LIMNMEDIA - Uprights, Boom Assembly & First Constraints

The full assembly is placed onto the base plate for the first time, and initial layout begins for mounting the uprights to the rotation stage.

This is one of those moments where the system stops being theoretical and starts revealing its real behavior.

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Process

With the boom pivot established, the uprights are mounted with bearings and the arm is set into place. The assembly is then positioned on top of the base plate, giving the first full read of proportions and relationships between components.

From there, the layout process begins—marking out where the uprights will mount to the base. At this stage, it’s still flexible. Nothing is drilled yet. This is about observation, alignment, and understanding how the structure wants to sit.

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Notes

Up to this point, the design has been intentionally minimal—tight spacing, compact stack heights, and a focus on keeping everything as efficient as possible. On paper, that approach makes sense. In practice, it starts to expose constraints.

Clearances that seemed sufficient begin to feel tight. Access for tools, fasteners, and adjustments becomes more limited. Small variations in earlier steps start to show up more clearly when everything is assembled together.

Mounting the bearings directly to the uprights also begins to reveal its tradeoffs. What seemed like a clean, simple solution now has to accommodate the realities of the boom drive system, which introduces forces and alignments that weren’t fully apparent before this stage.

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LIMNMOCO Context

This is the first time the build reads as a complete system:

• base rotation stage
• uprights
• pivoting boom arm

Even without motors or full drive integration, the geometry is now visible. You can start to see:

• how the arm will move
• where loads will transfer
• where adjustments will be needed

It’s also where the design begins to push back a little.

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Why This Matters

There’s a point in every build where the design stops being something you control completely and starts becoming something you collaborate with. This is that point.

Tight tolerances and minimal design aren’t inherently wrong—but they remove margin. And margin is what absorbs the unknowns. When you take that away, the system becomes more precise, but also more sensitive.

What’s happening here is not failure—it’s feedback.

The prototype is doing exactly what it’s supposed to do:

revealing constraints that couldn’t be seen in isolation

There’s a balance between elegance and forgiveness. Early on, it’s tempting to chase elegance—to make everything as tight and efficient as possible. But prototyping often benefits from a bit more space, a bit more adjustability, a bit more room to be wrong.

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A Note on Process

This is also where mindset matters. It’s easy to feel like you’ve made a mistake when something doesn’t fit as cleanly as expected. But this isn’t the final version.

This is the skateboard, not the Ferrari. (Quoting a saying from Mel here)

The purpose here isn’t perfection—it’s understanding. Every constraint discovered now is something that doesn’t have to be guessed later. Every adjustment is part of building a system that actually works in the real world.