Print settings and optimization for Prusa Mini+ with E3D Revo Micro hotend, bowden direct drive extruder, and ObXidian nozzles (0.25mm, 0.4mm, 0.6mm, 0.8mm). Use when the user asks about print settings, slicer profiles, troubleshooting prints, material temperatures, flow rates, nozzle selection, or optimizing prints for this specific printer configuration. Triggers on phrases like "print settings", "slicer profile", "layer height", "print speed", "temperature", "first layer", "stringing", "calibration", "which nozzle", or any 3D printing task mentioning Prusa Mini, Revo, or ObXidian.
Specialized knowledge for printing on a modified Prusa Mini+ with E3D Revo Micro hotend and ObXidian wear-resistant nozzles in 0.25mm, 0.4mm, 0.6mm, and 0.8mm sizes.
| Component | Specification |
|---|---|
| Printer | Prusa Mini+ |
| Build Volume | 180 × 180 × 180 mm |
| Hotend | E3D Revo Micro (40W HeaterCore) |
| Thermistor | Semitec 104NT-4-R025H42G |
| Nozzles | ObXidian 0.25mm, 0.4mm, 0.6mm, 0.8mm |
| Max Hotend Temp | 300°C |
| Filament Diameter | 1.75mm |
| Drive System | Bowden with direct drive extruder |
| Nozzle | Best For | Trade-offs |
|---|---|---|
| Fine detail, text, miniatures |
| Slowest, avoid abrasive filaments |
| 0.4mm | General purpose, balanced | Standard, most profiles available |
| 0.6mm | Faster prints, structural parts | Less detail, +25% impact strength |
| 0.8mm | Rapid prototyping, large objects | Least detail, fastest, best for abrasives |
0.25mm - Miniatures, small text, jewelry, precision parts
0.4mm - Default for most prints, prototypes, mixed detail
0.6mm - Structural parts, functional prints, moderate abrasives
0.8mm - Large objects, vases, rapid prototypes, heavy abrasives (CF, GF)
These are E3D's conservative starter settings for Revo hotends. Track width = extrusion width ≈ nozzle diameter.
| Nozzle | Profile | Layer Height | Wall Speed | Infill Speed |
|---|---|---|---|---|
| 0.25mm | Fine | 0.06mm | 15 mm/s | 30 mm/s |
| 0.25mm | Medium | 0.125mm | 25 mm/s | 50 mm/s |
| 0.25mm | Coarse | 0.18mm | 30 mm/s | 60 mm/s |
| 0.40mm | Fine | 0.10mm | 15 mm/s | 30 mm/s |
| 0.40mm | Medium | 0.20mm | 25 mm/s | 50 mm/s |
| 0.40mm | Coarse | 0.30mm | 30 mm/s | 60 mm/s |
| 0.60mm | Fine | 0.15mm | 15 mm/s | 30 mm/s |
| 0.60mm | Medium | 0.30mm | 25 mm/s | 50 mm/s |
| 0.60mm | Coarse | 0.45mm | 30 mm/s | 60 mm/s |
| 0.80mm | Fine | 0.20mm | 15 mm/s | 30 mm/s |
| 0.80mm | Medium | 0.40mm | 25 mm/s | 50 mm/s |
| 0.80mm | Coarse | 0.60mm | 30 mm/s | 60 mm/s |
Bed: 50-60°C | Cooling: 100%
| Nozzle | Profile | Layer Height | Wall Speed | Infill Speed |
|---|---|---|---|---|
| 0.25mm | Fine | 0.06mm | 15 mm/s | 30 mm/s |
| 0.25mm | Medium | 0.125mm | 25 mm/s | 50 mm/s |
| 0.25mm | Coarse | 0.18mm | 30 mm/s | 60 mm/s |
| 0.40mm | Fine | 0.10mm | 15 mm/s | 30 mm/s |
| 0.40mm | Medium | 0.20mm | 25 mm/s | 50 mm/s |
| 0.40mm | Coarse | 0.30mm | 30 mm/s | 60 mm/s |
| 0.60mm | Fine | 0.15mm | 15 mm/s | 30 mm/s |
| 0.60mm | Medium | 0.30mm | 25 mm/s | 50 mm/s |
| 0.60mm | Coarse | 0.45mm | 30 mm/s | 60 mm/s |
| 0.80mm | Fine | 0.20mm | 15 mm/s | 30 mm/s |
| 0.80mm | Medium | 0.40mm | 25 mm/s | 50 mm/s |
| 0.80mm | Coarse | 0.60mm | 30 mm/s | 60 mm/s |
Bed: 70-85°C | Cooling: 30-50%
| Nozzle | Profile | Layer Height | Wall Speed | Infill Speed |
|---|---|---|---|---|
| 0.25mm | Fine | 0.06mm | 15 mm/s | 30 mm/s |
| 0.25mm | Medium | 0.125mm | 25 mm/s | 50 mm/s |
| 0.25mm | Coarse | 0.18mm | 30 mm/s | 60 mm/s |
| 0.40mm | Fine | 0.10mm | 15 mm/s | 30 mm/s |
| 0.40mm | Medium | 0.20mm | 25 mm/s | 50 mm/s |
| 0.40mm | Coarse | 0.30mm | 30 mm/s | 60 mm/s |
| 0.60mm | Fine | 0.15mm | 15 mm/s | 30 mm/s |
| 0.60mm | Medium | 0.30mm | 25 mm/s | 50 mm/s |
| 0.60mm | Coarse | 0.45mm | 30 mm/s | 60 mm/s |
| 0.80mm | Fine | 0.20mm | 15 mm/s | 30 mm/s |
| 0.80mm | Medium | 0.40mm | 25 mm/s | 50 mm/s |
| 0.80mm | Coarse | 0.60mm | 30 mm/s | 60 mm/s |
Bed: 90-100°C | Cooling: 10-30% | Enclosure recommended
Use ASA settings. ABS typically prints 5°C hotter than ASA.
Bed: 95-110°C | Cooling: 0-20% | Enclosure required
| Nozzle | Profile | Layer Height | Wall Speed | Infill Speed |
|---|---|---|---|---|
| 0.25mm | Fine | 0.06mm | 15 mm/s | 30 mm/s |
| 0.25mm | Medium | 0.125mm | 25 mm/s | 50 mm/s |
| 0.25mm | Coarse | 0.18mm | 30 mm/s | 60 mm/s |
| 0.40mm | Fine | 0.10mm | 15 mm/s | 30 mm/s |
| 0.40mm | Medium | 0.20mm | 30 mm/s | 60 mm/s |
| 0.40mm | Coarse | 0.30mm | 40 mm/s | 80 mm/s |
| 0.60mm | Fine | 0.15mm | 15 mm/s | 30 mm/s |
| 0.60mm | Medium | 0.30mm | 25 mm/s | 50 mm/s |
| 0.60mm | Coarse | 0.45mm | 30 mm/s | 60 mm/s |
| 0.80mm | Fine | 0.20mm | 15 mm/s | 30 mm/s |
| 0.80mm | Medium | 0.40mm | 25 mm/s | 50 mm/s |
| 0.80mm | Coarse | 0.60mm | 30 mm/s | 60 mm/s |
Bed: 40-60°C | Cooling: 50% | Retraction: Minimal or disabled
Softer TPUs require higher temps. Same layer heights as TPU 92A.
Bed: 40-60°C | Cooling: 50% | ⚠️ Bowden systems struggle with soft TPU
⚠️ Use 0.4mm nozzle or larger only
| Nozzle | Profile | Layer Height | Wall Speed | Infill Speed |
|---|---|---|---|---|
| 0.40mm | Fine | 0.10mm | 15 mm/s | 30 mm/s |
| 0.40mm | Medium | 0.20mm | 25 mm/s | 50 mm/s |
| 0.40mm | Coarse | 0.30mm | 30 mm/s | 60 mm/s |
| 0.60mm | Fine | 0.15mm | 15 mm/s | 30 mm/s |
| 0.60mm | Medium | 0.30mm | 25 mm/s | 50 mm/s |
| 0.60mm | Coarse | 0.45mm | 30 mm/s | 60 mm/s |
| 0.80mm | Fine | 0.20mm | 15 mm/s | 30 mm/s |
| 0.80mm | Medium | 0.40mm | 25 mm/s | 50 mm/s |
| 0.80mm | Coarse | 0.60mm | 30 mm/s | 60 mm/s |
Bed: 75-90°C | Cooling: 30-50%
⚠️ Use 0.4mm nozzle or larger only | Dry filament thoroughly
| Nozzle | Profile | Layer Height | Wall Speed | Infill Speed |
|---|---|---|---|---|
| 0.40mm | Fine | 0.10mm | 15 mm/s | 30 mm/s |
| 0.40mm | Medium | 0.20mm | 30 mm/s | 60 mm/s |
| 0.40mm | Coarse | 0.30mm | 40 mm/s | 80 mm/s |
| 0.60mm | Fine | 0.15mm | 15 mm/s | 30 mm/s |
| 0.60mm | Medium | 0.30mm | 30 mm/s | 60 mm/s |
| 0.60mm | Coarse | 0.45mm | 40 mm/s | 80 mm/s |
| 0.80mm | Fine | 0.20mm | 15 mm/s | 30 mm/s |
| 0.80mm | Medium | 0.40mm | 30 mm/s | 60 mm/s |
| 0.80mm | Coarse | 0.60mm | 40 mm/s | 80 mm/s |
Bed: 70-90°C | Cooling: 20-40% | Enclosure recommended
| Material | Hotend | Bed | Cooling | Notes |
|---|---|---|---|---|
| PLA | 200°C | 50-60°C | 100% | Easy, universal |
| PETG | 240°C | 70-85°C | 30-50% | Strings easily |
| ASA | 240°C | 90-100°C | 10-30% | UV resistant |
| ABS | 245°C | 95-110°C | 0-20% | Enclosure required |
| TPU 92A | 230°C | 40-60°C | 50% | Flexible |
| TPU 85A/75A | 260°C | 40-60°C | 50% | Very flexible |
| PETG-CF | 250°C | 75-90°C | 30-50% | 0.4mm+ only |
| Nylon-CF | 270°C | 70-90°C | 20-40% | 0.4mm+ only, dry! |
Formula: Min = 25% nozzle, Max = 75-80% nozzle
| Nozzle | Minimum | Maximum | E3D Fine | E3D Medium | E3D Coarse |
|---|---|---|---|---|---|
| 0.25mm | 0.06mm | 0.20mm | 0.06mm | 0.125mm | 0.18mm |
| 0.40mm | 0.10mm | 0.32mm | 0.10mm | 0.20mm | 0.30mm |
| 0.60mm | 0.15mm | 0.48mm | 0.15mm | 0.30mm | 0.45mm |
| 0.80mm | 0.20mm | 0.64mm | 0.20mm | 0.40mm | 0.60mm |
| Nozzle | PLA | PETG | ABS/ASA | Notes |
|---|---|---|---|---|
| 0.25mm | 4-5 | 3-4 | 4-5 | Limited by geometry |
| 0.40mm | 8-11 | 6-8 | 8-10 | Standard |
| 0.60mm | 11-15 | 8-11 | 10-12 | Higher throughput |
| 0.80mm | 15-17 | 10-13 | 12-15 | May benefit from 60W |
| Nozzle | Length | Speed | PETG Add |
|---|---|---|---|
| 0.25mm | 3.0mm | 35 mm/s | +0.5mm |
| 0.40mm | 3.5mm | 35 mm/s | +0.5mm |
| 0.60mm | 4.0mm | 35 mm/s | +0.5-1.0mm |
| 0.80mm | 4.5mm | 35 mm/s | +0.5-1.0mm |
The Bondtech IFS printer profiles are configured with these defaults:
| Setting | Value | Notes |
|---|---|---|
binary_gcode | 0 (ASCII) | Required for Input Shaping - binary gcode triggers firmware warning |
retract_length | 2mm | Reduced for Bowden stress reduction |
retract_speed | 35 mm/s | Matched deretract speed |
deretract_speed | 35 mm/s | Symmetric with retract speed |
fill_pattern | gyroid | Bowden-friendly, smooth curves |
support_material_style | organic | Tree supports, easy removal |
Input Shaping: Always use ASCII gcode (binary_gcode = 0) for Prusa Mini+ with Input Shaper firmware. The firmware checks for M862.6 P"Input shaper" in the start gcode.
A printed outline around all models that primes the nozzle and lets you verify first-layer adhesion before the actual print begins.
| Setting | Default | Notes |
|---|---|---|
| Loops | 1 | Set to 0 to disable; more loops = more priming |
| Distance from object | 6mm | Gap between skirt and model |
| Skirt height | 3 layers | Prusa default; 1-layer skirts are hard to remove |
| Draft shield | Off | Full-height skirt wall — enable for ABS/ASA to block drafts |
| Min extrusion length | 0 | Forces extra loops if priming is insufficient |
Best practice: Always use at least a 1-loop skirt. Catches first-layer issues before they ruin a print.
Extra material printed around the first layer perimeter to increase bed adhesion.
| Setting | Recommended | Notes |
|---|---|---|
| Brim type | Outer only | Options: outer only, inner only, outer+inner |
| Brim width | 3-5mm standard | 5-10mm for large/tall prints |
| Brim separation gap | 0.1mm | Small gap for easier removal |
| Scenario | Brim Width | Notes |
|---|---|---|
| Small base, tall object | 5-10mm | Prevents tipping/warping |
| Large flat print | 5-10mm | Prevents edge lifting |
| Multiple small objects | 3-5mm | Stabilizes each piece |
| Heavy/dense filaments (bronze, metal-fill) | 8-10mm | Extra weight stresses adhesion |
| ABS/ASA without enclosure | 10mm+ | Combine with draft shield |
| Standard PLA print | Skirt only | Brim usually unnecessary |
| Nozzle | Brim Separation Gap | Notes |
|---|---|---|
| 0.25mm | 0.05-0.1mm | Thin lines — easy to remove |
| 0.40mm | 0.1mm | Standard |
| 0.60mm | 0.1-0.15mm | Wider lines bond harder |
| 0.80mm | 0.15-0.2mm | Increase gap for clean removal |
# Skirt (default)
--skirts 1 --skirt-distance 6 --skirt-height 3
# Brim instead of skirt
--skirts 0 --brim-width 5 --brim-separation 0.1
# Draft shield for ABS/ASA
--draft-shield=enabled
CRITICAL: PrusaSlicer CLI has different syntax requirements for different option types:
| Option Type | Syntax | Example |
|---|---|---|
| Enum options | --option=value | --fill-pattern=gyroid |
| Numeric options | --option value or --option=value | --temperature 215 |
| Boolean options | --option | --support-material |
= syntax)--fill-pattern=gyroid # rectilinear, grid, triangles, stars, cubic, gyroid, honeycomb, etc.
--support-material-style=organic # grid, snug, organic
--support-material-pattern=rectilinear # rectilinear, rectilinear-grid, honeycomb
--gcode-flavor=marlin2 # marlin, marlin2, repetier, etc.
flatpak run com.prusa3d.PrusaSlicer --export-gcode \
--load "$HOME/.var/app/com.prusa3d.PrusaSlicer/config/PrusaSlicer/print/PROFILE.ini" \
--load "$HOME/.var/app/com.prusa3d.PrusaSlicer/config/PrusaSlicer/filament/FILAMENT.ini" \
--load "$HOME/.var/app/com.prusa3d.PrusaSlicer/config/PrusaSlicer/printer/PRINTER.ini" \
--fill-pattern=gyroid \
--support-material-style=organic \
--temperature 215 \
--first-layer-temperature 215 \
--bed-temperature 60 \
--retract-length 2 \
--retract-speed 35 \
--deretract-speed 35 \
--support-material \
--output ~/3d-print/output.gcode \
~/3d-print/model.stl
For Bowden systems, use these infill/support options:
| Setting | Best Choice | Why |
|---|---|---|
| Infill pattern | gyroid | Smooth curves, constant extrusion, minimal retractions |
| Support style | organic | Tree-like branches, smooth paths, easy removal |
| Avoid | honeycomb, grid | Many direction changes, high retraction count |
| Setting | 0.25mm | 0.40mm | 0.60mm | 0.80mm |
|---|---|---|---|---|
| Nozzle diameter | 0.25 | 0.4 | 0.6 | 0.8 |
| Min layer height | 0.06 | 0.10 | 0.15 | 0.20 |
| Max layer height | 0.20 | 0.32 | 0.48 | 0.64 |
| Retraction length | 3.0mm | 3.5mm | 4.0mm | 4.5mm |
| Retraction speed | 35 mm/s | 35 mm/s | 35 mm/s | 35 mm/s |
| Lift Z | 0.15mm | 0.2mm | 0.2mm | 0.3mm |
PrusaSlicer has profiles for multiple nozzle sizes:
Revo quick-swap (no tools, no hot-tightening):
⚠️ Each nozzle needs its own Live Z calibration!
Max Speed (mm/s) = Max Flow (mm³/s) / (Layer Height × Line Width)
Examples at E3D Medium profile:
| Nozzle | Layer | Width | E3D Wall | E3D Infill |
|---|---|---|---|---|
| 0.25mm | 0.125mm | 0.25mm | 25 mm/s | 50 mm/s |
| 0.40mm | 0.20mm | 0.40mm | 25 mm/s | 50 mm/s |
| 0.60mm | 0.30mm | 0.60mm | 25 mm/s | 50 mm/s |
| 0.80mm | 0.40mm | 0.80mm | 25 mm/s | 50 mm/s |
Note: E3D settings are conservative. Prusa Mini+ can often handle faster speeds.
All sizes:
Size-specific guidance:
| Nozzle | Abrasive Filaments | Clog Risk |
|---|---|---|
| 0.25mm | ❌ Avoid | High |
| 0.40mm | ⚠️ Light use | Medium |
| 0.60mm | ✅ Good | Low |
| 0.80mm | ✅ Best choice | Very Low |
references/material-profiles.mdreferences/troubleshooting.mdreferences/print-settings.md