The other day, I noticed that the Bondo fiberglass stuff was setting up before I'd finished applying it. So yesterday I decided to add less hardener. It worked - I was able to apply all of it before it hardened. Unfortunately, it has yet to harden. So this morning when I started sanding the exterior, the sanding pads immediately got gunked up.
So I finished up the left fender instead. I sanded down the filler, and then sprayed it with self-etching primer, gloss black, and bedliner. Then I put the wheel back on so that I could level the trailer to draw the lines where the kitchen countertop will go. All of these steps are intertwined, just like a home renovation. How annoying. Anyway, I decided that I couldn't do much work on the countertop without the doors in place and without the 12v cooler (so I'd know how much space to leave to open the split cooler door). I later ordered the cooler online. And a whole gallon of the Bondo crap. I swear I could build a whole trailer out of the stuff. It's lucky that I'm not an auto-body guy - I'd probably make whole fenders with it.
Then I set the add-on portions of the side walls into the frame extensions with big bolts, which of course pulled everything out of alignment. I did some more planing of the plexiglass mating surface and then the other part of the top. There wasn't much else to do while the filler dried (I hope it dries), so I built the rear roof panel. I opted to set it between and not on top of the walls simply to keep the clearance such that the trailer will fit in the garage (rain is coming again). In the photo, you can see that I forgot to put 12v wiring in the panel for the galley and cabin lights. I actually ended up taking out some screws and adding that later. The wires to the battery are just hanging loose, so I'll have to find a way to recess those later.
I was going to finish this part of the roof in fiberglass panel, but I think I'm going to use some of the rubber pond liner I have around instead. It's just too tempting to use something that I have already, and I'm encouraged by tales of success on TNTTT. Plus the price is right. I might get a paycheck this month, but it's likely to be two digits

To wrap things up, I ripped a bunch of fancy ($7) 2x4s and laid them all out for a sort of butcher-block kitchen counter. I glued them all together, piled a bunch of heavy stuff on top, and clamped it all up. With luck it'll come out good enough to finish all nice and smooth and epoxy the heck out of it. The sink and faucet are ready to go and looking good, so it would be nice to set them in. I can also probably cut out more diamond plate for the bottom/sides. I just can't rivet them on yet before insulating a little space between the fender and the floor. I literally couldn't sleep last night thinking of little critters burrowing into the insulation in the floor. If I didn't have this project, I guess I'd have to worry about real problems.
On that note, I think I'm done for the week - after walking around the motorcycles about 1,000 times this week, I feel like taking a long motorcycle ride tomorrow.