Thanks Peter, very helpful. Can I check, do you sand the charred edges, where the laser has burned the wood, or just prime them?Peter Butler wrote: ↑Wed Jul 29, 2020 9:38 pm Andrew, thanks for the comment, I do enjoy working with Jerry, he is so professional.
MDF has a bad press in some quarters; I prefer it to ply as there is no grain in the surface, which is always over scale and frequently running in the wrong direction.
For preparation I use a filler/primer (two coats) followed by light sanding, then several light top coats. Clear lacquer (gloss) followed by satin and/or matt lacquer to give a finish to your own preference.
Never, repeat.... never sand the MDF before applying paint or sealer as it only roughs the surface and absorbs paint etc. in patches.
I hope this helps.
Andrew.