The Must-Have Accessories That Transform Your 3D Printing Game
Buying a 3D printer is just the beginning. The right accessories can dramatically improve your print quality, expand what you can print, and save you hours of frustration. After months of testing with my FlashForge Adventurer 5M Pro, here are the essential accessories every 3D printing maker needs.
1. Filament Dryer: SUNLU S4 Filament Dryer
Why it’s essential: Moisture is the #1 enemy of 3D printing quality. The SUNLU S4 keeps your filament dry, preventing stringing, bubbling, and weak prints.
Best for: Anyone who prints PETG, Nylon, or TPU — or anyone in a humid climate (like Austin, TX).
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2. Precision Digital Caliper: eTchie Digital Caliper
Why it’s essential: You can’t verify filament diameter, measure print dimensions, or check part tolerances without a caliper. This is the most-used tool in any maker’s kit.
Key Features:
- 0-150mm measurement range
- 0.01mm precision
- Stainless steel construction
- Auto-off power saving
- IP65 water-resistant
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3. Build Plate Scraper / Spatula Set
Why it’s essential: Removing prints from the build plate without damaging it is an art. A proper spatula set makes it effortless and protects your PEI plate.
What to look for:
- Flexible blade for PEI plates
- Rigid blade for glass plates
- Comfortable handle
- Multiple thicknesses for different adhesion levels
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4. Nozzle Cleaning Kit
Why it’s essential: Clogged nozzles are inevitable. A proper cleaning kit with brass brushes, needle sets, and cleaning filaments saves you from replacing nozzles prematurely.
What to look for:
- Brass wire brushes (won’t damage nozzle threads)
- Needle set for clearing partial clogs
- De-clogging filament (flexible nylon that pushes through)
- Compressed air canister for blow-out cleaning
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5. Adhesion Supplies: PEI Spray / Glue Stick / Kapton Tape
Why it’s essential: Good first-layer adhesion is the foundation of every successful print. Having multiple adhesion options lets you troubleshoot when prints won’t stick.
Recommendations by material:
- PLA: Glue stick (cheap, effective, easy to clean)
- PETG: PEI spray or hairspray (prevents PETG from bonding too strongly)
- ABS: ABS slurry (dissolved ABS in acetone) or Kapton tape
- TPU: Glue stick or hairspray
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6. Post-Processing Tools
6a. X-Acto Knife / Precision Hobby Knife
For removing support marks, trimming brims, and cleaning up print details. Get a knife with replaceable blades for consistent cutting.
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6b. Sanding Sticks / Sandpaper Variety Pack
Progress through grits: 120 → 220 → 400 → 600 → 1000 for smooth finishes. Wet sanding with water gives the best results.
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6c. Isopropyl Alcohol (99%)
For cleaning prints, removing residue from PEI plates, and prepping surfaces for painting. 99% IPA evaporates faster and leaves no residue.
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7. Printer Upgrade Parts
7a. Spare Nozzles
Brass nozzles (standard), hardened steel (for abrasive filaments like carbon fiber), and ruby nozzles (longest life). Keep at least 3-5 spares on hand.
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7b. Replacement Build Plate
PEI plates wear out over time. Having a spare means you can swap plates mid-print and keep working.
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7c. Belt Tensioner / Replacement Belts
Belts stretch over time, causing layer shifting and dimension inaccuracy. Periodic tension checks and replacement prevent this.
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8. Storage Solutions
8a. Filament Storage Boxes
When not in use, filament should be stored in sealed containers with desiccant. The SUNLU Filament Box or similar products keep filament dry between uses.
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8b. Tool Organizer
A wall-mounted tool board or drawer organizer keeps your post-processing tools accessible and prevents loss.
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Essential Accessories Quick List
| Accessory | Priority | Est. Cost | Why You Need It |
|---|---|---|---|
| SUNLU S4 Filament Dryer | ★★★★★ | $80-100 | Prevents moisture damage |
| Digital Caliper | ★★★★★ | $10-15 | Measure prints accurately |
| Build Plate Scraper | ★★★★★ | $5-10 | Remove prints safely |
| Nozzle Cleaning Kit | ★★★★☆ | $10-15 | Maintain your printer |
| Adhesion Supplies | ★★★★★ | $5-15 | Ensure prints stick |
| X-Acto Knife | ★★★★☆ | $5-10 | Clean up prints |
| Sanding Sticks | ★★★☆☆ | $8-12 | Smooth finishes |
| Spare Nozzles | ★★★★☆ | $10-20 | Keep printing when clogged |
| IPA (99%) | ★★★☆☆ | $8-12 | Clean prints and plates |
| Filament Storage | ★★★★☆ | $15-25 | Protect between uses |
Starter Accessory Kit Recommendation
If you’re just starting out, buy these five items first:
- SUNLU S4 Filament Dryer — The single most impactful accessory
- Digital Caliper — Essential for quality control
- Build Plate Scraper Set — Cheap insurance for your plate
- Nozzle Cleaning Kit — Prevents unnecessary part replacements
- Glue Stick + PEI Spray — Adhesion backup for any material
These five items cost under $150 total and will save you hundreds in failed prints and wasted filament.
Final Thoughts
The best 3D printer in the world won’t produce great prints without the right accessories. Invest in filament storage, measurement tools, and post-processing supplies, and you’ll see immediate improvements in your print quality and success rate.
Ideal for 3D printing hobbyists who want to maximize their printer’s potential with the right tools.
Affiliate Disclosure: As an Amazon Associate, I earn from qualifying purchases. This post contains affiliate links. If you click through and make a purchase, I may earn a small commission at no extra cost to you.
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