I thought I'd try a cyanotype on glass; this only came about as I wanted to try pouring emulsion on to glass after subbing it with gelatin. In the end, I had some cyanotype solution left over from some printing and figured I use that instead of the standard emulsion.
Unfortunately, I didn't have any chrome alum, and I only had food grade gelatin, but as this was just a practice piece I figured I'd have a go anyway! Here's the result from that experiment...
I've since ordered some photographic-grade gelatin and chrome alum, and the experiment was successful enough to make me want to do some more experimentation. I've also subbed a glass plate with some arrowroot instead of gelatin, to see what happens with that.
Has anyone else had experience of cyanotype on glass?