Hi Jim,

Thanks for that kind offer. I was hoping to use the boring tool as a 3D linked mechanism when I was doing a course in 3D animation.

At the time I could not find fully dimensioned 2D detail drawings for a boring machine and so I switched ideas using a post mill instead, for which I had the sufficient data, and this allowed me to demonstrate rotating linkages, modes of operation and failure mechanisms.

I don't recall seeing dimensions on the Taft patent drawings and so a few key dimensions that relate specifically to this model or one of the others that Will has identified would be useful since all other dimensions could then be scaled from the patent bitmap drawings.

I seem to recall that sometime back one of the Guild members (Leon Buckwalter ?) who is engaged in education was going to have a go with his students at making a new boring machine and if sucessfull then offer these new tools to Guild members but I am unsure if there was ever a positive outcome to that initiative.

Regards

Ken Hume