Split a model that is too big for the Elegoo Mars 5 Ultra
The Elegoo Mars 5 Ultra prints up to 153 × 77 × 165 mm. SplitSTL splits your model into parts that fit, with pins or magnets, engraved part numbers and 3MF plates ready to slice.
Build volume of the Elegoo Mars 5 Ultra
Build plate 153 × 77 mm, height 165 mm. Keeping a 5 mm margin, each part must fit in 148 × 72 × 160 mm. Parts can be turned on the plate, so SplitSTL also picks the orientation: a long, flat object can reach about 154 mm along the diagonal.
Your model
Enter your model’s size to estimate the number of parts.
How many parts for your projects?
Minimum number of parts with a grid split, each part oriented to fit the plate (5 mm margin).
| Object | Size | Parts |
|---|---|---|
| Cosplay helmet | 240 × 280 × 300 mm | 16 |
| 50 cm vase | 250 × 250 × 500 mm | 28 |
| Life-size bust | 450 × 300 × 600 mm | 70 |
| 1 m statue | 400 × 350 × 1,000 mm | 105 |
| 1 m sword | 1,000 × 220 × 40 mm | 14 |
| 80 cm wall sign | 800 × 500 × 15 mm | 20 |
Tips for the Mars 5 Ultra
- On a resin printer, hollow large parts and add drain holes: less resin and less suction.
- Parts stay small: expect more parts than on an FDM printer and glue them with cyanoacrylate.
- Thin pins (3 to 4 mm) are enough; check the fit with the coupon, resin is less forgiving than filament.
- Tilt the parts in your resin slicer after export: the cut face is still the best orientation reference.
The same helmet on other printers
- Elegoo Saturn 4 Ultra · 218 × 123 × 220 mm · 12
- Anycubic Photon Mono M7 Pro · 223 × 126 × 230 mm · 8
Frequently asked questions
What is the maximum print size of the Elegoo Mars 5 Ultra?
The build volume of the Elegoo Mars 5 Ultra is 153 × 77 × 165 mm. Anything bigger has to be scaled down or split into several parts.
How many parts for a cosplay helmet on the Mars 5 Ultra?
A helmet of about 24 × 28 × 30 cm needs at least 16 parts on the Mars 5 Ultra with a grid split. The natural-joint split of SplitSTL Pro can follow the helmet’s design lines instead.
How do I join the printed parts?
SplitSTL drills aligned pin holes (printable pins included) or magnet pockets, and engraves each part’s number on its cut face. An illustrated assembly guide comes with the export.