simply use
screws / gule and wood filler to patch the hole ?

3. When you paint the boards, do you need to use a primer first ?

Thanks in advance for your advise.

JW