Animated 3D assembly manual for Stealthburner builds

Oct 18, 2026 Last reply: 2 hours ago 4 Replies
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Paper manuals and static exploded diagrams have been the standard way to follow a Voron build for years, so an animated, interactive assembly guide for the Stealthburner toolhead feels like a genuinely different approach. Hal Wayland has been working on exactly that, and the current alpha shows a 3D-modeled extruder assembly playing in real time on a light isometric grid, with step-by-step assembly and free orbit navigation around the model.



The technical setup is interesting in its own right. The extruder assembly was rendered in Blender, while the app itself is built on Three.js and Svelte. Hal also implemented a custom sequencer to drive the animations, which seems like a sensible way to keep the step timing under control. The modeled parts look faithful to the real thing: black and red printed housing pieces, heat-set inserts, bearings, drive gears, a shaft, a tensioner arm, a spring and screws, plus a red front cowl with a cooling fan cutout and a dark grey extruder body with its adjustment thumbscrew.



The planned direction is what stands out to me. The idea is a modular manual where selecting a section such as the hotend updates everything automatically, with clickable parts linking to STL downloads and part descriptions. There are also plans for a queue of upcoming parts beside the view with an animated camera picking a good angle, while users can still move around freely, and text instructions with a generated voice-over are on the roadmap.



It is clearly early days. The site is being rebuilt from scratch and is not visitable yet, and Hal says the work would have taken about a week without the technical issues that came up. The open question is whether this should extend to a full interactive manual for the complete printer, which Hal is asking the audience about directly.



Project by Hal Wayland. Watch it on their YouTube channel:

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The custom sequencer for the animations is the detail that convinces me this can work. Hand-timing every step in a general animation tool would fall apart the moment a section changes, so building a dedicated sequencer first seems like the right foundation for the modular idea where picking the hotend rewrites the whole manual. The trade-off is that it is more upfront work before anything is visible, which might explain the slower pace than the week it should have taken.

Does anyone know how the parts are being prepared for the clickable links to STL downloads and descriptions? I am curious whether each modeled piece, like the tensioner arm or the drive gears, gets tagged individually in the scene, or whether that linking happens at a higher level per assembly section. Also curious whether the planned queue of upcoming parts will drive the camera automatically or just sit alongside the free orbit view.

From what the maker has shared, the plan is that selecting an assembly section such as the hotend updates the manual automatically, and there is a queue of upcoming parts beside the view with an animated camera giving a good viewing angle, while users can still move around the model freely if they want. How the individual parts get tagged for the STL links has not been said, as far as I know.

Since text instructions and a generated voice-over are already planned, a concrete suggestion would be to tie the voice-over timing to the custom sequencer, so each spoken step starts exactly when its animation begins rather than running as a separate track. Given the earlier finding that Lego's instructions felt janky on a phone and showed parts as slides with arrows instead of animating them into place, keeping every step as one continuous animation on mobile seems worth protecting as the site rebuild progresses.

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