The more I read, the more lost I get. Help me suite my first build.

[eurikain]

Clive - you are right about the line of 5 sockets.

If anyone wants the Engrish language version of the BoB manual PM me with your email address and I will forward it to you. For some reason I can't upload it as the Adobe plug-in crashes on the uploader - Lee comment ?

Rob

Thanks so much ! I attach to this post the PDF you sent me :)

You don't say what your driving the machine with ie ball screws etc slaved axis etc. ?

I have 2 x 2m SFU2010 ballscrew on X, 1.3m SFU1610 ballscrew on Y, and 0.6m SFU1605 ballscrew on Z. I think X is oversized, but I had to go with 2010 because lengths were higher than 1.5m. Fred @BST Automation even recommended SFU2510, but I didn't think that binding would be a problem for an MDF machine. Turns out the screws don't bind at all, unless you push on them obviously. I can't say anything about whipping as I haven't tried them on yet.

The steppers you have have a high inductance and the Zapp ones will be much better http://www.zappautomation.co.uk/elec...tor-48577.html

Well noted. I'll keep those (or CNC4YOU, whichever one is cheaper) in mind :)

If you are going to build another machine and want to use the bits again go with AM882 at least as they have stall detect and run them at about 70V. Some of the newer drive can be run from AC as well.

Sounds good ! I think you're right, thinking long term good quality is a better money saver.

Building your own PS supply will cost about £45 ish

Right, as we discussed in the other thread. I have done some more research on the forum but apparently I don't use the correct terms (I searched "unregulated power supply", "diy power supply", but searches with words of less than three letters don't work... for the software engineer and web developer that I am, that's a key thing missing on the forum !). I found a thread where someone built his own unregulated PSU for 4 x CNC4YOU Nema 23 3.1Nm and 4 x AM882 (which would most likely match my case), but I found it hard to find the right information throughout the discussion. I think we should add a "DIY unregulated psu tutorial" thread to the forum, with wiring diagram, simple formulaes, links to parts and pictures of how to make it. If this already exists, can you point me in the right direction ? I can always start such a thread when I make my PSU, but would rather see someone with much more experience doing it :/