For a jeweler starting out, the Elegoo Mars 5 Ultra is the pick: Elegoo lists 18 µm pixels, and Formlabs publishes settings for its castable True Cast Resin on this exact printer. The Phrozen Sonic Mini 8K S is the alternative on the same Formlabs list. A studio that wants Formlabs’ wax-filled Castable Wax Resin for fine filigree needs a Formlabs printer: the Form 4 for one bench, or the Form 4L for production batches.
Jewelry printing usually means printing a pattern in castable resin, then burning it out of an investment mold and casting metal in its place. That makes the resin the first choice and the printer the second. Formlabs makes several castable resins, and its own pages say which printers they run on. We built this page from those pages and the printer makers’ specs, read on November 7, 2026. We have not used these printers or cast these resins.
Jewelry Printers Compared
| Printer | Pixel size / XY (maker-listed) | Build volume (maker-listed) | Formlabs castable resin route | Where to buy |
|---|---|---|---|---|
| Elegoo Mars 5 Ultra | 18 x 18 µm (7-inch 9K LCD) | 153.36 x 77.76 x 165 mm | True Cast; Formlabs publishes settings | Amazon |
| Phrozen Sonic Mini 8K S | 22 µm (7.1-inch 8K LCD) | 165 x 72 x 170 mm | True Cast; Formlabs publishes settings | Search Amazon |
| Formlabs Form 4 | 50 µm pixel size | 200 x 125 x 210 mm | Castable Wax (Formlabs lists Form 4/B) | Formlabs |
| Formlabs Form 4L | 46 µm pixel size | 353 x 196 x 350 mm | Castable Wax (Formlabs lists Form 4L/BL) | Formlabs |
Formlabs pairs its pixel size with “pre-tuned anti-aliasing for subpixel resolution,” so the Formlabs and LCD-printer figures are not a like-for-like comparison.
Pick the Resin First
Formlabs’ jewelry page splits its castable resins by job: “Castable Wax Resin is optimized for fine filigree and lightweight jewelry, True Cast Resin is recommended for medium to heavy jewelry, medallions, and figurines.” It describes Castable Wax as “ideal for ultrafine structures in jewelry.”
The printer compatibility on that page lists Castable Wax Resin for Formlabs printers, including the Form 4 and Form 4L. True Cast Resin is the one that works off-brand: Formlabs’ third-party settings page says “True Cast Resin is compatible with most third-party resin 3D printers” and lists exposure settings for ten models, including the Elegoo Mars 5 Ultra and the Phrozen Sonic Mini 8K S. That list is why those two printers are here.
So the decision is simple:
- Medium to heavy pieces, signet rings, medallions: True Cast on any printer here.
- Fine filigree and lightweight pieces: Castable Wax, which means a Formlabs printer.
1. Elegoo Mars 5 Ultra: The Entry-Level Starting Point
Elegoo’s Mars 5 Ultra page lists a 7-inch 9K mono LCD, 18 x 18 µm XY resolution and a 153.36 x 77.76 x 165 mm build volume. Formlabs’ True Cast page includes settings for it.
It suits a bench jeweler or student who wants to print rings, pendants and earrings in True Cast without buying into a professional system. Its plate is the smallest here. It also appears in our miniatures printer guide , so one printer can cover both hobbies.
View the Elegoo Mars 5 Ultra on Amazon . The listing we checked was sold by ELEGOO Official US.
2. Phrozen Sonic Mini 8K S: The Alternative on Formlabs’ List
Phrozen’s Sonic Mini 8K S page lists a 7.1-inch 8K mono LCD, 22 µm XY resolution and a 165 x 72 x 170 mm build volume. Formlabs’ True Cast page includes settings for it as well.
It suits the same buyer as the Mars 5 Ultra, and it is worth a look if the Elegoo is out of stock. The Mars 5 Ultra has the finer listed XY resolution of the two.
We could not confirm an in-stock listing sold by Phrozen, so this is a labeled search: Search Amazon for the Phrozen Sonic Mini 8K S .
3. Formlabs Form 4: The Studio Printer for Castable Wax
Formlabs’ Form 4 page describes its Low Force Display technology and a “50 µm pixel size with pre-tuned anti-aliasing for subpixel resolution,” with a 200 x 125 x 210 mm build volume listed on the Form 4L page’s comparison. Formlabs’ jewelry page lists Castable Wax Resin for the Form 4.
It suits a jewelry studio or designer who sells fine filigree pieces and wants the resin, printer and print settings from one maker. It is a professional printer sold by Formlabs and its resellers; we found no Amazon listing for it, so the links on this page go to Formlabs, where current pricing is listed.
4. Formlabs Form 4L: Batch Production
The Form 4L lists a 353 x 196 x 350 mm build volume, which Formlabs calls 4.6 times larger than the Form 4, and a 46 µm pixel size. Formlabs’ jewelry page lists Castable Wax Resin for the Form 4L as well.
It suits casting houses and jewelry brands that print many patterns per run. For a single bench, the Form 4 is the more sensible size.
What Else You Need
Resin printing needs washing and curing, gloves and ventilation. Our wash and cure station guide covers the post-processing step, and our resin printer guide covers general-purpose resin printers if jewelry is not your main use. Follow the resin maker’s burnout guidance for your investment.
Sources
Read on November 7, 2026:
- Formlabs: Jewelry , True Cast settings for third-party printers , Form 4 , Form 4L
- Elegoo: Mars 5 Ultra
- Phrozen: Sonic Mini 8K S
See Also
If you want to pressure-test this shortlist, read Best 3D Printers for Carbon Fiber Filament: Hardened Nozzle Out of the Box, Best 3D Printers for TPU: Four Makers That List Flexible Filament, and Best Wash and Cure Stations, and Which Resin Printers They Fit next.
For more context beyond the main ranking, Buying a Used 3D Printer: Key Checks Before You Pay and Bambu Lab P1S vs X1 Carbon: Differences and Which to Buy add useful comparison detail.