I am also in the process, done one side, the other side is now fairly easy. You need a lathe at least and a decent pillar drill or mill, I mill on the lathe with a vertical slide. You need to be able to check run out etc accurately and machine to a reasonable standard. Mine is probablt
y different, no definitelt, to Tonk or Jon White as we are I think all using different parts, it will probably be a prototype anyway and lead to a better? or at least different solution in the future. If you want a look see me at an event, but like Tonk i am dubious about giving out to much info although when on I may well post some pics.