Thinking box. Building a CO2 laser

[Palmar]

Hi!!

MY first post. For many years I have been thinking of buying an CO2 Laser Cutter. The ready to use chineese cutters range from 900-3000gbp
have been looking for an 5030 or 6040 machine. But have been reading alot they are unstable and no support after ordereing from China. Even they promise good service and support.
So I will not go that route.

So I was thinking, maby I could build a CO2 laser instead, with quality parts ang get a more stable and better laser cutter.
Will use the CO2 for cutting up to 4-5 mm of plywood and 4-5mm of acrylic sheets. Also do engraving into theese.

Maby one of theese rails will do the trick? :
http://www.aliexpress.com/store/prod...244576102.html
or http://www.aliexpress.com/store/prod...037540272.html
i just need a 6040 system complete with head. Price is around 700-800gbp for the kit

need to add:
motors + driver
lasertube 50 or 60w + psu
optics
dsp system awc 708 lite
wires
any thing else ?
And build and case around the whole machine

My question is, what is the recommended of
Servo or stepper based motor?
lasertube + psu ?


Thanks for all reply :D

Regards
Palmar