Like Shakespear said much ado yes I agree there is so much to be said for neat sleeves of metal drilled to provide both spacers and sizes to turn to there is to problem of mandrel sizes then.
A wonderful thing would be a proper sized mandrel with accurate bushes if they were reamed for between centres a bonus ( one fits all approach) with plain spacers for those that turn a full pen at the one time. So many misfits abound.
I admire you taking this on but there are so many pitfalls. Good luck Dan.
Peter
