8 x 4 build

**kingcreaky** · 19-08-2015

i used rotating nuts, on my 8x4 build because of the whip effect Clive mentions.

skip to about 1:15

http://www.mycncuk.com/threads/8242-...t=wall+mounted

**reefy86** · 20-08-2015

thanks guys i will take a look :)

**reefy86** · 22-08-2015

i want to hide my z axis stepper motor rather then having it stuck in the air so it requires a belt and pulley, is there a requirement to which i should aim for? more teeth the better or the opposite?

cheers

ash

**Blackrat** · 22-08-2015

i recommend to brace the legs with the diagonals , not the way it is now, there is no force pushing on the braces on that orientation

:)

**reefy86** · 24-08-2015

think this maybe my final design on the frame, what do you think?

cheers

ash

**Robin Hewitt** · 30-08-2015

I don't really know what I think because I can't see what you are trying to achieve.

**reefy86** · 23-02-2016

update on design thanks to the help from Dean :) the frame is made out of 90mmx90mmx5mm mild steel and 200mmx100mmx10mm on both y and x axis. all plates are 25mm thick apart from the end plates that connects to the ballscrews as they will be tentioning the screws so they are 30mm, ball screws are r2020's on x and y and z axis is r1610. the y axis will have a rotating ballnut and ball screws fixed both ends and then tentioned. on both y and x axis i will be using 25mm profile rails and 15mm on the z axis. im not starting with electronics yet but i do know ill be using nema 23's 3nm but still learning here.

thoughts anyone?

Ash