3D Printer FYIThe first print has one job: demonstrate that this machine, material and profile work together. It does not need articulated tentacles. Those can arrive after the printer has established a working relationship with gravity.
Your finished result should include a small successful part, the project that produced it and enough setup information to repeat it. A mystery success is less useful than a documented failure.
Before power: identify what you actually bought
Match the model, hardware revision and assembly state to the manufacturer’s manual. A kit, a partially assembled machine and a factory-assembled printer have different inspection steps. Remove the documented shipping restraints, install the supplied parts in order and check the required clearance around moving beds, toolheads and spool paths. Do not use an unboxing video for another revision as the assembly authority.
Use the manufacturer’s specified electrical supply and location. Plan access for stopping the machine and removing a print. Consider emissions, hot surfaces and moving parts before choosing its permanent home: NIOSH’s makerspace guidance treats these as real exposure and operational questions, including in schools and small workshops. Approaches to Safe 3D Printing: A Guide for Users
Photograph the completed assembly. Record any damage before attempting a compensating adjustment. A bent bracket is not a slicer setting.
Make a first-run record
| Record | What to write |
|---|---|
| Machine | Model, revision and installed nozzle |
| Software | Firmware and slicer versions |
| Material | Manufacturer, formulation and diameter |
| Surface | Exact sheet/coating and preparation method |
| Job | Model revision, orientation and profile name |
| Result | Photo, observed defect or accepted outcome |
Use the first-print checklist as a printable record. Its empty result cells are intentional. Checkmarks earned before the printer exists are not especially informative.
Run the machine’s own setup procedure
Complete the specified self-tests, homing and bed procedures. Mesh measurement, physical bed alignment and nozzle-to-surface calibration are related but different operations; follow the procedure provided for your machine rather than searching for a universally correct Z offset. Where a system calibrates contact automatically, do not add a manual compensation merely because an older tutorial has one.
If setup reports a fault, record its exact code and stop that sequence. Resolve it through the matching manual. Do not repeatedly restart until the machine happens to stop objecting.
Load a supported material using the machine’s instructions. Inspect the spool path for a tangle or obstruction. Select the actual printer and nozzle in the slicer, then a matching manufacturer material preset. For a first PLA print, the attraction is modest printing difficulty and low warping, not a promise that every PLA formulation or finished part behaves identically. PLA
Choose a test that answers a question
Use a manufacturer test file explicitly intended for your machine, or slice a simple model with the matching profile. Do not run arbitrary downloaded G-code: a model file and a machine-specific instruction file are different artifacts.
Preview the slice. Check orientation, occupied dimensions, material assignment, supports and the beginning of the job. Keep the slicer project as well as the generated file. The G-code Microscope can help inspect its supported commands, but its partial dialect support does not certify a file as safe for your printer.
Watch the first layer. Stop if the nozzle scrapes the surface, deposited lines fail to join, material accumulates on the nozzle or the print detaches. Prusa’s first-layer guide separates surface preparation and first-layer setup; use its advice only for the surfaces and machines it identifies. First layer issues
Worked first-day sequence
For an illustrative small desk spacer, define success before printing: the part finishes attached, its layers remain intact, and the intended mating part fits without forcing. No measurements are claimed here.
- Print with the matching supplied profile and record the result.
- If adhesion fails, inspect the exact surface-care instructions before changing temperature or flow.
- If the print completes but the fit is wrong, measure the feature and record the orientation. Move to a small coupon rather than repeatedly printing the entire assembly.
- If it succeeds, repeat once with the same saved project. Label the files so tomorrow’s comparison has a baseline.
Avoid changing material, nozzle, firmware, temperature and speed between attempts. You may improve the print, but you will have made discovering why unnecessarily difficult.
Where this procedure stops
This is a first-run workflow, not a replacement for assembly, electrical repair or model-specific calibration instructions. Do not continue past a heater, sensor or mechanical fault. Once the baseline works, use calibration and slicer tuning, maintenance and the troubleshooter for the next specific question.
Sources
- Approaches to Safe 3D Printing: A Guide for Users — NIOSH. Reviewed 15 September 2026.
- PLA — Prusa Research. Reviewed 15 September 2026.
- First layer issues — Prusa Research. Reviewed 15 September 2026.