I have an old ten speed that I am converting into a single speed, since the derailers are no good and I am not very comfortable with down tube shifting anyhow. I am in the process of removing all the old paint and planning on repainting it. Before I do that I would like to weld some nuts onto the frame for a water bottle cage and for a rear rack. I will not be doing the welding myself, but my buddy at school will be doing it. In our shop at school we have access to mig, tig, arc, and acetylene. I am unsure if the frame is composed of cro-moly or steel. So my question is, which welding method is best and what settings should we use?
I appreciate any help,