> For the complete documentation index, see [llms.txt](https://rda-workshop.gitbook.io/1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rda-workshop.gitbook.io/1/3d-printing/setting-up-a-3d-print-software.md).
# Setting up a 3D print (Software)
**Quick setting setup**
Below is a quick reference setting, if you do not have time to go through the 9 steps below. It works for most prints. Check which printer type is available and choose it in the printer setting either MK4S or MK4:
**Step 1: 3D File import – .STL**\
To 3D print, you need a 3D model exported as an .stl file from CAD software. Export each part as a separate .stl file; multiple files can be printed together in one job. Open the .stl file(s) in PrusaSlicer to prepare them for printing.\
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In PrusaSlicer, click **“Import” → “Import STL/3MF/STEP…”** in the top-left corner. Repeat this for each part if you have multiple files.
**Step 2: Choose your file (USB)**\
Choose your .stl file. If it is on a USB drive, you must choose the usb drive in the left menu. Click open.
**Step 3: Fix errors if needed**\
Your 3D model should now be loaded and appear in PrusaSlicer. If a warning appears on the right, hover over the warning icon and right-click to fix the errors.
**Step 4: Printer setting**\
The right side of the program is for choosing the printer type and and print setting. Start with choosing the printer version.
Choose the printer version based on what is available. We have **MK4**, **MK4S**, and **MK3** printers.
* **MK4** printers are numbered 1–10
* **MK4S** printers are numbered 11–17
* **MK3** printers are unnumbered (older models)
Check which printers are available in the printer room and select the corresponding version. The printer number is written on a yellow label. **MK4S** or **MK4** are preferred, as they are faster and provide better print quality.
**Step 5: Print setting - (Layer height)**\
The layer height determines the print quality and speed. Thicker layers print faster but produce less detail, while thinner layers take longer but give finer detail.
* **0.1 mm – Detail:** High-quality, detailed prints
* **0.2 mm – Speed:** Faster prints, suitable for simpler shapes
**Step 6: Filament**\
We always print using white, black, or grey PLA. The filament spools are changed by the staff.\
If a printer runs out of material, please contact an instructor in the workshop.
**Step 7: Supports**\
Make sure **supports are enabled** to ensure your model prints successfully.
Supports are temporary structures that hold up overhanging parts of your model during printing. Without them, the printer may attempt to print in mid-air, leading to deformation or failed prints.
Supports are designed to be easily removed after printing and usually leave little or no visible marks on the model.
The green color indicates support material
**Step 8: Infill (5-20%)**\
Infill is the internal structure that supports your 3D print.
* **5%** – Minimum for a stable print, enough to support surfaces
* **20%** – Typical for functional or structural parts
* **50%** – Useful for projects like vacuum forming
* **100%** – Use if you plan to drill, modify, or heavily load the part
Adjust the infill percentage based on the strength and purpose of your print.
**Step 9: Brim**
A brim adds a thin, removable ring of extra material around the base of a print to improve bed adhesion and reduce the risk of warping or the model coming loose during printing. We strongly advise to enable a brim.