prusa-mini-revo

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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.

festion By festion schedule Updated 2/9/2026
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name: prusa-mini-revo description: 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.

Prusa Mini+ with E3D Revo Micro & ObXidian Nozzles

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.

Hardware Specifications

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 Selection Guide

Nozzle Best For Trade-offs
0.25mm 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

When to Use Each Nozzle

0.25mm - Miniatures, small text, jewelry, precision parts

  • ⚠️ Avoid filled filaments (particles often >0.25mm)
  • ASA and ABS work best with small nozzles per E3D

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)

  • Best choice for filled filaments—lowest clog risk
  • May need 60W HeaterCore for high-temp materials at high flow

E3D Official Starter Settings

These are E3D's conservative starter settings for Revo hotends. Track width = extrusion width ≈ nozzle diameter.

PLA - 200°C

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%

PETG - 240°C

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%

ASA - 240°C

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

ABS - 245°C (Similar to ASA)

Use ASA settings. ABS typically prints 5°C hotter than ASA.

Bed: 95-110°C | Cooling: 0-20% | Enclosure required

TPU 92A - 230°C

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

TPU 85A / 75A - 260°C

Softer TPUs require higher temps. Same layer heights as TPU 92A.

Bed: 40-60°C | Cooling: 50% | ⚠️ Bowden systems struggle with soft TPU

PETG Carbon Fiber (XT-CF) - 250°C

⚠️ 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%

Nylon Carbon Fiber - 270°C

⚠️ 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

Quick Reference: Temperature Summary

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!

Layer Height Ranges

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

Volumetric Flow Limits (40W HeaterCore)

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

Retraction Settings (Bowden)

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

Bondtech IFS Profile Defaults

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.

Skirt and Brim

Skirt

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.

Brim

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

When to Use Brim

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-Specific Brim Tips

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

PrusaSlicer CLI Flags

# 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

Known Limitations

  • Inner brim does not apply to enclosed cavities within a model in PrusaSlicer (Bambu Studio handles this differently)
  • Brim height and separation should scale together — if using a taller brim, increase the separation gap for easier removal

PrusaSlicer CLI Usage

CLI Syntax Rules

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

Common Enum Options (require = 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.

Complete CLI Example

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

Bowden-Friendly Settings

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

PrusaSlicer Configuration

Printer Settings (per nozzle)

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

Built-in Profiles

PrusaSlicer has profiles for multiple nozzle sizes:

  1. Configuration → Configuration Wizard
  2. Select "Original Prusa MINI+"
  3. Check boxes for each nozzle size (0.25, 0.4, 0.6)
  4. 0.8mm: Create manually based on 0.6mm profile

Nozzle Swap Procedure

Revo quick-swap (no tools, no hot-tightening):

  1. Cool down below 50°C
  2. Unscrew current nozzle by hand
  3. Install new nozzle, finger-tight only
  4. Update slicer - select correct nozzle profile
  5. Re-calibrate - run First Layer Calibration
  6. Verify - print test square

⚠️ Each nozzle needs its own Live Z calibration!

Speed Calculation

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.

ObXidian Nozzle Care

All sizes:

  • E3DLC coating: Non-stick, reduces buildup
  • Copper alloy body: Brass-equivalent thermal performance
  • Tool steel tip: Wear-resistant
  • Max temp: 300°C
  • Install: Finger-tight only, no tools

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

Detailed References

  • For material-specific profiles: See references/material-profiles.md
  • For common print issues: See references/troubleshooting.md
  • For PrusaSlicer print settings (layers, perimeters, infill, supports, seam, ironing, fuzzy skin, pressure equalizer, sequential printing): See references/print-settings.md
Install via CLI
npx skills add https://github.com/festion/homelab-gitops --skill prusa-mini-revo
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