Best 3D-Printed PACKOUT Accessories for 2026

The Milwaukee PACKOUT system is one of the best modular storage platforms built for the trades, but Milwaukee only makes so many organizers. That gap is exactly why 3D-printed PACKOUT accessories have exploded in popularity. If you run cordless tools, caulk guns, spray cans, or loose batteries out of a truck or a shop, there is almost certainly a printed holder that fits your exact tool and snaps cleanly onto a PACKOUT panel or tote.

The appeal is simple. A good 3D-printed accessory solves a problem that no factory part addresses, it costs a fraction of a metal aftermarket bracket, and it can be designed around the precise geometry of a specific tool. The catch is that not all printed parts are created equal. The difference between a holder that lasts for years on a jobsite and one that warps in a hot truck or cracks the first time you drop a drill into it comes down to three things: the material it is printed from, the quality of the print itself, and how the retention is engineered.

This guide breaks down what actually matters in a 3D-printed PACKOUT accessory, names the best options by category, and gives you an honest comparison of buying a finished part versus printing your own STL files. The goal is to help you build a system you can trust, whether you own a printer or not.

 

What to look for in a 3D-printed PACKOUT accessory

Before you spend money or filament, learn to judge a part the way a maker does. Four factors separate a holder you can rely on from one that ends up in the trash.

Material

Material is the single most important variable in a printed jobsite part. The three common filaments behave very differently:

  • ABS is tough and heat-resistant, but it is finicky to print well, it can warp during printing, and it off-gasses styrene, so quality varies wildly from one maker to the next and it’s dangerous to print without ventilation.
  • PLA prints easily and beautifully and is the most common material, but it is the wrong choice for vehicles. It softens and deforms in heat that a parked vehicle hits regularly in summer.
  • PETG is the right call for tools and vehicles. It resists heat, shrugs off impact, and flexes slightly instead of shattering. It is the material ClearLine3D uses for every part.

Print and layer quality

A holder is only as strong as its weakest layer. Look for solid layer adhesion (no visible gaps or delamination between layers), an infill density appropriate to the load, and clean perimeters. A part with too few perimeters, too little infill, or printed too fast or too cold will split along its layer lines under stress, usually at the worst possible moment.

Print orientation

The direction that something is printed matters immensely, and it’s where a lot of makers and designers fall down. Parts are strongest parallel to the print bed, where a continuous layer of plastic bonds together. If you print something in the wrong orientation, it can simply snap, where-as a part that’s printed with orientation in mind, from a designer who understands this, will stand up to use and abuse.

Fit tolerance

PACKOUT compatibility lives or dies on tolerance. The cleats, feet, and mounting geometry have to match Milwaukee's spec closely enough to lock in without forcing, but not so loose that the accessory rattles or pops off. Well-designed parts account for the slight dimensional variation inherent in printing, so they seat firmly every time.

** A quick note on tolerance: Milwaukee has changed their tolerances from generation to generation on wall plates, batteries and other accessories. ClearLine3D evaluates these challenges, and makes the best decisions about possible tradeoffs when designing parts to accommodate as many generations of models as possible. Always make sure you read our product descriptions for fitment and compatibility call-outs. 

Retention design

Holding a tool is not the same as retaining it. Good retention uses the tool's own shape, a friction fit, a positive snap, or gravity working with a backstop, so the tool stays put when the tote gets carried, tossed in a truck bed, or bounced down a gravel road. Retention is where thoughtful design earns its keep. (ClearLine3D Battery Holders and our SNAP line are a good example of this.)


The best 3D-printed PACKOUT accessories by category

Here are the standout picks, organized by the job they do. Every one is printed in PETG and built around real tool geometry.

Battery holders

Loose batteries are a mess and a safety issue. They roll around, short against metal, and you can never find a charged one. The M18 Battery Holder mounts your batteries to a PACKOUT panel or wall so every battery has a home and sits at an easy to grab angle. The rail geometry matches the M18 battery foot, so batteries slide on strongly, and the retention features give a confident click and keep your battery staying put through transport.

Tool holders

This is the deepest category, because everyone carries drills and drivers differently. A few picks cover most setups:

  • The Vehicle Ready M18 Tool Holder is built to keep full-size M18 drills and drivers secure even in a moving vehicle, with retention tuned for the weight of a brushless tool.
  • The Vehicle Ready M12 Tool Holder does the same for the smaller M12 line, sized so compact tools do not slop around in an oversized cradle.
  • The M18 SNAP Tool Holder uses a positive snap-in design for quick one-handed grab-and-go, ideal when you are optimizing under shelf or wall space and need a little more of a custom solution. 
  • The Triple Drill & Driver Holder lines up three tools side by side, perfect for a drills, drivers, and keeping them in place even in a vehicle. All while maximizing space.

Consumable holders (the under-served niche)

This is where 3D printing genuinely shines, because Milwaukee makes almost nothing here and neither does the wider aftermarket. If you do trim, paint, mechanical, or any work that burns through consumables, these fill a real gap:

  • The Vehicle Ready Caulk Holder keeps a caulk or adhesive tube upright and secured instead of rolling across the floor of your van.
  • The Spray Can Holder mounts aerosols (lubricant, marking paint, solvent) to a PACKOUT surface so they travel safely and stay within reach.
  • The on-tool M18 Magnetic Bit Holder keeps driver bits accessible and screws organized on a magnetic face, so the one bit you need is not buried at the bottom of a pouch.

Mounting

The accessories are only as useful as what you mount them to. The PACKOUT Wall Cleat lets you hang PACKOUT-compatible holders on a shop wall, a van wall, or a trailer panel, turning vertical space into organized storage. It is the foundation for building out a fixed station rather than living entirely out of stacked totes. ClearLine3D cleats are thinner than OEM packout plates, and cheaper, allowing you to save precious inches in your setup, and some money in your wallet. 

You can browse the full lineup on the All Products page to match holders to the exact tools you run.

 

Buy vs. print it yourself

If you own a 3D printer, the honest answer is that printing your own PACKOUT accessories can absolutely make sense. Plenty of free and paid STL files exist, and there is real satisfaction in dialing in a print and watching it snap onto a tote. We are makers too, so we will not pretend otherwise. Here is the balanced version.

When printing your own makes sense:

  1. You already own a reliable printer and have it tuned.
  2. You enjoy the process and treat it as a hobby, not just a cost calculation.
  3. You want a one-off custom holder for an oddball tool and are willing to model or modify it.
  4. You stock the right filament (PETG, not the PLA in most beginner kits).
  5. You can design your own files, and have the time to do so, or can find one for your needs. This is particularly useful when you need many of a single print. 

The real costs people forget:

  • The printer itself. A capable printer is a few hundred to a few thousand dollars before you print a single part. That cost only amortizes if you print a lot.
  • Filament and waste. Filament is cheap per part, but failed prints, supports, and brims add up, especially while you are learning. Furthermore, unused filament soaks up water and requires a dryer to ensure your next print will be successful.
  • Time. A solid tool holder can take several hours to print, plus slicing, bed prep, and post-processing. Multiply that across a full PACKOUT buildout.
  • Failed prints. Warping, layer splits, nozzle jams, and bed-adhesion failures are normal, and a failed PETG print at hour four stings.
  • Dialing in the right settings. Layer height, print orientation, bed adhesion, z-offset, extrusion multipliers, perimeter count, infill percentage…and the list goes on. Getting strong, heat-tolerant PETG parts takes tuning that beginners rarely nail on the first try.

When buying a finished part makes sense:

  1. You do not own a printer, or you do not want to maintain one.
  2. You value your time and want to spend it elsewhere, more than the marginal filament savings.
  3. You want a part that is already validated for fit, strength, and heat tolerance, with no failed prints on your dime.
  4. You need it to work the first time, in a truck, in the summer, without becoming a science project.

Both paths are legitimate. The maker route trades money for time and tinkering. The finished-part route trades a higher per-piece price for a known-good result and zero learning curve. A lot of people do both: print the fun experiments themselves and buy the holders they cannot afford to have fail.


Made in the USA

ClearLine3D parts are made in California, printed and finished in small batches rather than mass-injection-molded overseas. That matters for a couple of reasons beyond a flag on the box.

Small-batch domestic manufacturing means tighter quality control, because parts are inspected by the people who make them, not pulled from a container of thousands. It means the designs can iterate quickly when a tool changes or a customer flags a better way to do something. And buying from a domestic small-batch maker keeps your money supporting a real shop rather than an anonymous overseas line. You get a part dialed in for the conditions American tradespeople actually work in, from a maker you can reach.

 

Frequently Asked Questions

Are 3D-printed tool holders durable?

Yes, when they are made from the right material and printed well. A PETG holder with solid layer adhesion and appropriate infill stands up to daily jobsite use, including drops, vibration, and the weight of full-size cordless tools. Durability problems almost always trace back to a weak material like PLA, low infill, or poor print quality, not to 3D printing as a method. A well-engineered PETG part is genuinely tough.

Will PETG melt in a hot truck?

No. PETG tolerates the heat of a parked vehicle far better than PLA, which is the filament that actually fails in those conditions. A hot truck interior can climb high enough in summer to soften and deform PLA, but PETG holds its shape and its grip. This is precisely why ClearLine3D uses PETG for every accessory: it is built to survive the vehicle, not just the shop bench.

Is it cheaper to print my own PACKOUT accessories?

It depends on what you already own. If you have a tuned printer and the right filament on hand, the per-part filament cost is low, so a one-off can be cheap. But once you factor in the price of the printer, failed prints, the right material, and the hours of print and setup time, the math is closer than it looks, especially for a full buildout. For most people without a printer, buying a finished, validated PETG part is the better value because it works the first time with no equipment to buy or maintain.


Ready to organize your kit? Shop made-in-California, PETG 3D-printed PACKOUT accessories on the ClearLine3D All Products page and build a system that survives the truck.

 

Milwaukee and PACKOUT are registered trademarks of Milwaukee Electric Tool Corporation. ClearLine3D is not affiliated with, sponsored by, or endorsed by Milwaukee.

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