Quote Originally Posted by LuckyImperial View Post
Sibianul,

It sounds like you've done your research. I can start pointing you down the right direction but you have some limiting factors in your design request. Mainly the 120mm/s speed request.
I seen Sailfish state the print ware made at 120mm/s, also for me this seems very high, his is not a deciding factor , maybe it's the least important one, mainly I want to have a 3D printer and a laser engraver / cutter. Feed speed can be less, no problem

Quote Originally Posted by LuckyImperial View Post
First, you probably want to consider a Cartesian printer (MendelMax most likely). That's not to say that a delta won't work, but a 30cm x 30cm x 30cm capable delta is going to be quite tall and most likely require custom arms. Don't let me convince you though...there are some big delta's that have been done.

Also, in order to print Nylon/ABS/Polycarbonate/PET etc. you will need a 30cm x 30cm heated bed. Luckily they have them: http://www.amazon.com/approx-KEENOVO.../dp/B00V81ZI70. You'll need a solid state relay for Arduino control of that bed though.
About the working surface it's not necessary to have 30cm on all axis, but I want to have at least one axis that long, the Z can be 15 - 20 cm without bothering me too much. I can go as low as 300x200x150 .. but I'll prefer 300x300x200 at least.

Is this heated bed going to work for nylon? The material you stated, the nylon is the one it needs the highest temperature, right ? So if it's good for nylon it must be good for others too. http://www.ebay.com/itm/3D-Printer-H...AAAOSwNphWWhOg

Didn't knew the heated bet consumes so much energy, I seen 300 - 400w .. if the printer runs for many hours that will increase the electricity bill for sure I'm sure it wont be 400w continous, probably there will be only some spikes but I dont have any ideea how often .. anyway, it doesn't metter right now, it just seemed to me quite a high.

About the solid state relay, I have one almost exactly like that, the case is not transparent, but white and it's 30A .. btw I have a box full of all kinds of sensors and devices used around arduino world

Thank you for other advices, I will consider each one.

I don't know yet if any controller (hardware) can support a 3D printer and a Laser engraver on the same machine, all the controllers on the market have enough free pins to wire the laser, don't know if it's just one or more pins needed for the laser.