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Your First Print

Go from a boxed printer to a finished object. Use PLA — it's the most forgiving plastic. Budget an unhurried hour or two; rushing the setup is how first prints fail.

1. Assemble and check

Follow the manufacturer's assembly steps. Then check the physical basics before powering on:

  • Frame screws are snug, nothing wobbles.
  • Belts are taut — they should twang faintly when plucked, not sag.
  • The print head moves smoothly by hand along all axes (power off).

Check: nothing loose, nothing grinding. Most "mystery" print defects trace back to a wobbly frame or a slack belt.

2. Load filament

Heat the nozzle to the filament's temperature (about 200°C for PLA — your printer's menu has a preheat option). Feed the filament in until melted plastic flows from the nozzle, then stop. A little ooze is normal; wipe it off.

Check: a steady thin strand comes out, not curls or nothing. If nothing flows, the nozzle may be too cold or the filament isn't seated in the extruder gears.

3. Level the bed and set the gap

On a modern printer (automatic bed leveling — Bambu, Prusa MK4, Creality K2, and similar): run the automatic calibration from the printer's menu and skip the rest of this step. The printer probes the bed and sets the nozzle gap itself.

On an older printer (manual leveling knobs): this step is essential. Turn the knobs to level the bed, then set the nozzle gap (z-offset): the nozzle should just barely grip a sheet of paper slid underneath — you feel slight drag. Too high and the first layer won't stick; too low and the nozzle drags through the plastic.

Check: on older printers, the paper-drag test at several points on the bed. This one adjustment decides more first prints than anything else on machines without auto leveling.

4. Slice a starter model

Open your slicer, load a simple calibration model (a calibration cube or the classic benchy boat — both free on Printables and Thingiverse), keep every setting at the defaults for PLA, and export the G-code to the printer (SD card, USB, or Wi-Fi depending on your machine).

Check: the slicer's preview shows the model sitting flat on the build plate, not floating or sunk into it.

5. Print and watch the first layer

Start the print and watch the first layer go down. It should lay flat, even lines that merge into a solid sheet. If it's not sticking, stop the print now — a bad first layer never recovers.

Check: the first layer is smooth and stuck. If it peels up, clean the bed (soap and water, then isopropyl alcohol), re-check the gap, and try again. See Troubleshooting if it keeps failing.

6. Let it finish, then remove

Don't touch the printer mid-print — vibrations show up as layer lines. When it finishes and the bed cools, the part usually pops off with a gentle flex or a scraper. If it won't budge, wait for full cooldown; forcing it can damage the build surface.

Check: your finished object. Compare it to the model — clean layers, no spaghetti, no warping off the bed. Small imperfections on a first print are normal and fixable.

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