Now that it’s all glassed on the inside I brake out the mouse sander and smooth out all the cracks until there alittle smooth and not sharp protruding edges. Next I use automotive light weight bondo to fill all the cracks this is good filler and very light it in the light blue can at Walmart it has a blue hardner. To spread the bondo I have found that a deck of playing cards work great. Next strip all the paint off the fuse, this is easy just use automotive paint stripper that comes in the spray type can, I recommend this type of stipper because it sprays evenly and it only takes 3 to 5 minutes to bubble up the paint then use a plastic card to scrape it off takes very little pressure to remove the paint. Oh remmeber to do it in sections when you removing paint.