Step by step we present a replica gas tank for the BMW R12-R16 and the more difficult R 35, is hand made from steel sheet metal, the buck is actually made from concrete, the shape was taken from an old busted BMW R35 gas tank wich I was lucky to have it in may hand years ago actually was really handy to have it.
if there will be a next time it will definitely come out much better, I learn some tricks in the making process, refigured the pattern, yeah I'm quite sure next time will be much easier.
Thanks buddy (https://www.facebook.com/rusu.c.bogdan) for your patience, your help, all the info, all the struggle, and manage somehow to pull this off together.