Calibration Test | Japan Mapper

The calibration guide below is mostly software-specific. It does not cover hardware calibration—like tightening your screws, checking belt tension, or greasing your gears. That is an entirely separate beast. Hardware issues are much harder to diagnose until your machine completely falls apart or it's already too late, so make sure you do that maintenance stuff regularly.

Another crucial note: before you start blaming calibration for a bad print, the absolute first step in troubleshooting is drying your filament. Wet filament will ruin everything else on this list.

The Absolute Minimum

With modern equipment, you usually just need to perform the absolute minimum to get a passable print. If you just want the TL;DR for a successful print, focus on these three. Nailing these solves 90% of your printing problems:

Bed Leveling (First Layer): If it doesn't stick to the bed, the print fails. Honestly, on a modern printer, just check the "Bed Leveling" box before you hit print. The machine taps the bed and figures it out for you. No paper tests, no spinning knobs.
Temperature: The plastic needs to melt right. This is basically trial and error. Check the manufacturer's suggested range on the box. You can either print a quick "Temperature Tower" from the slicer to see which temp looks best, or just dial it up or down by 5-10 degrees manually if your prints are looking stringy or weak.
Flow Rate: Pushing the exact right amount of plastic so parts fit together. You do not do this every print. When you buy a new brand or type of filament, run the Flow Rate calibration from the slicer menu once. Pick the smoothest test chip, save that number into a new filament profile, and you are done.

Tip for Bambu Studio / OrcaSlicer users: You don't need to hunt down STLs for most of these! Just use the "Calibration" menu at the top of the slicer.

The Full Calibration Checklist

For advanced users—especially when you move beyond little trinkets and start printing functional parts that need absolute accuracy (like tight screw threads)—you might need to perform the full calibration checklist below.

These tests are somewhat straightforward. The only "gotcha" is that you'll most likely need to do them for every different filament if you really want it to be as accurate as possible. Sucks! But it is what it is.

Personally: I just settle on the three above until I encounter a specific problem on a model, like droopy overhangs or severe stringing.

Machine & Dynamics

Input Shaping: This stops "ghosting" (those weird echo lines on flat walls). Just run the machine's automated self-test and let it vibrate itself into calibration.
Pressure Advance (K-Factor): Makes sure your corners are sharp 90-degree angles instead of bulging out. Like Flow Rate, run the slicer test once for a new filament, save the profile, and forget it. (Note: This is what modern printers use instead of old-school E-steps).
Retraction Test: Run this if your PETG or TPU prints look like a spiderweb. It figures out exactly how far to pull the filament back when moving between parts.

Geometry & Supports

Dimensional Accuracy (Shrinkage): Plastic shrinks when it cools. Print a basic cube, measure it with digital calipers, and type the shrinkage percentage into your slicer's material settings. It permanently fixes the sizing for that specific spool.
Tolerance Test: A block with little spinning pegs. It tells you exactly how much of a gap you need to leave in your 3D models so moving parts don't fuse together.
Overhang Test: Prints increasingly steep angles so you know exactly when you need to turn on supports in the slicer.
Support Z-Distance: The gap between your support material and the model. Too tight, and they fuse together. Too loose, and the underside of your print looks like spaghetti. Test this using the Support Z Distance Test (MakerWorld).

Troubleshooting

The Cold Pull: If you have done your Flow Rate calibration but the printer is still under-extruding or skipping, you probably have a partial clog. Heat the nozzle, let it cool halfway, and aggressively yank the filament out to pull the garbage out with it.