The very first problem we faced was when went to sift through the worms. The previous day we moved the worms and their soil from the old worm bin and kept them in plastic tubs overnight. We were told that the worms would burrow to the bottom of the bins where it would be moist and dark overnight, making our job the next day easier. The day after when we went to separate the worms from their castings, to our surprise, the worms had crawled up the sides instead of burrowing to the bottom. It was a mess; the majority of the worms were up at the rim of the tubs and falling out onto the ground when we opened them. Some of the worms crawled between the lid and the rim and were crushed. The rest of the worms that were not slipping out were mixed up in the detritus, making it more difficult to sort them out.
After some thought, it wasn’t hard to determine which factors contributed to the problem. Not only was the soil not moist enough, but we stupidly didn’t think to add air holes; the worms were suffocating. We later learned that worms also crawl up the sides of the bin sometimes without reason; a good solution for this problem is to have a light over the bin to drive the worms towards the bottom.
Aside from fiberglass splinters, the only other big problem we had was fixing the insolation pads to the undersides of the lids. Allison and I spent an afternoon gluing them to the lids with liquid nails and then finding rocks to hold them down. It looked good when we finished, but in the morning the pads fell right off. We finally solved the problem by reversing the pads so that the fiberglass sides were pressed to the wood and then we bolted them down.