Quite an Unusual one

[Boyan Silyavski]

Hi there. Almost finishing my design.

Basically i decided to go Big.

I designed quite an unusual gantry and Z with the main idea of eliminating as much overhang as possible, light as possible and easy to build as possible.

Another thing is that affected by Jonathan's build i could not help but contemplate an extreme machine with 3rd gantry beam. See picture 6. I believe Jazz sugested something similar, if i am not wrong.


The gantry would be driven by rotating nuts/2510 ball screw/ if Jonathan or somebody is kind enough to make them for me, i know free time is an issue there.

The gantry design as tested by me will have less than 0.01 flex and bend /twist/ and will weight 2 beams -40kg +Z weight or 55kg+Z weight if triple.

For the moment i am very inclined to invest in the Leadshine hybrid 220V AC drives, though maybe i will start with Geckos as i have them. Depends what would cost me for rails and ballscrews for 1250x2500. Still have not decided. But if i make it only 1250x1250, definetly the 3 beam design and the AC drives.


What worries me most is the bed, as i dont have money for 20mmm alu bed. I am contemplating how to make a strong cheap bed with strong channels.



Now please tell me what do you think? My main idea is to build something exceptional if possible, cheap as possible where possible , and as simple as possible, so when i share the plans it could easily be repeated by other people.

PS. The Z design is just a sketch, is not finished, will be lightened and i will try to move the ball screw further to the center without messing with the spindle. Another point is that now the plan is for 100mm diameter spindle, as i assume most people would choose for such a machine.