Mark out and drill the holes, Photograph 6. As the holes C on the bottom frame are
the same distance apart, mark them out whilst the surface/height gauge is still set.
Follow this by drilling and tapping the part.
This is a simple part and needs no manufacturing detail. However, make it at this
stage as it is required for the next.
Top Frame (2) and Bottom Frame (6)
Assemble these with the base and clamp and position onto the lathe's bed, the clamp
only finger tight. Place a drill chuck into the lathe's spindle fitted with a centre
drill and mark the lathe's centre position onto the frame using the tailstock barrel
to feed it into the centre drill, Photograph 7, then drill 8.2mm diameter though
you may wish to change this size, explanation later.
You will need a rotary table of at least 150mm diameter to use the following method
otherwise it will be necessary to use the method I suggest for the travelling steady
I obviously had changes in my thoughts regarding the setups in the next three photographs
so please treat them as typical rather than being the exact way to proceed. With
a centre in the machine spindle, centralise the rotary table, Photograph 8, fasten
in place, also locking both table axis. Next,centralise the assembly ,Photograph
9 and secure it using the method shown in Photograph 10. Using this method of securing
the assembly, rather than that shown in photograph 9, permits the assembly to be
mounted so that the cap head screws can be placed head up enabling both the bore,
and the groves for the steadies arms to be made at the same setting.