One base, nine attachments, zero new holes — 3D Print Pick (June 2)
TIDY WALL | 9 Interchangeable Organizers by AF_Inventions (Cults3D, June 1 2026) is a modular bathroom wall system with a universal dovetail base and nine swappable attachments — toothpaste roller, toothbrush holder, towel holder, razor dock, Oral-B mount, two hook sizes, trinket tray, and magnetic base. The listing earned the Best badge within 24 hours. Commercial resale requires a Thangs MASTER ($13.50/mo annual) or PRO ($37.50/mo) membership. A mid-complexity single attachment priced at $28 on Etsy yields an estimated 69–74% gross margin.
Today's pick is TIDY WALL | 9 Interchangeable Organizers by AF_Inventions, published on Cults3D on June 1, 2026. 1 The STL pack costs $4.67; commercial resale rights require a Thangs membership — $13.50/month (MASTER tier, annual billing, up to 12 downloads per month) or $37.50/month (PRO tier, unlimited downloads). 2
The listing earned a 🏆 Best badge within its first 24 hours of publishing, with 687 views, 4 likes, and 2 downloads at time of research — strong early signal for a brand-new upload. 1
What it is
TIDY WALL is a modular bathroom wall system built around a universal dovetail base. You fix the base to the wall once — with screws or heavy-duty double-sided tape — and then click any of the nine included accessories on or off without touching the wall again. Designer AF_Inventions frames the problem directly: "Tired of drilling holes every time you want to change your bathroom accessories?" 1
The nine attachments are: 1
- Toothpaste Roller — turn the knob, squeeze out every last drop (3 parts: base, key, spring)
- Hygiene Toothbrush Holder — front cover keeps brushes dust-free; detaches for rinsing
- Grabber Towel Holder — roller-ball design grips the towel without a clip
- Razor Dock — dedicated slot keeps the razor off the counter
- Oral-B Head Mount — slots sized for electric toothbrush replacement heads
- Single Hook — for loofahs or small hand towels
- Double Hook — bathrobes or two towels
- Trinket Tray — flat tray for rings and earrings during face-washing
- Magnetic Base — embedded 10×2 mm magnets hold nail scissors, tweezers, and bobby pins (magnets not included)
The ZIP download contains 16 STL files, one BambuLab 3MF preset (
TIDY WALL - PRINT ME! (BAMBULAB).3mf, compatible with BambuStudio, CrealityPrint, and PrusaSlicer), plus a HOW TO PRINT.pdf and a READ ME! - THANKS.pdf. The 3MF is the authoritative print configuration source. 1
Print settings
The 3MF preset inside the download is the definitive reference. The page tags the model as No support and Print in place, meaning most parts print flat with no support structures required. 1 The settings below are reasonable defaults for a 0.4 mm nozzle; confirm against the PDF before committing to a full batch:
| Parameter | Recommended | Notes |
|---|---|---|
| Layer height | 0.2 mm | 0.15 mm for Toothpaste Roller spring |
| Infill | 20% | Gyroid or grid |
| Walls | 3 | 4 for the dovetail base mount |
| Supports | None | Most parts print flat |
| Bed adhesion | Brim (5 mm) | Dovetail base has small contact area |
| Material | PLA or PETG | PETG for humid environment |
| Nozzle temp | 200–215 °C (PLA) / 230–245 °C (PETG) | Per filament spec |
| Bed temp | 60 °C (PLA) / 70–80 °C (PETG) | — |
Author estimates for planning. Follow the included 3MF / PDF for final settings.
Estimated print time per attachment: 45 minutes–2.5 hours depending on the part. The Toothpaste Roller (3-part assembly with a spring mechanism) is the most complex; the hooks and tray print in under an hour each. The dovetail wall mounts print fast — plan on batching several bases at once to minimize per-unit setup time.
Difficulty: beginner–intermediate. Individual attachments are straightforward FDM prints. The Toothpaste Roller spring requires tighter tolerance — test at small scale before a production run. The magnetic base requires pressing two 10×2 mm magnets into the cavities after printing; check polarity before pressing.
Filament suggestions
PLA works for most bathrooms, but PETG holds up better in rooms that run consistently humid (steam showers, small bathrooms with poor ventilation). The designer's reference photos show the system in matte black — it reads cleanly against light-colored tile, which is common in bathroom listing photography.
Practical color directions:
- Matte black — designer's own reference build; neutral, photographs well against both white and gray tile
- Matte white or light gray — fits Scandinavian/minimalist bathroom aesthetics, a reliable Etsy search cluster
- Matte dark green — picks up on the biophilic bathroom trend (popular in 2025–2026 Etsy bathroom listings)
- Two-tone (base in one color, attachments in another) — creates visual system cohesion; buyers can reorder attachments in a coordinating accent color
For PETG, eSUN and Polymaker both have wide matte-adjacent color options at the ~$22–$25/kg range that hold dimensional accuracy well enough for the dovetail fit.
Who buys this and what to charge
On Etsy, the 3D-printed bathroom organizer category runs wide: wall-mount toothbrush holders sit at $9–$21.99, Oral-B-specific mounts land around $26.30, and bathroom organization sets (multi-piece) reach $27.50–$37.00. 3 4
The buyer for TIDY WALL is someone who has already committed to wall-mounting their bathroom accessories and doesn't want to re-drill every time they change their mind. That's a narrower buyer than "bathroom organizer" but a more motivated one — they're solving a specific frustration, not just decorating.
Three listing angles that work here:
- Starter kit — sell 2–3 bases + the buyer's choice of 2–3 attachments as a bundle. Etsy comps for bathroom sets at $27–$34 give room to price this at $26–$32 depending on attachment count.
- Single attachment — list each attachment individually at $9–$14 as low-commitment entry points. Buyers who like the base can come back for more.
- Upsell model — list the base kit cheap ($18–$22) and offer individual attachment add-ons. Works well if you're also doing Etsy messaging or a follow-up email.
Etsy keywords to test: modular bathroom organizer, wall mount toothbrush holder, 3D printed bathroom accessories, no drill bathroom organizer, bathroom wall system, interchangeable bathroom hooks.
Cost model
Assumptions: PETG at $24/kg; per-unit filament estimated at 35–80 g depending on the attachment (hook = ~30 g, toothpaste roller set = ~75 g); MASTER tier at $13.50/month amortized across 12 units/month (matching the tier's download limit); STL one-time cost of $4.67 amortized across 40 units; sold at $28.00 on Etsy. Etsy fees per published schedule. 5
Modeled on a mid-complexity attachment (Toothbrush Holder or Razor Dock, ~50 g):
| Cost item | Low | High |
|---|---|---|
| PETG filament (~50 g) | $1.10 | $1.40 |
| Electricity / machine wear | $0.75 | $1.25 |
| Packaging | $1.00 | $1.75 |
| Material subtotal | $2.85 | $4.40 |
| Thangs MASTER ($13.50/mo ÷ 12 units) | $1.13 | $1.13 |
| STL cost ($4.67 ÷ 40 units) | $0.12 | $0.12 |
| License/file amortization | $1.25 | $1.25 |
| Etsy listing fee | $0.20 | $0.20 |
| Etsy transaction fee (6.5% of $28.00) | $1.82 | $1.82 |
| Etsy payment processing (~3% + $0.25) | $1.09 | $1.09 |
| Etsy fees subtotal | $3.11 | $3.11 |
| Total cost | $7.21 | $8.76 |
| Net at $28.00 list price | $20.79 | $19.24 |
| Gross margin | ~74% | ~69% |
Two variables that move this:
- Volume against the MASTER tier: MASTER allows 12 downloads/month across the designer's catalog. If you're selling 12 different attachment variants, that's one STL download used per variant — but you can print each STL as many physical units as you need per month under the commercial license. If you need more than 12 STL downloads/month (e.g., you're constantly adding new designs from AF_Inventions), upgrade to PRO. At $37.50/month vs. $13.50/month, the $24 difference is worth it once the download cap becomes a regular constraint.
- Magnetic Base parts cost: The Magnetic Base requires two 10×2 mm magnets (~$0.10–$0.20 total from bulk magnet suppliers). Add this to the cost model if you're selling that attachment.
Commercial license — what you actually need
The Cults3D page is marked CULTS PU (personal use only). Selling prints requires an active Thangs membership with AF_Inventions. 2
| Tier | Price (annual billing) | Downloads/month | Resale rights | Extras |
|---|---|---|---|---|
| MAKER | $6.00/month | 4 | Personal use only — no resale | — |
| MASTER | $13.50/month | 12 | Commercial (sell physical prints) | Reseller directory map, Discord photos/video access |
| PRO | $37.50/month | Unlimited | Commercial (sell physical prints) | Reseller map + 1 custom model request |
AF_Inventions states: "If you would like to sell my models please join my Thangs Membership." 2 All tiers are annual billing with 25% discount applied (monthly billing rates: MAKER $8, MASTER $18, PRO $50). The license is active only while the subscription continues — confirm current resale terms at the membership page before listing.
One thing to flag: the MASTER tier covers 12 downloads across AF_Inventions' entire catalog on Thangs, not 12 per design. If you're pulling multiple designs from the same designer, that quota goes faster than it looks.
Designer background
AF_Inventions (ALFI) runs a focused home-accessories catalog on Cults3D: 119 designs, 19,600 downloads, 1,500 followers, with badges including Influencer, Popular, and Seller. 6 On Thangs the numbers are larger — 29,000 downloads and 7,800 followers. 2 Most designs are priced at $4.67 with a handful of more complex releases at $6.99–$7.01. That pricing consistency across 119 designs signals a designer who ships at volume rather than holding a few SKUs at premium price — useful context if you're considering a longer-term subscription relationship.
Get the files
STL purchase ($4.67). Commercial license via Thangs MASTER or PRO membership — confirm current terms before listing.
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Cover image from TIDY WALL | 9 Interchangeable Organizers by AF_Inventions on Cults3D
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