In order that I can avoid the possibility of arrest for Cruelty to Lathes,
(see the vice speed handle thread), to make any future square holes or keyways I thought it best to make a proper slotting attachment, instead of using the lathe carriage.
I have found an old toolpost that I made for a large? 22mm boring bar. Just fits in place of the QCToolholder. A thought passed through my mind that this could be a good basis for a slotter, with the ram on one side and a pivot on the other.
Looking round the internet there seem to be many variations on a theme. One I looked at, even had what appeared to be four pivoting links, so not quite sure how that worked in practice.
Has anyone any tips or advice especially handle/ram ratio and placements of pivot points. I am looking at mounting a 22mm ram in a 100mm long x 60mm square of cast iron bar mounted in one side of the toolpost. (Size chosen as I have a 22.00 reamer.
The toolpost is 75mm square with a 12.00 central hole and is 50mm tall. The old boring bar sat at lathe centre height, (in the rusty bit.)