I laminated on another piece of meranti to the top making the total thickness about 7/16". I failed to get a picture of it because I was in too much of a hurry to get the skin down. Mostly the reason was that I grossly underestimated the amount of epoxy I would need, and had to mix new batchs.

In total, the seven square feet took 350cc of epoxy and 250cc of filler. I made this stuff a little runnier than the fillet mix to make it easier to spread. I spread out the mixture with a cheap v-notch trowel used for laying down linoleum adhesive, which worked perfectly.

Incidently, I now know what the red 'dye' in the hardener is for. I've been using the mixing cups that came with the epoxy kit rather than pumps for determining the ratio of resin to hardener. The inevitable happened and I mixed the epoxy I used on the sides fillet a little light. It took a few days, but fortunately it cured up hard enough. These fillets are dead white though. As the hardener was consumed, the red colour disappeared. If you look closely at the fillets in the previous image, you can see that they're already sort of a pink colour.

In this photo, you can see the cover all assembled, with the edges of the top sanded flush with the sides. A belt sander made quick work of that job.