93 lines
4.2 KiB
Markdown
93 lines
4.2 KiB
Markdown
# FLUSH FIDGET — shared agent prompt
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Every agent (Claude, Codex, Grok) reads this file first. It is the single source of
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truth for the project. If something here is wrong, say so in COORDINATION.md; do not
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quietly work around it.
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## Goal
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Orca Slicer wastes most of the filament on a multi-colour print as purge: one real
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4-colour slice used 94 g of purge and prime tower against 19 g for the model itself
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(392 filament changes). Make that purge land in a **flush fidget** instead of the
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tower or a waste bin.
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The flush fidget is the print-in-place Flexi Cube at `assets/flexi cube.stl`.
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Getting that one file through the whole process is the goal: slice it as the purge
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target, print it, and have it still flex.
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**Random colours on the outside are wanted.** Purge showing on the exterior in
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unplanned colours is the desired look, not a defect. Do not hide it inside infill.
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## Success test
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Slice a 4-colour model with the Flexi Cube on the plate as the purge target. Then:
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1. The Flushed + Tower totals in Orca's filament table drop substantially against
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the baseline recorded in `tests/baseline.md`. Ideal: no prime tower at all.
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2. The G-code preview shows purge extruded into the Flexi Cube, with mixed colours
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on its outer surface.
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3. The printed cube still moves. Colour-change purge must not fuse the joints or
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fill the clearances. This is the hard constraint and the likeliest failure.
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## The core problem
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Purge needed per layer depends on the colour changes on that layer. The cube has a
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fixed cross-section per layer. They won't match. Layers needing more purge than the
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cube can take, and layers needing less, both have to be handled. Any design that
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ignores this will look right in the preview and fail on the printer.
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## Rules
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- Smallest change that works. Do not rewrite the slicer.
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- Label every claim VERIFIED (you read the code or ran it) or UNVERIFIED. File paths
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in this document are guesses until an agent confirms them. A starting guess for the
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tower code is `src/libslic3r/GCode/WipeTower.cpp` and `WipeTower2.cpp`.
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- Metric units. No new dependencies without asking Fred.
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- Orca Slicer is AGPL-3.0. Keep upstream as a remote. Keep the licence intact.
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- Only touch this repo and the Orca fork. Never touch Fred's other workspace files.
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- Do not push to `main`. Do not push anywhere public. Fred decides when anything is
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published.
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- Never print without Fred present.
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## Team protocol
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- Each agent works in its own git worktree on `agent/<name>/<task>`.
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- Claim a task in `COORDINATION.md` before starting. Two agents never edit the same
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file at once. Claude merges.
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- Write findings to `recon/<name>-<topic>.md` with file paths and line numbers.
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- Put code changes in the Orca fork. Keep the resulting patches in `patches/`.
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## Phases
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**Phase 0 — Baseline (Claude).** Build Orca from source on this machine. Record the
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exact commands and build time in `tests/baseline.md`. Slice the reference model and
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record its Flushed and Tower totals there. Nothing proceeds until this works.
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**Phase 1 — Recon, read-only.**
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- Codex: trace how the prime tower is generated layer by layer, and where the flush
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matrix and multiplier feed in.
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- Grok: trace the existing "flush into objects' infill / support / this object"
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feature. Where does purge get routed into an object, and what limits how much it
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absorbs?
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- Claude: inspect `assets/flexi cube.stl`. Report its volume per layer, joint
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clearances, and wall thickness. Then set out the options for reconciling purge
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volume with that cross-section, with effort and risk for each.
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**STOP after Phase 1. Report to Fred. Write no code until Fred approves one option.**
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## Options to evaluate (do not implement yet)
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1. No code: use the existing flush-into-this-object feature with the cube as the
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target. Say whether it is enough on its own.
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2. Extend flush-into-this-object so the chosen object absorbs more, including onto
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its outer surface.
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3. Replace the tower geometry with the cube. Likely hardest.
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For each: files touched, effort, and what breaks. Option 2 or 3 must say how the
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joints stay free.
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## Reporting
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Short and plain. Lead with the answer. If you are unsure, say so and say what would
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settle it. Fred has ADHD: no walls of text, no unrequested tangents.
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