| name | fabricate |
| description | Design objects for fabrication on the Snapmaker 2 A350T — a 3-in-1 machine with
3D printing (dual nozzle head, official enclosure), laser cutting/engraving (1.6 W
and 10 W heads), and CNC carving. Also supports 4-axis work via the rotary module
(assembled, not yet configured). Outputs OpenSCAD for 3D printing/CNC, SVG/DXF
for laser work. Use for: functional parts, enclosures, brackets, laser-cut panels,
engraved pieces, and CNC-carved stock.
|
| user-invocable | true |
/fabricate — Design for the Snapmaker 2 A350T
Design an object for fabrication on the Snapmaker 2 A350T. The machine is a
3-in-1 platform; the first step is always confirming which modality to use.
Machine Overview
The A350T is equipped with:
- Official enclosure — enables ABS/ASA printing, required for laser safety
- Quick Release toolhead set — faster head swaps; adds a slight margin to usable build area beyond the base dimensions
- Dual Nozzle 2-in-1 Pro Module — two nozzles, one filament at a time
- 1.6 W laser module (original)
- 10 W laser module (high-power upgrade, thicker material cutting)
- CNC carving module
- Rotary module — assembled; 4th-axis (A-axis) capability for laser and CNC; not yet calibrated/configured
Environment Sensors
Two Home Assistant sensors monitor the workshop environment:
- Inside enclosure:
sensor.snapmaker_enclosure — temperature + humidity inside the official enclosure
- Outside enclosure:
sensor.workshop_sensor — ambient workshop temperature + humidity
Query these via the home-assistant agent when evaluating print conditions (e.g. ABS/ASA humidity sensitivity, enclosure warm-up state).
Modality Constraints
3D Printing
| Property | Value |
|---|
| Base build volume | 320 × 350 × 330 mm (X × Y × Z) |
| Build volume with Quick Release | slightly larger — verify with a test print at limits |
| Nozzle diameter | 0.4 mm default; 0.2 / 0.6 / 0.8 mm available |
| Layer height | 0.05 – 0.35 mm; optimal 0.1 – 0.2 mm |
| Extruder temp | up to 275 °C |
| Bed temp | up to 80 °C |
| Filament | 1.75 mm; dual nozzle (2-in-1 Pro Module), one active at a time |
| Bed levelling | Automatic 11×11 grid |
Filament guide:
| Material | Nozzle °C | Bed °C | Notes |
|---|
| PLA | 190 – 220 | 45 – 60 | Easy, enclosure optional |
| PETG | 230 – 250 | 70 – 80 | Good strength, slight stringing |
| TPU | 220 – 240 | 30 – 45 | Flexible; slow print speed |
| ABS | 230 – 250 | 80 | Enclosure required |
| ASA | 240 – 260 | 80 – 100 | UV resistant; enclosure required |
FDM design rules:
- Wall thickness: 1.2 mm minimum (3× nozzle), 2.4 mm for structural parts
- Overhangs: ≤ 45° without supports; note any feature needing supports
- Bridging: reliable up to ~60 mm; flag longer spans
- Tolerances: +0.2 mm clearance on mating faces; +0.3 mm for sliding fits
- Holes: design 0.2 mm oversized (printer shrinks them); exact size for press-fits
- Minimum feature: 0.8 mm (2× nozzle); smaller will not resolve
- Internal corners: fillet r ≥ 0.4 mm to reduce stress
- Layer adhesion is weakest along Z; orient load paths in X/Y
Dual nozzle use cases: material changes between prints without manual re-threading (e.g. PLA then TPU). Only one nozzle is active at a time — true simultaneous multi-material is not supported. Note in design which bodies use which nozzle.
Filament Management
- Storage: all spools are stored in individual zip-lock bags in the workshop space alongside the Snapmaker
- Drying: the EIBOS Polyphemus Dryer is available for moisture-sensitive filaments (ABS, ASA, Nylon, TPU); dry before printing if a spool has been open or humidity has been elevated
- Tracking: every spool has a SimplyPrint.io RFID tag recording material type, colour, temperature settings, and weight remaining — consult SimplyPrint before selecting a spool to confirm available material
When recommending a material, note whether it should be dried first (check sensor.workshop_sensor humidity) and confirm weight remaining via SimplyPrint RFID data.
Laser Cutting / Engraving
| Property | 1.6 W Module | 10 W Module |
|---|
| Working area (flat) | 320 × 350 mm | 320 × 350 mm |
| Typical cut depth (wood) | ~3 mm ply | ~8 mm ply |
| Typical engrave materials | wood, leather, acrylic (light) | wood, leather, acrylic, anodised Al |
| Enclosure | Required for safe operation | Required for safe operation |
Design rules:
- Output format: SVG (preferred) or DXF for cut/engrave paths
- Minimum feature size: ~0.2 mm for engraving; ~0.5 mm for cut paths (kerf ~0.1 – 0.2 mm)
- Add 0.1 mm kerf compensation outward on cut profiles, inward on holes
- Score lines, engrave fills, and cut outlines should be on separate layers/colours
- Material must be flat and secured; warped sheet degrades focus and cut quality
CNC Carving
| Property | Value |
|---|
| Working area (flat) | 320 × 350 mm |
| Z travel (approx.) | up to ~275 mm (less than 3D printing due to spindle length) |
| Typical materials | wood, MDF, PCB, soft plastics, wax |
| Enclosure | Recommended (dust containment) |
Design rules:
- Output format: OpenSCAD (for 3D toolpath geometry) or DXF/SVG (for 2.5D profiles)
- Account for tool radius in inside corners — a square internal pocket needs dog-bone fillets
- Minimum inside corner radius = end mill radius + 10% clearance
- Depth of cut per pass: 0.5 – 1.5 mm for wood; shallower for hard materials
- Always specify stock thickness and origin (top-of-stock vs. spoilboard)
Rotary Module (4th Axis — not yet configured)
The rotary module adds an A-axis (rotation around X). Do not generate production-ready rotary files until it is calibrated. When it is set up:
| Property | Value |
|---|
| Modalities | Laser engraving + CNC (not 3D printing) |
| Workpiece diameter | up to ~80 mm |
| Workpiece length | up to ~400 mm |
| Output format | Luban-compatible toolpaths; rotary SVG for laser |
Flag any rotary design with a # ROTARY — requires calibration before use comment at the top of the output file.
Design Process
1. Choose modality
Confirm which head will be used: 3D print, laser, CNC flat, or CNC/laser rotary.
If unclear, ask. Each has different constraints, file formats, and fixturing requirements.
2. Clarify requirements
- Function: what does the part do / what is being cut or engraved?
- Fit: mating dimensions in mm?
- Material: which filament, sheet material, or stock?
- Quantity: one-off or batch?
Surface ambiguity before proceeding.
3. Design to constraints
Apply the relevant rules from the sections above. For 3D printing, orient the part
so the primary load path runs in X/Y, not Z.
4. Write the design file
3D printing / CNC 3D — OpenSCAD:
// === Parameters ===
wall = 1.6; // mm — 4× nozzle for structural parts
// === Build volume check (3D printing) ===
assert(part_x <= 320, "Exceeds X build volume");
assert(part_y <= 350, "Exceeds Y build volume");
assert(part_z <= 330, "Exceeds Z build volume");
$fn = 64;
// === Modules ===
module body() { ... }
// === Main ===
body();
Laser / CNC 2.5D — describe SVG/DXF layer structure in comments, then emit
the vector geometry. Separate layers: engrave-fill, engrave-outline, score, cut.
5. Validate
6. Fabrication notes
End the response with a concise Fabrication Settings block:
- Modality and head
- Material + temps (3D) or feed/speed (CNC) or power/speed (laser)
- Layer height / pass depth
- Supports or fixturing needed
- Filament spool status (colour, weight remaining, dry/wet)
- Estimated time (rough)
Output Format
- Design rationale (2–4 sentences): key decisions and trade-offs.
- Design file in a fenced code block (
openscad, svg, or dxf), saved to disk with the Write tool as <descriptive-name>.scad / .svg / .dxf.
- Fabrication Settings as a compact table or bullet list.
- Known limitations — assumptions made, features not modelled, anything needing manual verification before fabrication.
