Quote Originally Posted by JAZZCNC View Post
Oh, you've got a happy shock coming when you get your machine working. I could have 6 in the time it took you to do that 1 in the video...Lol
I was going to say that. From that chunk of wood and 2 dowel pins i can 3d machine like 20 at once for half a day, ready to sand with 120 grit. People just don't get what a tremendous upgrade is a simple vacuum fixture or ATC on a CNC, not to speak of a whole CNC.


I am a big fan of "Push the START button and leave the area" and come back after the job is done. Robot comes from Cyrillic and means SLAVE in my language. So is the origin of the word Worker , but that's another matter.


If the machine is not wider than 50cm 1 ball screw will be ok. Probably even wider as 60-70cm will be ok, if you don't use it for heavy duty jobs like aluminum. The great decision will be about the Z travel. Do you make it 150mm for normal wood work or 300 for special jobs, now that you are there and will not cost so much.

Price will be very dependent on the linear bearings and if you can weld save from aluminum structure.


I see a machine like this so:

Base frame table made from steel box. On top of box bolted the square rails 20 size and shimmed, so save 200 from epoxy. 1 ball screw, servo driven and rotating screw. Mounted directly on bottom of table. So you see, steel box table must be strong as has to be one piece and the screw to pass beneath and rotating nut to attach to both sides,
but thats cheap, steel is cheap. a couple of 100x100x3mm for the bed. forming a ladder for simplicity. wood or MDF on top.


It could be done cheap but many decisions has to be made. I think that for 2k could be done. Having in mind that for a proper 90x60machine there are 3k in parts or more.



PS. 2 extra bearing blocks that are next to nothing so the bed has 3 long bearing blocks each side positioned correctly / not in the middle, rather reinforcing each side end will help for a no problem 60-70cm width. I have never seen something like that but just came to my mind and i am sure will work fabulously. saving cost of driversm motors, rotating nuts and so