Seiko 6309a diver crown replacement
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You might like to see the contraption that I made for indexing on my Chinese lathe. This is a 4 inch rotary table with dividing plates that I attached to my lathe mandrel using a drawbar. It is completely manually operated. No electronics or computer needed. I have used it to make a 60 tooth clock wheel. I use a Sherline headstock on a vertical slide to drive the gear cutter. The wheel blank is mounted on an aluminium "superglue arbor." This is the modern equivalent of a shellac chuck, and allows the wheel to be centre bored, trued and the teeth cut in a single setup, ensuring that concentricity is maintained. The finished wheel after crossing. I have not tried to make small watch parts on this lathe. The runout on the mandrel bearings may be too high for that. I won't know unless I try. -
By coreymsnow · Posted
Y'all are very helpful, I can't thank you enough for the insights. -
By FabioBastardo · Posted
Will do. Funny it doesn’t have a makers name. -
By Neverenoughwatches · Posted
Andygsi said he was done after last week and think old hippy has gone the same way😞. I'll miss both of them, especially the old fella.
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