Let the fun begin !!! ???

[PAULRO]

well, i've been reading most of the weekend on the electrics and control side of things and i'm still in 2 minds about my next step. i started on sourcing a power supply for the motors / drivers ( AM882) i was quoted 346 euros + vat for a 60 V DC SUPPLY so i think i will be building my own one !!!
i still have a few queries about the twin motor set up on the x axis ball screws. i'm a bit confused about the homing of each ballscrew separately. am i correct in saying that when i home the x axis, both motors engage and head for home simultaneously but because 1 motor might have lost steps during the course of machining they wont reach their respective home switch together? will the motor that has lost steps get to its home switch eventually albeit some time after the first motor and if so why do we need to home them independently.
i was reading( http://www.mycncuk.com/threads/6418-...-CNC-Mk2/page8 ) about independently homing each axis because of missed steps and the strain it buts on the gantry. so my next question is about the distance they travel away from their respective switches before they stop and return. or have i got this concept wrong also!! if i did decide to go the 1 motor route and upgrade the motor to a nema 34 and belt drive both ballscrews would the am8882 drive and 60 VDC POWER SUPPLY need to be upgraded also? it a question of cost at the moment and that's why i'm trying to have some upgradability if i do box myself into a corner with dual motors that need regular independent homing. all these choices are really playing havoc with the hamster in the hamster wheel upstairs.
I THINK I FOUND A ANSWER TO THE ISSUE OF HOMINGhttp://www.mycncuk.com/threads/6565-...dy-Eddy/page30 / 32 , I wouldn't mind but i read that before!!