Hi!
I do have 3 3D printers (2 x OrdBot Hadron + 1 x BBOne) , but no CNC
I consider modding one of my OrdBots trying to make a simple/small CNC (modifuing the Y axis to make it more stable…)
Is a spindle kit like this any god?
If you look around you can find a 400w brushless spindle for a similar price. Brushless means quieter and longer life.
ok - do you have a sample/URL?
Like this one?
http://www.ebay.com/itm/CNC-400W-Brushless-Spindle-Motor-ER11-Mach3-PWM-controller-Mount-engraving-/261754194102?hash=item3cf1c408b6
@Oyvind_Amundsen This one is much better. Brushless DC motor with controller should interface with mach 3 pwm easy. Very nice.
ok - thank you
Sorry. Pasting at my mobile does not always work 
This, or something like it…
http://www.ebay.com/itm/DeWALT-DWP611-1-25HP-Compact-Premium-Variable-Speed-Router-Tool-LED-Lighted-/151771369285?hash=item2356474f45
One of these if the router doesn’t have a speed control…
and a 65mm mount…
But if you just want a specialized litttle 300w spindle, do your own setup…
I have 3 3D printers, and do not use them all - so I consider modding one OrdBot to do simple cnc
sounds interesting, but it seems like your projects are a lot larger and more expensive. then my OrdBot to CNC modification…
I did plan a 3d scanner projects some time ago and purchased some lasers…
If you are just looking for a light-duty machine, you could repurpose your 3D printer pretty easily. NEMA17s aren’t really up to the task of moving through anything but the lightest of materials, but they will still do it - 3mm plywood, balsa, polystyrene, etc. would be easy. All the electronics and such are exactly the same - just on a smaller scale.
Although… my experience is that as soon as you start cutting you want to go bigger and it may be better to start with something a little more heavy duty.
What do you want to do with your CNC? If you are just going to make PCBs or such, you are definitely on the right track.with a repurposed 3D printer.
I understand - after reading more about different CNC configurations I find that I should use NEMA23 - then I have to use other stepper drivers… so I guess it`s better starting a new CNC project
@Oyvind_Amundsen Not necessarily. depends on the size of the 23’s, or rather the amps they draw. The number 23 is just the mount sizing.
@Oyvind_Amundsen My CNC machine has NEMA17 for the Z axis and NEMA23 for the x,y axis. I would say that you could use NEMA17 drives on all axis but you may need to gear them down (mine is 5:1). Also you would only have a small machine but this may be what you want? Would be good for Jewelry.
Is something like this an ok starter CNC? I do not need a larger surface
http://www.ebay.com/itm/3040-CNC-3d-printer-router-milling-machine-mechanical-ball-screw-linear-rail-kit-/151540210627?hash=item2348801bc3
In that price range…
I agree with Mat - that OpenBuilds bundle is very good - and lots of fun to build.
The quality of their components is fine - and you will learn a lot about your machine having to put it together yourself. There is a lot of help from Openbuilds community that you won’t get from some Ebay or Aliexpress built-up CNC. And the nice thing is, for the cost of a bit more aluminium, you can extend it as you need.
(just to be open, I have 50M or so of openbuilds extrusion in various machines - wonderful stuff!)
Everything @Mark_Carew_OpenBuild sells is excellent quality and works great. If he put together a bundle, I’m certain there are no issues with it Him being an actual DIY’er, as appose to BS artist pulling crap out of their butt… You can ask him about any concerns you may have in the openbuilds community…
Plus all the plates are available for downloading so you can cut them yourself for future builds. It’s a great system with endless expandability. So you can start small, and using most of the same moving parts, expand to cutting 4’ x 8’ sheets if you like. The C Beam is a new product and uses 8mm scews on all the axis. But the normal v grove belt system is an ingenious setup that negates the normal backlash issues among others…
They ship fast and pack well out of NJ… http://openbuildspartstore.com/
btw, he just mention possably doing an “OX” bundle soon…
Thank you all, I may start a CNC build project this winter based on Openbuilds C-Beam.