How do you get high quality prints on Ender 3?

Breaking it down, magic numbers in 3D printing signify the optimal layer heights that perfectly synchronize with the Z-axis motor and leadscrew characteristics. This leads to a more seamless printing experience. Instead of allowing your layer heights to mismatch with the markers on your motor, harnessing these magic numbers can drastically improve your printing results.


To achieve the finest 3D printing outcomes through magic numbers, it’s pivotal to discern the critical operational values.

Unveiling the Secret: What are 3D Printer Magic Numbers?
In the world of 3D printing, the term ‘magic numbers’ might ring a bell. They play a crucial role in elevating your 3D printing expedition.

The magic numbers in 3D printing hint at a set of layer heights devised to enhance the quality of your prints. This mechanism considers the intricate mechanics of your printer’s stepper motor.

Stepper Motors Explained
Unlike some motors, steppers operate without a feedback mechanism. This means the printer solely relies on instructing the stepper motor to reach a designated spot, trusting it accomplishes the task. These motors progress in specific increments: primarily a full-step and its counterpart, the half-step.

Imagine the full-step as a magnet aligning with its corresponding electromagnet. On the other hand, the half-step portrays two electromagnets luring the magnet to set halfway through the motor’s spin.

In its essence, your stepper motor transitions through a sequence of movements and revolutions. Ideally, you’d want it to execute complete steps rather than incomplete ones.

If the motor doesn’t achieve a full or half-step, it compensates by shifting between steps, termed as a micro-step. These micro-steps, being mere approximations of the motor shaft’s alignment to a step, don’t quite hit the mark for 3D printing precision. Due to their inconsistent nature, it’s crucial to determine layer heights that can sidestep these micro-movements.

By adeptly applying these magic numbers, you can sidestep micro-steps altogether. The result? Flawless, high-caliber 3D prints. Numerous enthusiasts have noted a stark improvement in their print quality upon leveraging these magic number layer heights.

Decoding the Magic: How to Pinpoint Magic Numbers for Your 3D Printer
Your options are twofold: either delve into existing research related to your printer’s magic numbers (many enthusiasts have generously shared their findings), or opt for tools like the Prusa Magic Number Calculator.

Essential parameters to be acquainted with include:
– Motor step angle
– Leadscrew pitch
– Gear ratio
– Pitch presets
– Your preferred layer height

Despite its inclination towards 3D printers using imperial leadscrews, this calculator still proves beneficial for metric leadscrews with atypical layer heights. Feed in these specifications, and the calculator promptly indicates if your chosen layer height is on point or if adjustments are warranted.

Unearthing the Figures: Ender 3 & Creality Machine Magic Numbers
For fans of Creality machines, the magic number stands at 0.04. Consequently, layer heights like:
– 0.04
– 0.08
– 0.12
and the list continues, pave the way for superior printing results. It’s heartening to note that software like Cura now defaults to these magic numbers. Notably, the Ultimaker series also advocates the 0.04mm magic number.

Spotlight on Monoprice Select Mini Magic Numbers
For those wielding a Monoprice Select Mini, the number to remember is 0.04375, a discovery credited to Michael O’Brien. Therefore, the following heights are recommended:
– 0.04375
– 0.0875
– 0.13125
and so on to ensure pristine prints.