Hi, I have built my coop and am now a little bit stuck on how to design and construct the pop hole. The coop itself is made out of a plastic outdoor storage shed type thing. I think maybe they are designed for storing bicycles. My problems is that the main door (which I will open up to clean it out) and which the pop hole is to be cut out of is slightly convex so I wouldn't be able to use the basic up and down sliding door as it wouldnt work (there is also some moulding on the inside of the door, I presume to strengthen it so this would also make this type of door no good as well. It won't be easy to attach hinges as I dont think screws would hold in the thin plastic material the whole thing is constructed from. I only have a very basic and limited amount of DIY tools available to me. The best (if you can call it that!) ideas I have come up with is to cut a hole and use cable ties/zip ties as hinges and two little hooks, one to hold it back when open and one to fasten it when it is closed. Should I put the hinges at the top or the side? How big does the hole itself need to be? I have got all large fowl, 1 of which is a Brahma Many many thanks in anticipation of any help at all. Pop door will be cut on the door on the left so it is level with the ladder.