- Joined
- Aug 29, 2016
- Messages
- 121
Show me where I am wrong. If the dial has the same number of clicks as the gear has teeth, the leadscrew will always be at the identical place when any click on the dial is at the top. Now if you are using and end stop to the right of the carriage the thread will always be in the same place when you engage the feed screw. The key to this is the gear and the dial have to have the identical number of teeth and clicks. This allows you to cut any thread that the change gears will allow always starting at the same position without having to reverse the feed screw.Mr Whoopee said it all, a stop is completely un necessary for threading with an inch lead screw, only the thread dial is needed. For metric threading on an lathe with an inch lead screw, the half nuts cannot be disengaged, the lathe must be reversed and the tool backed up to the starting point.
It will be awhile until my gears and threading dial come in, but when in I will show a video of how this works. It is so simple I do not know why it has not been done before.