It is possible to transform a RepRap to a CNC router. Details as below:

Parts and photos:
[www.thingiverse.com]
[www.thingiverse.com]
[www.thingiverse.com]

Videos:
[youtu.be]
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Happy milling!!

Nice. What did you use to generate tool paths?

skeinforge.

select profile type to: Milling, End Mill.

But still testing on "Chop", "Drill", "Feed", "Flow", "Mill"..... etc. setting............

I am attempting to build a 8'x4' CNC router specifically designed for rough cut wood slabs. Can you please help me on this on how to really make a good one. Would love to hear any feedbacks from anyone. Thanks!

Have a look here [www.mycncuk.com] and read through some of the build logs.