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Guild: wafer.space Community
Channel: ℹ️ - Information / 🤪-off-topic / So I'm noodling around http://blog.
After: 2026-08-31 11:59 p.m.
Before: 2026-10-01 12:00 a.m.
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[2026-09-24 2:16 p.m.] essen__



[2026-09-24 2:16 p.m.] essen__
Such a cool project. Congratulations @Vik Olliver

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[2026-09-24 7:06 p.m.] thatreprapguy
Thanks, been at it for a couple of years. Thought I might find some crossover here. The XY table support flexure mechanism is something I'm quite proud of. Single piece, print-in-place.

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[2026-09-24 9:56 p.m.] essen__
> Thanks, been at it for a couple of years
Oh, I believe you 💪


[2026-09-27 11:37 p.m.] namibj
@Vik Olliver Yeah I'm looking forward to the hexapod evolution of this one; sadly it seems none of the work towards that has yet been shared and starting from scratch is a lil bit much 😄
https://github.com/0x23/MicroManipulatorStepper/issues/19

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https://github.com/0x23/MicroManipulatorStepper/issues/19
Road to 6-dof · Issue #19 · 0x23/MicroManipulatorStepper
So I'm quite interested in this. Mostly because I have dreamed for a while to get a 6-dof manipulator and let's be honest. A hexapod is a pipe dream unless you are filthy rich. So I would l...
2026-09_media/19-5EBDB


[2026-09-27 11:39 p.m.] namibj
(A major goal I have there is to be able to assemble flip-chip-dies with the pad density limitations being only negligibly affected by the closed-loop accuracy capabilities of the motion platform.)


[2026-09-27 11:45 p.m.] thatreprapguy
Well the actuator for the μRepRap is modular, and I am thinking of 6 DoF...


[2026-09-27 11:46 p.m.] namibj
> Yes I have, but they seem to have too much friction for precision applications or induce play if they are manufactured with a loose fit.
This one in particular regarding these makes me wonder if the DIY porous graphite block spherical air bearings AppliedScience demonstrated a few years back would scale/be approriate, as AFAIK those can be set up to have no stiction and the air in the gap acts first order as a pretty linear spring which would imply decently behaved kinematic modeling and should at least for sufficiently limited-required-stiffness applications provide acceptable "lack of wiggle/play".....

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2026-09_media/s-l500-586E0.png


[2026-09-27 11:49 p.m.] namibj
YAY.
I'm assuming it's quite possibly better suited for this kind of task?
Given that we're not really looking at sub-micron positioning for die-assembly, but rather efective closed-loop-operation for low single digit micron accuracy?


[2026-09-27 11:51 p.m.] namibj
Also Z conveninetly is much tamer in distance requirements and can likley use a lot of force-control motion for at least corase movement/until-touch to sort of "home" itself to a position right where it's touching and then hold while e.g. resin hardens or e.g. move a defined small distance further to compress ACF (anisotropic conductive film) tape or squash down sintering paste or such....


[2026-09-30 8:52 p.m.] thatreprapguy
I'll be using 3D printed flexures. Quite possibly ones printed on the micron scale by the RepRapMicron.


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