I want to fiberglass an existing MDF enclosure.
I have a bit of experience with fiberglass but wanted to do a double check to see if I am on the right page. I searched the forum and found a post where this was asked however the consensus was that the builder simply uses resin to get the visual effect desired after painting.
The primary reason I want to fiberglass my box is to make it waterproof (I do also want the visual effect as it sits in the engine compartment of my boat which sometimes gets wet, on the bottom.
Since my box is a brand new construction, I have perfectly smooth surfaces to work with and almost all 90 degree angles.
Ill lay down my plan and please let me know if I am missing anything.
1. Prepare and clean the surface.
2. Brush on the resin, lay the mat, brush on the resin. (I may use the method of cutting 4 inch wide strips. soaking them in resin and laying them, adequately rolling the excess and bubbles out)
3. Sand, sand, sand. I don’t think I will need to use much if any filler as the original surface was so smooth.
4. Paint and finish. (I think I will actually use gel coat as I have found it easy to sand and shine
The things that I am unsure about are:
1. Would it be good to cut a smaller diameter hole for the speaker and the ports so I can lay the fiberglass strips inside the holes to ensure a smooth finish, later enlarging the holes to the proper size and smoothing the edges?
2. Should I lay more than one layer down or will a single layer serve my purposes?
3. Finally, can anyone see any reason not to use gel coat? The reason I was planning on this is because from what I understand, all of the color is mixed in the coat and will come to full gloss when wet sanded and buffed correctly.
Thanks so much for any feedback.