I have been doing some threading in a toy lathe (Prazi SD300). It has none of the usual threading aids, such as threading dial, half nuts, leadscrew reverse, etc. It is a very tedious process.
The lathe has been modified to DC and variable speed. It will slow to a walk and stops instantly.
I previously made a revolution counter to wind coils using a Hall sensor and simple counter. I am now considering using the same approach to count turns and stop the lathe at a pre-determined count. I would then manually reverse, run up to the same count, etc. The on/off controls are typical momentary switches with relays, but are at full voltage (120 VAC).
Has anyone here done something similar, so I don't re-invent the wheel?
Thanks. John
The lathe has been modified to DC and variable speed. It will slow to a walk and stops instantly.
I previously made a revolution counter to wind coils using a Hall sensor and simple counter. I am now considering using the same approach to count turns and stop the lathe at a pre-determined count. I would then manually reverse, run up to the same count, etc. The on/off controls are typical momentary switches with relays, but are at full voltage (120 VAC).
Has anyone here done something similar, so I don't re-invent the wheel?
Thanks. John