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What it is
Comprehensive 3D printing guide covering printer selection between FDM and resin technologies, 3D modeling in TinkerCAD, Fusion 360, and Blender, slicing with Cura and PrusaSlicer, material properties for PLA, PETG, ABS, and TPU, troubleshooting common print issues, and post-processing techniques.
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SKILL.md
513 lines · 2,666 words
Gather requirements. Ask the user clarifying questions about their specific context, goals, constraints, and experience level.
Analyze the situation. Review the information provided and identify key factors, challenges, and opportunities relevant to three d printing guide.
Comprehensive 3D printing guide covering printer selection between FDM and resin technologies, 3D modeling in TinkerCAD, Fusion 360, and Blender, slicing with Cura and PrusaSlicer, material properties for PLA, PETG, ABS, and TPU, troubleshooting common print issues, and post-processing techniques.
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What it covers
When to Use
Process
Questions to Ask First
Printer Selection
3D Modeling
Slicing
Material Properties
Troubleshooting
Post-Processing
Common Mistakes to Avoid
Output Format
Example
Develop the framework. Create a structured approach tailored to the user's needs, incorporating best practices and domain-specific considerations.
Deliver actionable output. Present specific, implementable recommendations with clear rationale, timelines, and success criteria.
Address edge cases. Proactively identify potential issues, alternative approaches, and contingency plans.
Use this skill when:
User needs guidance on three d printing guide
User asks about three d printing guide best practices or techniques
User wants a structured approach to three d printing guide
Do NOT use this skill when:
A more specialized skill exists for the specific subtopic
The request is outside the scope of three d printing guide
Before providing guidance, establish the user's situation:
What do you want to print? (Prototypes, miniatures, functional parts, art, cosplay)
Do you already own a printer? If so, which model?
What is your budget for a printer?
What is your experience level with 3D printing?
Do you have 3D modeling experience?
What materials do you plan to use?
What print quality do you need? (Draft, standard, high detail)
What size parts do you need to print?
Do you have a ventilated workspace?
Are you printing for personal use or to sell?
| FDM (Filament) | RESIN (SLA/MSLA)
--------------------|--------------------|-----------------------
How it works | Melts plastic | UV-cures liquid resin
| filament layer | layer by layer
| by layer |
Detail resolution | Good (0.1-0.3mm) | Excellent (0.01-0.05mm)
Print size | Large (220mm+) | Small-Medium (130-200mm)
Materials | Many options | Fewer, specialized
Material cost | $15-$35/kg | $25-$60/liter
Post-processing | Minimal | Wash + cure required
Strength | Good-Excellent | Moderate (brittle)
Smell/ventilation | Low (PLA) | Strong (requires ventilation)
Safety | Generally safe | Resin is toxic - gloves required
Noise | Moderate | Quiet
Maintenance | Moderate | Higher (resin is messy)
Best for | Functional parts, | Miniatures, jewelry,
| enclosures, proto | dental, high-detail
CHOOSE FDM IF:
- You're a beginner
- You want functional, strong parts
- You print large objects
- You want low maintenance and safety hassle
- Budget is a primary concern
CHOOSE RESIN IF:
- You need extreme detail (miniatures, jewelry)
- You have a ventilated workspace
- You're comfortable with chemical handling
- Parts are small to medium size
- Surface finish is criticalBUDGET ($150-$300):
Bambu Lab A1 Mini: $200, excellent quality, small build volume
Creality Ender-3 V3: $200, large community, good learning printer
Anycubic Kobra 3: $250, auto-leveling, reliable
MID-RANGE ($300-$700):
Bambu Lab A1: $400, multi-color capable, fast
Bambu Lab P1S: $600, enclosed, fast, excellent
Prusa MK4: $600-$800, gold standard reliability
ADVANCED ($700+):
Bambu Lab X1 Carbon: $1,100, multi-material, enclosed, top-tier
Prusa XL: $1,600+, large format, tool-changer
Voron (DIY): $600-$1,500 (kit), extreme speed, customizable
LARGE FORMAT:
Creality K1 Max: $600, 300x300x300mm
Bambu Lab X1E: $1,500, engineering-grade, enclosedBUDGET ($150-$300):
Elegoo Mars 4 Ultra: $200, 7" 9K screen, excellent starter
Anycubic Photon M3: $200, reliable, good community
Phrozen Sonic Mini 8K:$300, highest resolution in budget class
MID-RANGE ($300-$700):
Elegoo Saturn 3: $400, larger build plate, excellent detail
Phrozen Sonic Mega: $500, large build volume
ADVANCED ($700+):
Formlabs Form 4: $3,500+, professional-grade, easiest workflow
Prusa SL1S Speed: $1,600, speed + qualityTINKERCAD (Beginner):
Cost: Free (web-based)
Learning curve: Very easy
Best for: Simple models, beginners, education
Limitations: No complex curves or parametric design
Use when: You need basic shapes combined together
FUSION 360 (Intermediate-Advanced):
Cost: Free for personal use
Learning curve: Moderate-steep
Best for: Engineering parts, parametric design, assemblies
Features: Parametric modeling, simulation, CAM, technical drawings
Use when: You need precise, functional parts with exact dimensions
BLENDER (Intermediate-Advanced):
Cost: Free, open-source
Learning curve: Steep
Best for: Organic shapes, artistic models, sculpting, characters
Features: Sculpting, mesh modeling, animation, rendering
Use when: You need artistic or organic shapes
OPENSCAD (For Programmers):
Cost: Free, open-source
Learning curve: Moderate (if you can code)
Best for: Parametric designs defined by code
Use when: You want designs that can be easily parameterized
SHAPR3D (Mobile/Tablet):
Cost: Free limited / $25 month
Learning curve: Easy-moderate
Best for: iPad users, quick concept modelingDESIGN RULES:
1. Minimum wall thickness: 1.2mm FDM, 0.5mm resin
2. Minimum feature size: 0.8mm FDM, 0.3mm resin
3. Avoid overhangs greater than 45 degrees (or add supports)
4. Design for layer orientation (strongest along X/Y, weakest Z)
5. Add fillets/chamfers to reduce stress concentration
6. Ensure model is watertight (no holes in mesh)
7. Avoid very thin horizontal features (may not print reliably)
8. Design snap-fits with 0.2-0.3mm tolerance
9. Screw holes: Design 0.1-0.2mm smaller than target (plastic is flexible)
10. Test-print small sections before committing to full prints
TOLERANCES:
Press-fit hole: Design 0.1mm smaller than shaft
Sliding fit: Design 0.2-0.3mm larger
Loose fit: Design 0.4-0.5mm larger
Thread inserts: Follow manufacturer specifications
These vary by printer and material - always test with your setup
FILE FORMATS:
STL: Universal, most common
3MF: Better than STL (supports color, materials, metadata)
OBJ: Good for multi-material models
STEP: Parametric, best for engineering collaborationCURA (by UltiMaker):
Cost: Free
Compatibility: Most FDM printers
Features: Extensive settings, marketplace plugins, tree supports
Best for: Most users, especially Creality/Anycubic printers
PRUSASLICER:
Cost: Free, open-source
Compatibility: Most FDM printers (not just Prusa)
Features: Organic supports, paint-on supports, variable layer height
Best for: Prusa owners, advanced settings, organic supports
BAMBU STUDIO:
Cost: Free
Compatibility: Bambu Lab printers (and generic printers)
Features: Based on PrusaSlicer, multi-color support
Best for: Bambu Lab printer owners
ORCASLICER:
Cost: Free, open-source
Compatibility: Most FDM printers
Features: Fork of Bambu Studio, excellent community
Best for: Users wanting cutting-edge features
CHITUBOX / LYCHEE (Resin):
Cost: Free basic / $24-$40 premium
For: Resin printer slicing
Features: Auto-support, hollow models, drain holesLAYER HEIGHT:
0.08-0.12mm: High detail (slow, smooth surfaces)
0.16-0.20mm: Standard quality (good balance)
0.24-0.32mm: Draft quality (fast, visible layers)
Rule: Layer height should be 25-75% of nozzle diameter
INFILL:
Percentage: How solid the interior is
0-10%: Decorative items, display models
15-20%: Standard prints, general use
25-40%: Functional parts, some strength needed
50-100%: Maximum strength, structural parts
Pattern:
Grid: Good all-around
Gyroid: Best strength-to-weight ratio
Cubic: Good strength in all directions
Lightning: Fastest, minimum material (decorative only)
WALL COUNT (PERIMETERS):
2 walls: Light/decorative prints
3-4 walls: Standard strength
5+ walls: High strength (more walls = more strength than more infill)
PRINT SPEED:
40-60 mm/s: Standard quality
60-100 mm/s: Fast (modern printers handle this well)
100-300 mm/s: High-speed printers (Bambu, Voron)
Reduce speed for: First layer, small details, overhangs
TEMPERATURE:
Varies by material (see material section below)
First layer: +5-10C above normal for better adhesion
SUPPORTS:
When needed: Overhangs over 45-60 degrees, bridges over 50mm
Types:
Normal/linear: Easier to remove, wastes material
Tree supports: Less material, better surface finish
Organic supports: Best surface finish (PrusaSlicer, OrcaSlicer)
Support interface: Enable for cleaner removal (1-3 layers)
ADHESION:
Skirt: Outline around print (primes nozzle, no adhesion)
Brim: Extends first layer outward (improves adhesion for tall/thin prints)
Raft: Full platform under print (last resort, wastes material) | PLA | PETG | ABS | TPU | ASA
-----------|-----------|-----------|-----------|-----------|----------
Nozzle Temp| 190-220C | 220-250C | 230-260C | 210-230C | 240-260C
Bed Temp | 50-60C | 70-85C | 100-110C | 40-60C | 90-110C
Enclosure | No | No | YES | No | YES
Strength | Medium | High | High | Flexible | High
Flexibility| Rigid | Slightly | Slightly | Very | Slightly
UV Resist | Poor | Good | Poor | Good | Excellent
Heat Resist| Low (60C) | Med (80C) | Med (100C)| Low (60C) | Med (95C)
Ease | Easiest | Easy | Difficult | Moderate | Difficult
Smell | Minimal | Minimal | Strong | Minimal | Moderate
Food Safe | *PLA+ | *PETG | No | No | No
Outdoor | No | Yes | No | Yes | Yes
Cost/kg | $15-$25 | $18-$30 | $18-$28 | $20-$35 | $20-$35
* Food safety requires food-safe filament specifically + stainless nozzle
WHEN TO USE EACH:
PLA: Default choice. Decorative items, prototypes, low-stress parts
PETG: Anything needing strength + heat resistance. Outdoor-okay parts
ABS: High-heat applications, professional prototypes (needs enclosure)
TPU: Phone cases, bumpers, gaskets, anything that needs to flex
ASA: Outdoor functional parts (UV stable version of ABS)
SPECIALTY MATERIALS:
Nylon (PA): Very strong, flexible, abrasion-resistant (needs dry box)
Polycarbonate: Extremely strong, high heat resistance (hard to print)
Carbon fiber filled: Stiff, lightweight (wears brass nozzles - use hardened)
Wood fill PLA: Contains wood particles, sandable, natural look
Silk PLA: Shiny, metallic appearance, slightly weaker than standard PLAMOISTURE-SENSITIVE MATERIALS (must be kept dry):
Very sensitive: Nylon, TPU, PETG, PC
Moderately sensitive: ABS, ASA
Less sensitive: PLA (but still degrades over time)
STORAGE SOLUTIONS:
1. Vacuum-sealed bags with desiccant (silica gel)
2. Airtight containers/bins with desiccant
3. Dry box with active desiccant or dehumidifier
4. Filament dryer (Sunlu, eSun, Polydryer): $30-$60
SIGNS OF WET FILAMENT:
- Popping/sizzling sounds during printing
- Stringing and poor surface quality
- Weak layer adhesion
- Rough, pitted surface finish
- Bubbles in extruded filament
DRYING TEMPERATURES:
PLA: 45C for 4-6 hours
PETG: 65C for 4-6 hours
ABS: 80C for 4-6 hours
Nylon: 80C for 8-12 hours
TPU: 50C for 4-6 hoursPROBLEM: First Layer Not Sticking
Causes and fixes:
1. Bed not level → Auto-level or manual tramming
2. Nozzle too far from bed → Lower Z-offset (closer to bed)
3. Bed not clean → Clean with IPA (isopropyl alcohol)
4. Bed temp too low → Increase by 5-10C
5. First layer too fast → Slow to 20-30 mm/s
6. No adhesion aid → Apply glue stick or hairspray (PVA)
PROBLEM: Stringing (Thin strings between travel moves)
Causes and fixes:
1. Retraction too low → Increase retraction distance (1-3mm direct drive, 4-7mm Bowden)
2. Temperature too high → Decrease by 5-10C
3. Travel speed too slow → Increase travel speed
4. Wet filament → Dry the filament
5. Retraction speed → Increase to 30-50 mm/s
PROBLEM: Warping (Corners lifting from bed)
Causes and fixes:
1. Bed temp too low → Increase bed temperature
2. Drafts hitting print → Use enclosure or block drafts
3. First layer adhesion → Wider brim, glue stick, cleaner bed
4. Material choice → PLA warps least; ABS warps most
5. Part design → Add mouse ears (small discs) at corners
PROBLEM: Layer Shifting (Layers offset horizontally)
Causes and fixes:
1. Belt loose → Tighten belts (should twang like a guitar string)
2. Speed too fast → Reduce print speed
3. Motor overheating → Reduce motor current or add cooling
4. Grub screws loose → Tighten set screws on pulleys
5. Print detached → Improve bed adhesion
PROBLEM: Under-Extrusion (Gaps, missing layers)
Causes and fixes:
1. Clogged nozzle → Cold pull or nozzle replacement
2. Temperature too low → Increase by 5-10C
3. Print speed too fast → Reduce speed
4. Filament slipping → Check extruder tension, check for worn gear
5. Partially clogged PTFE tube → Replace tube
PROBLEM: Over-Extrusion (Blobby, rough surfaces)
Causes and fixes:
1. Flow rate too high → Calibrate e-steps, reduce flow to 95%
2. Nozzle too close to bed → Increase Z-offset slightly
3. Temperature too high → Decrease by 5C
PROBLEM: Elephant's Foot (First layers bulge out)
Causes and fixes:
1. Bed too hot → Reduce bed temp by 5C after first few layers
2. Nozzle too close → Slightly raise Z-offset
3. First layer flow too high → Reduce first layer flow rate
PROBLEM: Z-Seam (Visible line running up the print)
Fixes:
1. Set seam position to "aligned" (consistent location, easier to post-process)
2. Set to "sharpest corner" (hides seam at corners)
3. Set to "random" (scattered dots instead of line)
4. Linear advance/pressure advance calibrationSANDING:
Start at 120-150 grit, progress to 220, 400, 600, 800
Wet sanding at higher grits for smoother finish
Fill layer lines with filler primer (automotive) between sanding passes
Works best with PLA and ABS
PAINTING:
1. Sand surface smooth (220-400 grit)
2. Apply filler primer (2-3 coats, sanding between)
3. Apply base coat (spray paint or airbrush)
4. Apply color coats
5. Apply clear coat for durability
VAPOR SMOOTHING (ABS/ASA only):
Expose ABS print to acetone vapor
Smooths layer lines, creates glossy surface
WARNING: Acetone is flammable - proper ventilation required
Method: Sealed container with acetone-soaked paper towel, check every 10 min
HEAT INSERTS:
Brass threaded inserts (M2.5, M3, M4) pressed in with soldering iron
Creates strong, reusable threaded holes in printed parts
Use knurled inserts designed for plastics
Temperature: 200-250C depending on material
ASSEMBLY:
Superglue (CA glue): Instant bond, works on most materials
Epoxy: Strongest bond, gap-filling
Friction welding: Push filament into joint with rotary tool
Solvent welding: Acetone for ABS, MEK for PETG (use sparingly)REQUIRED STEPS:
1. Remove print from build plate (carefully)
2. Wash in IPA or water (water-washable resin) for 2-5 minutes
3. Remove supports before or after curing (before is easier, after is stronger)
4. UV cure: 5-15 minutes in curing station or sunlight
5. Sand any support marks
WASH STATIONS:
Elegoo Mercury Plus: $35-$50 (wash and cure in one)
Anycubic Wash & Cure: $40-$60
DIY: Container with IPA + UV lamp or sunlight
SAFETY:
ALWAYS wear nitrile gloves when handling uncured resin
Work in ventilated area
Dispose of resin waste properly (cure before disposal)
IPA waste must be evaporated or properly disposed
Never pour uncured resin down the drainNot leveling the bed properly (most print failures start here)
Printing too fast before understanding your printer's capabilities
Using default slicer settings for every material (each material needs tuning)
Not storing filament properly (moisture destroys print quality)
Skipping calibration (e-steps, flow rate, temperature tower, retraction test)
Ignoring model orientation (strength and supports depend on it)
Not using supports when needed (or using too many when not needed)
Neglecting maintenance (clean nozzle, lubricate rails, tighten belts)
Printing functional parts in PLA that will be exposed to heat or sun
Not doing a test fit before committing to a 12-hour print
Deliver the response as a structured document with clear headings and actionable content. Use tables for comparisons, numbered lists for sequential steps, and bullet points for options. Include specific examples where applicable.
[Three D Printing Guide deliverable]
1. Context and objectives
2. Analysis or framework
3. Specific recommendations with rationale
4. Action items with timelineInput: "Help me with three d printing guide for a mid-size project."
Output: A complete three d printing guide framework tailored to the specific context, with actionable steps, relevant considerations, and measurable outcomes.
SKILL.md
513 lines · 2,666 words
The text of SKILL.md is shown as it downloads, under the Apache-2.0 license, by Ferrox Labs. The license is the one in the file's own frontmatter.
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