This is a way to make a head for a banjo on the cheap that I found whilst researching different ways to make homemade banjos. Originally I was using a cookie tin bottom cut out and place in with sheet metal screws. I found one guy that was using the p.e.t. plastic from soda bottles, but unfortunately, the world's soda producers seem to have quit selling those gigantic soda bottles, and the best I could get out of one would have been something like 8" tops. I did happen to have on hand some x-rays, which are mylar, just like banjo and drum heads, so I used those to experiment with. I also experimented with some HP paper that had a sort of mesh backing, that worked pretty well, but was again limited in size.
Step 1: Materials
Old x-ray sheet, or large soda bottle with the flat surface cut out, or similar mylar or p.e.t. plastic you may have around.
Crochet ring, ring cut from a cookie tin bottom, or about any other ring shaped object that will fit into your banjo's "pot" (mine is an aluminum wok pan).
Epoxy glue- the 2 ton type worked better than 5 minute.
(optional clip lamp with warm bulb to speed curing time, and stretch the material)
Please note that this is just something I did for a junky homemade job. I'm not too sure how well it would work installed on an actual banjo. Of course I've seen some pretty weird stuff work, including a U.S. mail envelope, so...