While overhauling the Schaublin 13, some o-rings are to be replaced. The original plans show a cryptic reference for the parts. We found how they relate to o-ring sizes.
Fusta i Ferro Blog
A blog about my metalworking projects. Focuses, among others, on traditional precision working techniques, fine tools, measuring devices or metalworking machines. Overhauling of high quality european machines. Enjoying workshop practices. Sometimes writing about woodworking.