FLSun V400 build volume: 300 × 300 × 410 mm — what fits, and how to print what doesn't
Quick answer: the FLSun V400 prints objects up to 300 × 300 × 410 mm (X × Y × Z, that is width × depth × height) — 36.9 litres, which ranks #29 of 152 printers in the dataset. The largest cube is 300 mm; a thin flat part can reach about 414 mm along the bed diagonal. Anything bigger is split into pieces with connectors — the splitter has a FLSun V400 preset.
What the numbers mean for your model
Build volume is quoted as the box the nozzle can reach, X × Y × Z. A model fits whole when it fits that box in some orientation, which is more forgiving than it sounds: a long flat part can lie diagonally across the 300 × 300 mm bed (diagonal 424 mm, so about 414 mm usable once a margin is left for the brim), and a tall part can stand up to 410 mm if its footprint fits. The splitter checks every orientation before it decides a model needs cutting, and reports "already fits" when it does.
When it does not fit, the number of pieces depends on which axis overflows. If only the longest dimension is too big, this is what a FLSun V400 needs, allowing a 2 mm margin per piece:
| Model's longest side | On the FLSun V400 | Piece length |
|---|---|---|
| 250 mm | fits whole | — |
| 300 mm | fits whole | — |
| 400 mm | fits whole | — |
| 500 mm | 2 pieces | 250 mm each |
| 600 mm | 2 pieces | 300 mm each |
| 800 mm | 2 pieces | 400 mm each |
Pieces along the printer's longest axis (410 mm). A model that overflows two axes needs the product of the two counts — the splitter plans that automatically, and usually finds a layout with fewer pieces than the naive grid by rotating the model first.
FLSun V400 notes
The V400 is a delta with a round 300 mm bed and 410 mm of height. The preset treats the circle as a 300 × 300 mm square; a square piece that uses the full 300 mm in both X and Y will not fit a 300 mm circle (the corners overhang), so keep pieces for the V400 to about 212 mm square, or narrower in one axis. The height is the delta's strength: a 400 mm standing piece is printable where most bed-slingers need a cut.
Printers with a similar build volume
| Printer | X × Y × Z (mm) | Litres | Rank |
|---|---|---|---|
| Snapmaker 2.0 A350 | 320 × 350 × 330 | 37.0 | #28 |
| Bambu Lab H2D | 350 × 320 × 325 | 36.4 | #30 |
| Artillery Sidewinder X1 | 300 × 300 × 400 | 36.0 | #31 |
| Artillery Sidewinder X2 | 300 × 300 × 400 | 36.0 | #32 |
| Artillery Sidewinder X4 Plus | 300 × 300 × 400 | 36.0 | #33 |
| Artillery Sidewinder X4 Pro | 300 × 300 × 400 | 36.0 | #34 |
Other FLSun printers in the dataset: FLSun Q5, FLSun QQ-S Pro, FLSun Super Racer, FLSun T1 Pro.
Split a model for the FLSun V400
- Open splicestl with the FLSun V400 preset selected and drop the STL, 3MF or OBJ on the page. Nothing is uploaded.
- The split runs by itself to 300 × 300 × 410 mm minus a margin, on all three axes at once. Drag a cut handle to move a seam; Shift-click the model to mark a spot a seam must avoid.
- Pick connectors — pegs by default; dovetails, finger joints, magnet pockets, dowel holes, screw joints or your own — and download the zip: one file per piece lying flat, the connectors, a README and an assembly sheet.
Frequently asked questions
What is the build volume of the FLSun V400?
300 × 300 × 410 mm (width × depth × height), which is 36.9 litres. That is the manufacturer's stated printable volume as used by splicestl's FLSun V400 preset; the physical bed may be a few millimetres larger.
What is the largest object you can print on the FLSun V400?
A 300 mm cube fits outright. A flat part can be longer by lying on the bed diagonal: up to about 414 mm long if it is narrow and under 410 mm tall. A tall part can stand 410 mm high if its footprint is within 300 × 300 mm. Anything that exceeds these in any orientation has to be split.
How do I print something bigger than the FLSun V400's build volume?
Split it into pieces that each fit, add connectors at the cuts, print the pieces and join them. The free browser splitter at splicestl.com has a FLSun V400 preset: load the STL, 3MF or OBJ, choose the preset, and the model is cut on all three axes to fit 300 × 300 × 410 mm with pegs, dovetails or magnet pockets placed at every cut. Download gives one file per piece plus an assembly sheet.
Related
Source and changes. Dimensions are the manufacturer's published specification as recorded in the splicestl build-volume dataset (CC BY 4.0; the tool's preset table, read 13 October 2026). Derived figures (litres, diagonal, rank, piece counts) are computed from those three numbers by tools/build-printer-pages.py. Page published 31 October 2026. If the manufacturer has changed the specification, tell us and the dataset, the preset and this page change together.