Board and Motors package - opinions sought

[cropwell]

I would appreciate any comments about the TB6560 board, especially how it would cope with the motors in this kit.

CNC 3rd 4 Axis TB6560 Driver Kit & 425 Oz-in Stepper Motor For Router& Milling | eBay (http://www.ebay.co.uk/itm/CNC-3rd-4-Axis-TB6560-Driver-Kit-425-Oz-in-Stepper-Motor-For-Router-Milling-/191132865786?pt=UK_BOI_Industrial_Automation_Contr ol_ET&hash=item2c806814fa)

I am about to embark on a build, I have the bulk of the materials needed, the rails and ballscrews, but not the electronics.

I have the idea that this board could be a chip fryer. What says anybody ?

The other doubt I have is that this is actually UK stock, and if it is sent to me from China, would HMRC and FedEx want payment ?


Cheers,

Rob

[Jonathan]

Well it's a bit late to say don't even think about it, so here's a few links to help:

http://www.mycncuk.com/forums/motor-drivers-controllers/4276-4-axis-tb6560-cnc-driver-nema17-23-34-motor-3a-ebay-update.html

http://www.mycncuk.com/forums/motor-drivers-controllers/4145-1-axis-tb6560-any-good.html

http://www.mycncuk.com/forums/motor-drivers-controllers/1532-ebay-tb6560-stepper-motor-driver-boards.html

http://www.mycncuk.com/forums/motor-drivers-controllers/1373-ebay-tb6560-stepper-motor-driver-boards-7.html

In short, they have their place - but a respectable CNC router is not it. The problem is the rated voltage of the TB6560 IC is too low to drive the motors often connected to them well - especially the ones in that kit. Here's why (http://www.mycncuk.com/forums/general-discussion/3861-my-cnc-sessions-now-like-laundry-day.html#post25191). If the motors in the link you've given are the correct torque rating for your machine, then you'd be far better off getting these motors (http://www.cnc4you.co.uk/index.php?route=product/product&path=20_26&product_id=363) as their inductance is lower, so they can be driven at a sensible voltage (75V) and get good performance. Look for individual drivers to match the motors - search on the forum and I expect you'll find more posts about this than words in this post.

[cropwell]

Thanks Jonathan,

It is certainly too late to begin thinking about it, I started that process some time ago. I was looking back through posts about the TB6560 and wondering if the horror stories were the result of overdoing the capabilities of the board (well that's fairly obvious) so I was just wondering if there was any merit in them as they are all over eBay like a rash.

I am getting surer that my credit card will be travelling to MK to see CNC4YOU.

Cheers,

Rob