QIDI Plus 4 build volume: 305 × 305 × 280 mm — what fits, and how to print what doesn't
Quick answer: the QIDI Plus 4 prints objects up to 305 × 305 × 280 mm (X × Y × Z, that is width × depth × height) — 26.1 litres, which ranks #54 of 152 printers in the dataset. The largest cube is 280 mm; a thin flat part can reach about 421 mm along the bed diagonal. Anything bigger is split into pieces with connectors — the splitter has a QIDI Plus 4 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 305 × 305 mm bed (diagonal 431 mm, so about 421 mm usable once a margin is left for the brim), and a tall part can stand up to 280 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 QIDI Plus 4 needs, allowing a 2 mm margin per piece:
| Model's longest side | On the QIDI Plus 4 | Piece length |
|---|---|---|
| 250 mm | fits whole | — |
| 300 mm | fits whole | — |
| 400 mm | 2 pieces | 200 mm each |
| 500 mm | 2 pieces | 250 mm each |
| 600 mm | 2 pieces | 300 mm each |
| 800 mm | 3 pieces | 267 mm each |
Pieces along the printer's longest axis (305 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.
QIDI Plus 4 notes
The Plus 4 prints 305 × 305 × 280 mm in a heated chamber, 26 litres. Its chamber heater and hardened extruder make it a workshop machine for engineering filaments; split functional parts for it tend to use screw joints with heat-set inserts rather than glued pegs, and the splitter's screw mode places the counterbores and insert pockets for that.
Printers with a similar build volume
| Printer | X × Y × Z (mm) | Litres | Rank |
|---|---|---|---|
| Creality K1 Max | 300 × 300 × 300 | 27.0 | #50 |
| Raise3D Pro3 | 300 × 300 × 300 | 27.0 | #51 |
| Rat Rig V-Core 3 (300) | 300 × 300 × 300 | 27.0 | #52 |
| Voron Design Voron 2.4 (300) | 300 × 300 × 300 | 27.0 | #53 |
| Creality Ender 6 | 250 × 250 × 400 | 25.0 | #55 |
| Anycubic Mega X | 300 × 300 × 305 | 27.4 | #49 |
Other QIDI printers in the dataset: QIDI i-mate S, QIDI Q1 Pro, QIDI Tech X-3, QIDI X-Max 3, QIDI X-Plus 3.
Split a model for the QIDI Plus 4
- Open splicestl with the QIDI Plus 4 preset selected and drop the STL, 3MF or OBJ on the page. Nothing is uploaded.
- The split runs by itself to 305 × 305 × 280 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 QIDI Plus 4?
305 × 305 × 280 mm (width × depth × height), which is 26.1 litres. That is the manufacturer's stated printable volume as used by splicestl's QIDI Plus 4 preset; the physical bed may be a few millimetres larger.
What is the largest object you can print on the QIDI Plus 4?
A 280 mm cube fits outright. A flat part can be longer by lying on the bed diagonal: up to about 421 mm long if it is narrow and under 280 mm tall. A tall part can stand 280 mm high if its footprint is within 305 × 305 mm. Anything that exceeds these in any orientation has to be split.
How do I print something bigger than the QIDI Plus 4'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 QIDI Plus 4 preset: load the STL, 3MF or OBJ, choose the preset, and the model is cut on all three axes to fit 305 × 305 × 280 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.