For large-format professional resin
Formlabs Form 4L
A large-format professional Low Force Display SLA resin printer with a 353 × 196 × 350 mm nominal build volume, full-plate prints advertised in under 6 hours per Formlabs.
Documentary analysis · Not personally tested
Specification sources reviewed 2026-09-12. These are manufacturer claims, not measurements by Find My 3D Printer.
Why consider it?
A build volume 4.6 times larger than the Form 4 with the same Low Force Display technology, 145 LEDs and collimating lenses, a 46 µm pixel with anti-aliasing, and XY tolerances advertised at ±0.15% per Formlabs.
What to verify
A footprint this large needs a dedicated workspace and scaled-up post-processing gear; exact bundle contents (Complete Package or otherwise) should be checked on the retailer's listing.
The specifications that matter
- Process
- Resin
- Nominal build volume
- 353 × 196 × 350 mm
- Enclosure
- Protective cover, not a thermal chamber
- Multicolor
- One resin cartridge at a time; no automatic color or material switching.
- Materials
- A Formlabs resin library (Tough 1500, Clear, High Temp, Silicone 40A, rigid, flame retardant, ceramic, biocompatible) plus an Open Material Mode for developers per Formlabs.
Allow room for supports and the chosen orientation. Confirm the exact nozzle, feeder, included accessories and installation clearance against the manual and seller’s listing.
Which projects is it for?
The Form 4L carries the Form 4's Low Force Display architecture onto a much bigger plate, with a 353 × 196 × 350 mm nominal build volume per Formlabs, 4.6 times the Form 4's volume. It suits large single-piece prints, batches of mid-size parts on one plate, or short-run manufacturing where reprinting a failed job on a smaller machine would cost too much time.
Formlabs advertises full-volume prints completing in under 6 hours, keeping production times workable for professional use despite the larger footprint, which matters for teams running the printer overnight or across shifts.
Materials and setup
The backlight unit steps up to 145 LEDs with collimating lenses and a 46 µm pixel with anti-aliasing per Formlabs, keeping curing uniform across a surface much larger than the Form 4's.
The resin library covers engineering prototyping (Tough 1500, rigid), biocompatible, ceramic, flame-retardant, and soft silicone resins, with an Open Material Mode for developers qualifying their own resins.
What the bundle includes or not
The Complete Package bundles the printer with Formlabs' starter accessories; exact contents (cartridges, build platform, post-processing kit) should be checked on the retailer's listing before buying.
A footprint this size calls for workspace and wash/UV cure stations sized accordingly, which need to be budgeted for separately from the printer itself.
Alternatives to compare
For a smaller footprint with the same technology, the Form 4 covers needs that don't require this large a plate. For large-format resin on a tighter budget, the Saturn 3 Ultra is worth comparing.
The resin printer buying guide helps judge whether the Form 4L's large format is worth the budget and floor space it requires.
Sources and limits
We have not measured noise, real printing speed, accuracy or reliability. Manufacturer images do not establish the contents of the selected bundle.