How do you seal and paint MDF edges?

Thereof, do I need to seal MDF before painting?

The cut edges of MDF are especially porous, so you need to pay particular attention to sealing these areas. You should always apply two to three coats of primer before you attempt to paint MDF. In between coats of primer, it is a good idea to lightly sand the surface.

Also Know, is sanding MDF dangerous? Let me start off by saying yes, you should avoid breathing MDF dust. Formaldehyde is suspected of being a carcinogen, and MDF has some of the highest concentration of urea-formaldehyde adhesives out of all the engineered wood products that use it.

Secondly, how do you seal plywood edges for painting?

How to Paint Plywood Edges

1. Sand. After cutting your plywood pieces, the first step is to sand with 120 grit sandpaper.
2. Prime. Next, prime all sides of the plywood.
3. Wood Filler. Use a plastic putty knife to smooth wood filler along all of the plywood edges.
4. Sand and Fill Again.
5. Paint.
6. Finial Touches.

How do I get a smooth finish on MDF?

New Member. its the routered edges that 'fur' when you put the mdf primer paint on it. What you do is prime, lightly sand to remove the fur, and prime again. After that, you really need to spray it to get a super smooth finish, as thats what the factory ones are finished with.