Print long enough and the novelty wears off. The articulated dragons and Benchy hulls pile up, and you start chasing something quieter and more durable: objects you actually reach for every day. That’s the angle behind The 20 MOST Useful 3D Prints I Can’t Live Without, in which Jonathan Levi of The Next Layer rounds up the practical models that have earned permanent spots in his home and shop. Levi started the channel in 2022 after a career in tech and ecommerce, and it has since grown into one of the more education-minded corners of the hobby — tutorials, comparisons, and unhyped opinion rather than pure spectacle.
What the video covers
The premise is a curated countdown of functional prints — the organizers, holders, tools, and household fixes that justify keeping a printer on the desk in the first place — rather than the usual gallery of decorative showpieces. Each pick is framed around why it stuck around and stayed in rotation, which is more useful than a generic “cool things to print” list. We’re pointing you to Levi’s own rankings rather than restating his specific 20; the value of the video is hearing why a maker who prints constantly keeps coming back to these particular parts.
The bigger picture: functional printing is the real case for owning a machine
The strongest argument for a desktop 3D printer was never the figurines — it’s the steady accumulation of small, specific objects that you can’t easily buy: a bracket sized to your exact shelf, a drawer insert for an oddly shaped tool, a replacement knob for an appliance the manufacturer stopped supporting. “Useful print” roundups have become a genre precisely because the catalog of free, ready-to-print functional models has exploded over the past few years, scattered across repositories like Printables, Thingiverse, MakerWorld, and Cults. The hard part is no longer finding models; it’s filtering the genuinely worthwhile from the thousands that look clever and never get printed twice. A curated list from someone who prints daily is a practical shortcut through that noise.
What to watch for
- Treat it as a starting list, not gospel. What’s a daily-driver for one maker depends on their desk, kitchen, and workshop. Use the video to find categories of useful prints, then hunt down the version sized to your own gear.
- Match the material to the job. Many functional parts want PETG, ASA, or a reinforced filament for heat or impact resistance rather than plain PLA, which softens in a hot car or sunny window. Check what a model’s designer recommends before committing a long print.
- Mind print orientation and tolerances. Holders, clips, and snap-fit parts live or die on layer adhesion and fit. A print that fails as a wall hook in one orientation often succeeds rotated, and a clip that’s too tight usually just needs a small tolerance tweak in the slicer.
- Check the license before you remix or sell. Most repository models carry Creative Commons terms; non-commercial and share-alike conditions matter if you plan to modify a design or sell prints of it.
More from The Next Layer: learning to design your own
The natural next step after exhausting other people’s models is making your own. Levi’s 12 CAD Skills I WISH I Knew Sooner! walks through modeling habits and techniques aimed at getting past the beginner wall. That progression — from downloading functional prints to designing them — is the throughline of his channel, and it’s where 3D printing stops being a consumption hobby and starts being a fabrication tool. CAD has a famously steep early curve regardless of which package you choose (Fusion, Onshape, FreeCAD, and the parametric, sketch-driven workflow common to them), so a “wish I’d known sooner” framing is a reasonable place for a self-taught maker to start.
Credit: All footage by Jonathan Levi / The Next Layer. We summarize and embed creators’ work to point you to the original — watch the full videos and subscribe on The Next Layer’s YouTube channel. We have not viewed the videos in full; this overview describes their stated scope and adds general 3D-printing context, not a scene-by-scene account or Levi’s specific picks.
