operation cnc

[kingcreaky]

Sounds very rude referring to people by their chat handles, I apologise in advance.
Within JoeHarris's build log, JazzCNC points out that its not possible to get long belts in 15mm HTD flavour.(I also noticed this) His solution was to span the long length with a different flavour belt.

(to be fair, probably the best solution). My plan was a little more un-thought out... My vision was to have dual steppers.. I had read in other build logs regarding the issue of missed steps but I hadnt really realised what this means... and disregarded it with a 'il worry about that later' attitude. The other reasoning behind this question is I ultimately would like to go down the spinning ballnut route ala Jonathons build. As Ive had the fear of god put through me regarding whip of the screws.

However ive just read your post on JoeHarris's build thread the following
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No it doesn't go away but if the digital drive has a feature to monitor stall detection and send an alarm signal like the AM882 drive do then it's possible to use this to informthe control software to stop the machine and therefore the other motor before any damage is done.!! . . . . You'll still have lost steps and run out of position slightly but no damage is done.

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I have bought these motor controllers
Cheap CNC! Wantai 4 PCS Stepper Motor Driver DQ860MA 80V 7.8A 256micro CNC Router Mill Cut Engraving Grind Foam Embroidery-in Motor Driver from Industry & Business on Aliexpress.com
(4) of them

Although I have a bob, it was one that come free with the above, I intend to buy another one when I have time to research the best one

Its mentioned above, the problem over missed steps is less significant if you have stall detection.. but I bet the above (cheap) drivers dont have this... ive looked but dont really understand what im looking at. What would you do?
1.)scrap idea of two steppers, and have an arrangement similar to that of the grand master above.. (im favouring)
2.)keep the dual motors (as I have all the gear to hand) where there is one stepper for each of the two screws (the gantry is quite heavy!) but I guess this may entail buying the motor controllers to replace the above?

I genuinly hope this isnt a stupid question.