Are the condenser coils all on the back of the fridge or do they run through the skin? I've seen threads about people enlarging the hole where the compressor goes to the evaporator and routing through there. - Dwain
I also just drilled a hole in the back of my mini fridge... but I knew exactly where the coils were. I then just stuffed insulation foam around the tubing. You do not want to rupture a coil, as getting sprayed in the face by refrigerant is not fun.
From what I've read the coils on the Danby's are on the side of the fridge,not top or back.
Here are some links i have boookmarked that are tutorials for converting Danby into kegerators. OP has already done this but there's some other good background in there.