Hi,
My home would be the corner of my material in that instance. Does that sound right?
No. The corner of your material is 0,0,0 in WORK CO-ORDINATES. Homing is about defining a location 0,0,0 in MACHINE CO-ORDINATES.
Note that the 0,0,0 home location doesn't have to be in one corner or at the end of travel. It can in fact be anywhere within the machine boundaries.
Its normal to arrange your machine home to be at one corner of the machine limits because it causes less confusion for human operators.
What's important is that every time you home your machine it goes to exactly the same spot. With my roller plunger microswitches I can get to
within 0.02mm. If I had indexing on my steppers I could use both the home switches and index homing to get within 2um!
In the first instance FORGET limit switches, work on the best, most accurate, and most reliable home switches you can manage.
Craig