I agree that it would be good to use stainless steel if you don't want to have to inspect the wire. However, if you are building it yourself using my Instructable you are going to get intimately acquainted with the wire anyway, so it isn't too hard to pick away loose metal splatters. Once you have done that it is just as safe as stainless steel. If your bird bites down and actually chews on any metal wire it is not normal behavior. Curious is one thing but that is abnormal. They will chew on the wood parts of the avairy (but it would take decades to do enough chewing to actually bite through any of them - in which case you simply replace it). There is nothing in the aviary that they can't eat. In fact, I expect them to try to eat anything I put in there. I always put cardboard boxes in there (I am surprised I haven't had to have the big long argument about boxes yet. let me explain before that starts that I don't use ones with paint on them.) You can put all the plastic you want in there and they will only try to chew it until they see it is pointless. They only chew things that they can shred. That is the point. They aren't interested in eating their toys, only destroying them. They can't shred up the metal wire and hence they won't chew on it. Ever. Period. I don't even buy fancy toys anymore. My conures get bored with them far too quickly. Boxes and other easily shredable things are better (and cheaper!). I put treats inside so that once they manage to rip a hole in the side they are rewarded with a treat. I also have many different bowls containing all kinds of foods in addition to store bought parrot food. They love peanuts in the shell (unsalted preferably but salted won't kill them either unless that is all you ever feed them 24/7) sunflower seeds in the shell too (again don't jump up and down freaking out about how "we're all gonna die!" if they are salted. Just make sure they don't gorge themselves on them all the time) they have lots of fresh fruit (bananas, chopped apples, etc. alternated each day) lots of different kinds of nuts and bird seeds. They like pieces of bread or toast. They love peanut butter. The options are endless. I change their water two or three times a day when I remember to, but there is so much water in their aviary that there is always clean stuff somewhere even if you forgot to change it one day. I wash all the bowls ever few days but I only clean the cage once every couple of weeks or more. I just wrap up the huge piece of packing paper lining the floor and discard it, then roll out another sheet from the big roll I have. I takes 5 minutes. A roll of paper lasts a couple of years or more. I could go on and on giving tips and stuff that saves time and money and results in a happy bird. They love 80's rock. Sometimes I download jungle sounds and play that as background music. I have a decent sized Ornithology textbook library by now and some are quite fascinating to read although fairly technical. Parrots are very much like children. There are many dangers but don't be such a neurotic parent that your kid is a head case shut-in. Like I said before don't stop taking your kid fishing because you are scared they will swallow a lead weight - instead, just keep the weights out of site.