planing lathe bed

Описание: This video is of the planing of a Harrison 5L 11" lathe bed. It is 66" long and was badly worn. I first set it up by indicating along the edges of the ways, but strangely, this surface did not match either the ways themselves or the pads for the feed gearbox and end of leadscrew support. Once I aligned the bed with this surface the ways came into reasonable alignment, as did the pads on the rear for the taper attachment.
The relationship between the vees and their flat way was measured before machining so that this dimension could be maintained. A small vee-block was placed inverted over the vee was used for this purpose.
Indicating all way surfaces beforehand gave me the amounts that needed to be removed and so I machined to these numbers. One exception was the inner surface of the carriage way. This had a gouge in it that I felt should be removed and so I went an extra 0.005". That moved the carriage out by 0.0035" which I felt was acceptable. Overall, the carriage ways moved downward by 0.020". That's quite a lot. Either the changegear box will need to be lowered and redoweled, or the carriage will need to be built up. I forgot to turn on the camera for the flat carriage way.
Rees Acheson