Why do a home routine at startup?

Homing routines can permit parking positions in machine coordinates, and the positions can be called - depending on the controller - with hotkeys or in macros. I use mine for:

1. Tool change position
2. Part unloading position
3. Washdown position (most of the way back in Y)
4. Start position for indicating my 4th axis (rotary table centered under spindle)
 
A little late to this thread.
Don't forget that if your machine is equipped with an auto oiler it re-oils the ways through the whole travel during the Homing sequence.
A good thing, yes?
 
You dont need to home if you have absolute encoders, you do with incremental for reasons stated above. Absolute encoders are uber expensive and typically not used in CNC production machines that are less than $1,000,000
 
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