First check whether the STL contains several disconnected shells or one continuous solid. Split to objects separates shells that already exist. Cut makes a new division through a continuous model. A one-piece panel that is too large for the bed needs the second operation. Prusa’s split commands · Prusa’s Cut tool
Choose the cut before adding a pin
Suppose a decorative panel is 310 mm long and the usable bed width is 220 mm. A central cut gives two nominal lengths of 155 mm. That arithmetic answers only the length question. Rotate each piece into its intended printing position, include any projecting connector, then check the other bed dimension and brim clearance. A cut through a thin lettering stroke may fit beautifully and still be a poor place to hide a joint. Move the seam to a panel line or the back of a raised border if that keeps sufficient material around the joint.
| Connector choice | What the Cut tool produces | When it helps |
|---|---|---|
| No connector | Two mating cut faces | The seam is accessible and you have another way to align it. |
| Plug | A projection on one piece and a matching recess on the other | There is enough material on both sides and the projecting half prints cleanly. |
| Dowel | Two recesses and a separate printable pin | Both main pieces need flat, unobstructed cut faces for printing. Remember to include the pin on a plate. |
Select the model, open Cut, position the plane and keep both results as separate objects if they need separate plates. Add the connectors on the cut face and confirm them before performing the cut. Check each side in section view. A pin centered on a thin shell can create a recess that opens through the finished exterior. Prusa documents the plug and dowel behavior and the option to keep the cut regions as parts of one object. Cut results and connector types
Verify the joint at full scale
Use Place on Face to set each half on its intended printing face. Slice both and inspect the socket, the first layer around the opening and the remaining wall behind it. For a long job, print a short full-scale slice of the joint first. Scaling the whole model down also scales the designed clearance and tells you less about the actual fit. Place on Face
Save the editable slicer project before exporting the cut pieces. That preserves a place to revisit the layout if a connector binds. If you are handing the pieces to another operator, include their intended units and dimensions. What STL and 3MF files preserve