8 x 4 build

[reefy86]

hi before i update on any other parts i just want some advice regarding bed frame for stability and rigid. frame is made up of mild steel and is 100mm x 150mm.

cheers

ash

[kingcreaky]

looks fine to me, but I would perhaps suggest making butt plates, and bolting, to allow for adjustment. I was so grateful for them when I was assembling mine

[toomast]

Add some vertical diagonals too. Diagonals make things rigid.
If you don't have 100x150 steel tubes already bought then I would advise smaller profile with more thickness. Also you have strange overlapping 100x150 vertical posts in lower part of the frame...

[reefy86]

thanks guys, i will be using butt plates and as for the strange overlapping its because there was beams going across the bottom too but trying to keep cost down while keeping a strong frame, i have changed the frame now using 90x90 profiles 5mm thick. here is the frame.

cheers

ash

[reefy86]

does anyone know a company that can pre drill holes for the linear rails ect?

cheers
ash

[Lee Roberts]

That frame revision looks sweet now Ash.

.Me

[reefy86]

thanks lee

[reefy86]

just throwing in my gantry design, the z axis is inside the x axis frame which is supported by 2 200x100mm 10mm thick mild steel box, the z axis has a maximum height of 250mm (would like to go higher but 250mm seems to be the recommended height for rigid and stability.)

what do you think?

cheers

ash

[Clive S]

Are you going to use screws at that length ? driven with a motor on the end.

[reefy86]

do you mean ball screws? if so then yes both sides :) using nema 34 motors and servo drivers.

cheers

ash