1rst build, time to do next step

[Gytis]

Hello,

OK guys, this is my new gantry and Z axis, I hope I'm in right direction this time to have a strong gantry? I'm just worry now about the weight, now solidworks showing 70kg.,
this is not too heavy for motors 380oz(2.68Nm?)?

Thanks in advance!

[irving2008]

Don't need BK both ends, just at drive end. BF is fine for other end.

[Gytis]

Don't need BK both ends, just at drive end. BF is fine for other end.

Hi Irving,

I almost sure that you are right, but it will be my first built CNC (so I'm trying to do my best as I can)
what I know about screw and ends?

only one,
fixed + fixed ends its much bater than fixed + floated
(it will eliminates wipping and increas the speed ?)

Thanks for input !

[irving2008]

Yes it does but:
A. its much harder to set up right

B. the speed increase factor isn't needed here - very roughly 2600rpm to 3900 rpm for a 16mm screw. Even with a 1605 screw the lower end is >10m/min, far more than you'll achieve in reality

C. It needs more complex machining of the ballscrew end

D. It costs more

By your own admission this is your first build so KISS IMHO :D