Unveiling the Truth: Are 3D Printed Dice Truly Balanced?

Crafting a balanced die can challenge even the best manufacturers. So, diving into the exciting realm of 3D printing, one might wonder, Is it feasible to 3D print a genuinely unbiased die? In our everyday world, it’s quite improbable to achieve a wholly balanced die due to microscopic flaws. Thus, the real debate boils down to how close to perfection can we reach?


3D printed dice can achieve remarkable fairness, largely influenced by the 3D printing method you employ. Nonetheless, certain tiny defects and the internal structure’s symmetry can influence the die’s impartiality.

In this friendly guide, we’ll delve deeper into the nuances of balanced 3D printed dice and provide insights on creating the fairest dice you can with your 3D printer.

Is a 3D Printed Die Truly Impartial?

No die in existence boasts absolute fairness. Yet, through meticulous testing and precision-driven manufacturing techniques, they come impressively close. When we turn our attention to 3D printed dice, it’s essential to note that they don’t undergo such rigorous examinations or refined crafting processes. Hence, stacking them against a professionally crafted set might not be a great idea.

What’s fair is subjective. If a 3D printed die achieves 90% accuracy over 1,000 rolls, would you tag it as fair? Once you define your fairness criteria, it’s easier to ascertain if 3D printed dice match up to your standards. While they might have minuscule imperfections, when rolled multiple times, the disparities tend to even out, making them suitable for most applications.

3D Printing Details to Contemplate

Wall Thickness: This refers to your print’s external layer dimensions. Ensuring uniform wall thickness prevents uneven weight distribution. Although the material’s lightness can be forgiving, strive for consistency, preferably using PLA or ABS.

Infill Settings: While it’s tempting to go for a solid 100% infill, many slicing tools use patterned infills for stability and efficiency. Aim for randomized patterns for better balance.

Printing Technology:

FDM (Fused Deposition Modeling): A cost-effective method with simpler prototyping abilities.
SLS (Solid Laser Sintering): Fuses polymer powders with lasers. Ideal for functional prototypes.
SLA (Stereo Lithography): Uses lasers on photopolymer resin. High precision with color variety.

Considering fairness, SLA or SLS might be your best bet, thanks to advancements making them as affordable as FDM printers.

Printing Accuracy & Flaws: Achieving flat surfaces with FDM might be challenging. Tweaking settings and post-print processing can improve results.

Dice Varieties: Simpler dice like D6 & D4 are relatively straightforward. But more intricate designs require extra care and iterations.

Post-processing, like sanding or using an acetone vapor bath for ABS prints, can enhance the die’s appearance and fairness.

Testing Your Dice’s Equilibrium

A straightforward method? Roll it 100 times and analyze the distribution. Additionally, the saltwater trick can help:

1. Mix hot water and salt.
2. Microwave to dissolve salt.
3. After cooling, immerse your dice to observe its movements.

Top 3D Printed Dice Designs to Explore

– The Balanced Dice model by RarelyEvil on Thingiverse.
– Facets Dice – a Full Set by sablebadger on Thingiverse.
– Cracked RPG Dice Set on Thingiverse.

Seek more on platforms like Shapeways or MyMiniFactory for a plethora of artistic designs.