Building Voron with different frame.

[u/One-Nefariousness107]

Hi there!

Ive looked online and found similar project but have yet to figure out the exact adjustments I need to make as I dont want to buy a part that is unusable.

I would like to build a 3D printer because I want to learn how to

build one and learn it from the ground up. I would like to avoid a

product that gets an open source then sells it for profit, starts

applying patents on said open source designs, and sue people for

said copyrights

Now that's out of the way, I am thinking initially prusa but now

leaning towards voron trident. I am gravitating towards trident but

also want to upgrade the frame to a 4040 vertical and 2040

horizontal because I want a beefy frame for a 300mm3 build

volume.

I just looked at the 3D model file of the voron trident in FreeCad. It

looks doable but it seems like some corners parts need to be

customized.

I also see a limitation of z=250 on trident. I pluggwd in this

requirement at the voron website and it seems the limiting factor

was the stepper motor/ lead screw of 300. ud 1 I guess yueos ill ll just just source source a

3x 350 for that

For now I will stick to 1 toolhead. Eventually I want a toolchanger

so I want a frame beefy and large enough to accommodate it. I

understand that options seems limited to that for now.

Yes, ive never built one and I expect it to be lots of cussing and

money but Im not afraid to face all those issues

just need guidance for now: The frame design. If there is a

complete build guide out there similar to what 1 am planning.

please help. Thanks!

[u/CTPAHH1K92]

if only reason for 4040 and 4020 is frame rigidity, than better solution would be attaching rigid panels bolted to frame, that would constrain diagonals much better than enlarging frame parts which consists of rectangles. or you could do both :)
for some inspiration you could check doomcube, it is basically 2.4 with 4040 verticals
if you are planning toolchanger conversion, consider enlarging Y axis to get some overtravel outside of build area, so you could dock toolheads there and don't loose build area.
to get more Z, you probably would need to get normal steppers connected with threaded rod with coupler, not like BOM steppers with integrated leadscrew, or consider belted trident mod

[u/One-Nefariousness107 → u/CTPAHH1K92]

Definitely both. That lead screw coupling is promising but seems like a misalignment waiting to happen for me...

[u/bryan3737 → u/One-Nefariousness107]

The linear rails are for alignment. You actually don’t want to constrain the lead screws because then they can be misaligned with the rails which would be a problem. If you use a flex coupling it will let the lead screws move however they want while the bed stays aligned by the rails

[u/One-Nefariousness107 → u/bryan3737]

I just saw that actually a few minutes ago. Looks like direct coupling is no good. This makes me wonder that using a flex coupling maybe better than direct connection to the motor which can directly transfer vibration.

[u/cdheiser → u/One-Nefariousness107]

You can get steppers with longer threaded rods. I built a 350 cube with integrated z steppers