Accessories, Tools, and Upgrades for 3D Printing

This list purposely skips the complimentary (and obligatory) 3D prints you can make yourself to improve your workflow—like the filament "poop bin" or the cable chain guides. Instead, this focuses on the physical hardware and tools you will likely end up buying separately, hopefully sooner rather than later.

1. Filament Storage and Drying Solutions

If I had to make a top 10 list of 3D printing accessories, filament storage would easily take up the first five slots.

Moisture is the absolute enemy of 3D printing. Even standard PLA can suffer if left out in a humid room, though the negative effects are much more obvious when printing PETG and TPU.

Filament Dryers: Investing in an active filament dryer is highly recommended to bake the moisture out of your spools before printing.
Airtight Containers: For long-term storage, use airtight bins. Make sure they have a rubber gasket seal. While they cost two to three times more than regular plastic containers, they are absolutely worth it to prevent brittle filament and stringy prints.
Desiccant Management: Invest in color-changing, reusable desiccant beads. You can even print a custom enclosure to actively lock humidity away from your filament while it sits on the machine.

Take note: Once a filament is "wet," only a heated filament dryer can restore it. Leaving it outside in the sun doesn't really help and can actually ruin the plastic through UV degradation.

2. The Hardened Steel Nozzle Upgrade

Out of the box, most entry-level 3D printers come equipped with a standard stainless steel nozzle. While great for standard filaments, this steel is too soft for abrasive materials.

If you buy the optional Hardened Steel Nozzle (which usually only costs around $11–$13), you instantly unlock new capabilities:

Print Carbon Fiber (PLA-CF / PETG-CF): The hardened nozzle can handle rough, abrasive carbon particles without wearing down the nozzle tip. This allows you to print highly textured, stiff, and matte-finished parts without destroying your hardware.
Matte Filaments: Even standard PLA Matte is slightly more abrasive than its glossy counterpart, making the hardened nozzle a safer long-term bet.

The Gotcha: Hardened steel doesn't conduct heat quite as efficiently as standard steel or brass. When you upgrade, you generally need to increase your nozzle temperature by 5 to 10 degrees to get the same flow results.

3. Quick-Swap Hotends and Nozzle Variations

Apart from upgrading the material of your nozzle, you might also want to stock up on different nozzle sizes. While your stock 0.4mm nozzle can technically print many of the same things as a 0.2mm or 0.8mm nozzle, the real differences lie in detail and speed.

0.2mm Hotend: If you plan on printing miniatures, D&D figures, or anything with small, recessed text, the 0.2mm nozzle is a game-changer. It significantly increases print time, but the level of detail it unlocks is incredible.
0.6mm / 0.8mm Hotend: If you are printing functional brackets, Gridfinity storage boxes, or large mechanical parts, a wider nozzle allows you to push thick layers and finish prints incredibly fast.

4. Extra Build Plates for Faster Workflows

Buying a second build plate—even if it is identical to your current PEI plate—is one of the best workflow upgrades you can make.

When a print finishes, the PEI plate needs to cool down before the part releases easily. Instead of waiting and leaving your printer idle, you can simply pull off the finished plate, immediately slap on your second plate, and start your next print. (Yes, the second plate needs to heat up, but the printer heats the bed significantly faster than it takes for a hot bed to naturally cool down).

The Gotchas: First, when swapping plates, you really need to run the auto bed leveling routine before every print. You can skip it, but it's rarely worth the risk of a failed first layer. Second, the A1 Mini doesn't automatically detect which build plate you’ve installed. You have to set it manually in your slicer (e.g., Textured PEI, Smooth PEI, or Cool Plate) before you hit print.

5. Isopropyl Alcohol (99%) + Glue Stick

This isn't a hardware upgrade, but it is the most essential maintenance kit you can own. The number one cause of print failures and warping is invisible oil left on the PEI plate from your fingers.

99% IPA and Microfiber: Keep a spray bottle of high-percentage Isopropyl Alcohol and a stack of lint-free microfiber cloths next to your printer.
The Golden Rule: Never touch the center of your build plate. Wipe it down with IPA every 3 to 5 prints to ensure perfect bed adhesion. (Note: Do not use paper towels, as they leave micro-dust behind).

While microfiber is the most recommended, I actually just get by using dried-out (unused) wet wipes, and it works perfectly fine. However, if you wipe with IPA and are still getting bed adhesion problems, you are better off taking the plate to the sink, washing it with warm water and dish soap, and letting it dry.

The Magic of Glue Sticks A glue stick is also a lifesaver. This might not be obvious if you only print PLA, but if you try printing PETG or TPU, you'll absolutely need one. These materials—especially prints with wide bases—stick so aggressively to PEI that they can ruin the bed. I've already scratched parts of my plate trying to scrape a stubborn print off. A generic Elmer's Glue stick acts as a perfect release agent.

The only downside to using a glue stick is the cleanup. It takes two or three times more washing to fully scrub the glue residue off your bed compared to printing without it.

6. An Uninterruptible Power Supply (UPS)

While a UPS is obviously helpful for any electronic hardware, it is critical for a 3D printer.

Many modern printers have a "Power Loss Recovery" feature to resume a print after an outage. However, the real danger of a sudden shutdown is heat creep. When the power cuts out, the hotend cooling fan stops spinning. Without the fan, the 220°C heat from the nozzle block rises straight up into the cold zone of the extruder. This melts the filament where it isn't supposed to melt, causing massive clogs that can ruin your print head.

This same rule applies if you flip the power switch on your printer immediately after a print finishes without letting it run its automatic cooldown cycle. While it might not break your printer on the first attempt, the damage adds up, and it will eventually ruin a print when you least expect it.

7. PTFE Tube Maintenance and Upgrades

Whether you are running single colors or dealing with an AMS system for multi-color prints, managing your PTFE tubes is critical for preventing filament jams.

Sizing and Quality

Do not cheap out on PTFE tubing. You need specialized tubes with a high heat threshold and consistent internal clearance; cheap alternatives will give you inconsistent extrusion results.

The Golden Dimensions: For Bambu Lab printers, the standard specification you need to look for is a 4mm outer diameter (OD) and a 2.5mm inner diameter (ID). That slightly wider 2.5mm ID reduces friction as the filament travels to the toolhead.

Cutting and Insertion Technique

Cut Straight: Always cut your PTFE tube perfectly straight across. Never cut it on a diagonal, as this can cause the filament to catch on the edges inside the fitting.
The Tug Test: When inserting the new tube into the pneumatic fittings, push it in firmly until it completely bottoms out. Then, give it a very slight tug. This ensures the internal metal "teeth" of the fitting have properly locked onto the tubing.

Direct Feeding vs. Tubing

In almost all normal printing scenarios, you cannot feed filament directly into the toolhead without a PTFE tube guiding it. The only real exception to this rule is when you are performing a "cold pull" to clear a clog, where you manually feed the filament straight down into the hotend.

A Note on Pneumatic Fittings

If you ever notice the black pneumatic connector failing to grip the tube, or if the tube constantly pops out during retractions, do not just replace the tube. This means the internal teeth of the fitting have failed. You need to buy a new pneumatic fitting. Thankfully, these are cheap, generic parts that are easily swapped out.