Casein (from Latin caseus, "cheese") is a milk protein which we widely consume in various forms such as cheese and as a food additives. An interesting anecdote in the story of Caseins is that it was a popular ingredient for making some of the earliest plastics called Casein plastics. For a very brief period of time, casein was a popular material in fountain pen manufacturing. This was in early 1920's when it was the only plastic that could be coloured. With the advent of celluloid which was a superior type of plastic, casein quickly fell out of favour. Pens made of casein are quite rare and I have never seen an Indian pen made out of this material.
So when Vince Coates (http://theturnersworkshop.co.uk) made available some casein material, a bunch of us quickly seized the opportunity to get some unique pens done. The material we received was supposedly the same used by Conway Stewart in their brief sojourn of using Casein and hence we naturally opted for getting a few Azaadis made with these imported blanks.
Below are the pictures of the ASA Azaadi made of Casein and also a side by side picture with it's cousin made with normal celluloid acetate. We did not use any rings on this pen since the material was considered too soft to attempt the heat setting method of inserting rings. Also the surface was kept largely untreated (except applying emery paper) in order to retain and exhibit the natural characteristics and property of the material.
Hope you guys liked the pictures. Should you8 guys wish to read my review of the ASA Azaadi, then please click here.