25 Must-Have 3D Printer Accessories in 2026

After years of 3D printing, my workspace looks nothing like it did when I started. Alongside my printers sits a collection of tools, accessories, and upgrades that I have accumulated through trial, error, and more than a few failed prints. Some of these items I wish I had bought on day one. Others I discovered later and wondered how I ever managed without them. Here are the 25 accessories that I genuinely consider must-haves for any 3D printing setup in 2026.

Build Surface and Adhesion

1. PEI Spring Steel Build Plate

If your printer did not come with a PEI sheet, this is the single best upgrade you can make. A textured PEI spring steel sheet provides excellent adhesion for PLA, PETG, and ABS while allowing easy part removal when cooled. The magnetic mounting means you pop the plate off, flex it to release the print, and snap it back. I cannot go back to scraping parts off a fixed bed.

2. Magigoo Adhesive

Magigoo Original is a specialized 3D printing adhesive that works better than generic glue sticks. It activates at printing temperature and releases when the bed cools. I use it primarily for PETG on smooth PEI (where PETG bonds too aggressively without a release agent) and for ABS on any surface. One bottle lasts months.

3. Isopropyl Alcohol (99%)

99% IPA is essential for bed cleaning. Oils from your fingers, residue from filament, and general dust all reduce bed adhesion. A quick wipe with IPA before each print ensures consistent first layers. Buy the 99% concentration, not the 70% — the higher water content in 70% leaves residue.

Filament Management

4. Sunlu S2 Filament Dryer

A Sunlu S2 filament dryer is no longer optional — it is essential. PETG, TPU, nylon, and even PLA absorb moisture that ruins print quality. The S2 holds one standard spool and can feed directly to your printer while drying. I run mine during every PETG and TPU print.

5. Vacuum Storage Bags

For filament you are not actively using, vacuum storage bags with silica gel desiccant keep moisture at bay. I vacuum-seal any roll that will not be used within a week. The investment in bags and a cheap hand pump pays for itself in reduced wasted filament.

6. Silica Gel Desiccant Packs

Rechargeable silica gel packs absorb moisture from your filament storage containers and dryer. The color-indicating variety turns from orange to green when saturated, and you can recharge them in an oven at 250°F for two hours. I keep several in rotation.

7. Filament Clips

Universal filament clips secure the end of your filament to the spool when not in use. Loose filament ends cause tangles, which cause print failures. These cost almost nothing and prevent a surprisingly common problem. You can also print your own on 3DSearch — search for "filament clip."

Hand Tools

8. Flush Cutters

Micro flush cutters are the most-used tool in my printing workspace. They cut support material, trim brims, snip filament ends, and handle general cleanup. The flush-cut design leaves a clean, flat surface unlike angled cutters. Buy two — they are cheap and you will lose one eventually.

9. Deburring Tool

A deburring tool cleans up the edges and bottom surfaces of prints where the brim was attached or where the first layer left a slight ridge. The rotating blade shaves material smoothly without gouging. It is faster and cleaner than a craft knife for edge cleanup.

10. Metal Spatula / Print Removal Tool

Even with a flex build plate, some prints benefit from a thin spatula to help pry them off. A thin flexible spatula slides under prints without damaging the build surface. Look for one with a thin, flexible blade rather than a rigid scraper.

11. Needle Files Set

A precision needle file set is invaluable for fitting parts together. When two printed pieces need to mate and the tolerance is slightly off, a few strokes with a needle file fix the fit without reprinting. Different profiles (flat, round, triangular, half-round) handle different geometry.

12. Digital Calipers

Digital calipers are non-negotiable for 3D printing. You need them to measure filament diameter, verify dimensional accuracy, check wall thickness, and design parts that fit. Buy a pair with 0.01mm resolution and keep them next to your printer.

13. Tweezers (Long Nose)

Long-nose tweezers help remove small strings, blobs, and support material from tight spaces. They are also essential for removing stuck filament from the nozzle area during maintenance. Heat-resistant ceramic tweezers are ideal if you work near the hot end frequently.

14. Hex Key Set (Metric)

Most 3D printers use metric hex bolts. A ball-end hex key set covers maintenance, assembly, and modifications. The ball-end design lets you access bolts at angles, which is often necessary in tight printer frames. Sizes 1.5mm through 5mm cover almost every 3D printer.

Nozzles and Hot End

15. Hardened Steel Nozzle

A hardened steel nozzle is necessary when printing abrasive filaments like carbon fiber, glow-in-the-dark, or metal-filled. Brass nozzles wear quickly with these materials, enlarging the orifice and degrading print quality. Hardened steel lasts much longer, though it has slightly worse thermal conductivity than brass.

16. Nozzle Cleaning Kit

A nozzle cleaning kit with acupuncture needles, brass wire brush, and cold-pull filament saves you from replacing nozzles unnecessarily. Most "clogged" nozzles just need a good cleaning. I clean my nozzles weekly as preventive maintenance.

17. Brass Nozzle Variety Pack

A brass nozzle variety pack with 0.2mm, 0.4mm, 0.6mm, and 0.8mm sizes lets you match nozzle size to your print needs. 0.2mm for fine detail work, 0.6mm for fast functional prints, 0.8mm for large structural parts. Swapping nozzles is one of the easiest ways to dramatically change your print capabilities.

Post-Processing

18. Sandpaper Variety Pack

A sandpaper assortment from 120 to 2000 grit handles all post-processing needs. Start with 120-200 grit to remove layer lines, progress through 400-800 for smoothing, and finish with 1000-2000 for a polished surface ready for painting. Wet sanding with the finer grits produces the best results on PLA.

19. CA Glue (Super Glue) Set

CA glue in thin, medium, and thick viscosities handles assembly of multi-part prints, repair of broken pieces, and gap filling. Thin CA wicks into joints for invisible bonds. Medium fills small gaps. Thick bridges larger gaps and can be accelerated with activator spray. Essential for any multi-part project.

20. Spray Primer

Filler primer spray fills small layer lines and provides a uniform base for painting. Two coats of primer, lightly sanded between coats, transforms a 3D print into something that looks injection-molded. Essential for cosplay props and display pieces.

Workspace and Organization

21. Silicone Mat

A heat-resistant silicone mat under your printer protects the desk surface from heat, drips, and vibration. It also makes cleanup easier — small filament pieces and debris collect on the mat instead of scattering across your desk. The non-slip surface keeps the printer stable.

22. LED Light Strip

Good lighting makes a huge difference for print monitoring and quality checking. A USB-powered LED strip mounted above or around your printer illuminates the build area without shadows. Most printer-mounted cameras benefit from additional lighting too.

23. Enclosure (for Open Frame Printers)

A printer enclosure enables ABS/ASA printing on open-frame printers, reduces noise, and keeps dust away from your prints. Even for PLA-only users, an enclosure reduces drafts that can cause warping on large prints and keeps the workspace cleaner.

24. Label Maker

This sounds mundane but a label maker transformed my filament organization. Every filament container gets a label with the brand, material, color, and date opened. When you have 20+ rolls of filament, being able to quickly identify what you need saves time and prevents errors.

25. Raspberry Pi (for OctoPrint/Klipper)

A Raspberry Pi 4 opens up a world of printer management options. Run OctoPrint for remote monitoring and control, or use it as a Klipper host for firmware upgrades. The investment is small and the capability it adds is enormous. The OctoPrint documentation and Klipper documentation provide setup guides.

Bonus: Free Accessories You Can Print

Before buying everything on this list, check 3DSearch for printable alternatives. Many common accessories have free 3D printable versions:

• Filament spool holders and guides
• Tool holders and organizers
• Filament clips
• Cable management clips
• Spool-mounted filament guides
• Nozzle storage racks

Printing your own accessories is one of the most satisfying uses of a 3D printer — using your machine to make itself better.

Final Thoughts

You do not need everything on this list to start printing. A PEI build plate, flush cutters, IPA, calipers, and a filament dryer cover the essentials. Add tools and accessories as your needs grow and your projects become more demanding. The beauty of 3D printing is that the hobby scales with your ambition.

Happy printing!