Hey Peopz, alright second try to upload video with an overview of my machine and setup sofar, a while back @Chris_Sader wanted to know more about my machine due to the bigger 800mmx800mm cutting area, so I thought others might be interested aswell as this is not a K40 but a complete DIY 
any questions or suggestions are appreciated 
tried to keep it short 
missing/deleted image from Google+
Well short it wasâŚjust a black square for me.
@funinthefalls should work now, takes some time to process, pretty annoying, G+ should release the post when video was ready! not while!
Looks great! You have done a fine job of it. Iâve had the pleasure of following the project from the start, and it has come soo fare since version 1.
Beautiful design! Is that openbuilds vslot rail?
Thx @Alex_Krause and no they are Square rails Y-Axis 20mm from Rexroth, and 15mm on the X-Axis. A little pricy, but worth every penny! And I got them from a good place. (http://www.cnc-discount.de) Good and cheap
Are all 4 of those z motors on the same driver? How are they wired up? Are you running any sort of linear rail with them or just floating on the z screws?
Yes @Joe_Spanier all 4 z motors are just all connected same way to one stepper driver, thats also why you hear that High pitch sound. I bought 4 small rails as well but when I put the 4 leadscrews on, it was sturdy as a rock, so didnât want to waste the rails for it, gonna use them for something in the future, so yes just floating on the leadscrews 
Im curious to know how that goes as you use it. It might be perfectly fine. Just curious.
Well @Joe_Spanier I have been using it for a couple of months with this setup, and it does work fine still so far only downside is the high pitch sound though 
but have a small solution for that, just need todo it and youâre not the only one curious about it working/lasting 
@Gunnar_Stefansson I like this design and large working area, using aluminum profiles gives far more freedom. I am positively surprised to see 20mm profiles giving sturdy build of that size. I thought initially this is a v-slot based build, but I see the profiled linear rails there, possibly 15 or 20mm for the profiles you use. Donât you have leveling issues with large bed when moving up and down? There is a kind of cross ribs to give mor stiffness, possibly enough for it, as the weight of the laser head is minimal. I like your Arduino based laser safety system and the graphs - awesome look. Thanks for sharing.
@sszafran Thanks man, yes youâre right 15 and 20mm rails, so they fit perfectly with the 20x20 profiles, I was kinda worried that the 20x20 wouldnât be rigid enough, but they are quite amazing and perfect for this kind of application as you donât cut through stuff like a cnc cutting machine wouldâŚ
Right at this moment I drive my bed all the way down until all steppers stall and I have it leveled!!! yeah I know not really proâish but did find out in the weekend that even by doing this I need todo fine adjustments on the bed to get it âPerfectly Levelâ with the Laser Head, but the plan was todo this with the limitswitches once they get installed and use relayâs to cut off each stepper depending on their limitswitch, and when all 4 limitswitches are hit the Arduino will signal the Limitswitch Signal to Mach3 so it knows itâs homedâŚ
The Profile where the laser head is on is a 20x40 profile and is rock sturdy and doesnât sag down in the middle and as you said it doesnât carry any weight to it Thanks for the Comment
Impressive setup. Good luck