First n foremost, cut out the subwoofer frames with rounded edge.

Decide on the slanting angle and stick on the support sticks with hot melt glue.

Now attach flexible cloth with staples. Here i use 2 layers of cloth for better strength.

Make sure the staples are stapled closely.

Alright, here i did lots of strecthing and stapling. Strecth n stretch, with strength.

Trim off the extra cloth on the unwanted side.

The entire faceplate is now wrapped up with the flexible cloth.

Make sure the cloth is stretched firmly.

Fasten a flat washer with a screw for the mounting hole later.

Washers at each edge of the faceplate.

Apply resin on the cloth. Make sure the resin damp the entire cloth.

Leave to dry. Drying time depends on how much resin catalyst (hardener) is used.

Once the resin harden the cloth, cut off the unwanted part, the center hole with a small blade.

Apply resin and lay the fiberglass sheets onto the surface and apply resin.

Leave to cure and repeat for another 2 layers. Until it is hard enough to sustain the bass vibration.

Here i grind the surface with a disc grinder with sandpaper fitted.

The first step of grinding is a very coarse grinding.

Now i use 100 grit sandpaper to get a smoother finishing.

Surface cleaned with an air gun and ready for putty.

Look what the grinder has done to the surface. That's pretty ugly huh?

Putty applied, leave to dry and start sanding again.

Sand with 100 grit sandpaper. Until it is smooth.

In order to make the uneveness more visible, I sprayed a layer of primer paint on the surface.

Locate the screws that hold the washers.