Master your Prints
So, you've decided to print tiny plastic people with your complex piece of manufacturing equipment — excellent choice.
This is the go-to page for every beginner and mid-level printer who wants to level up their FDM miniatures. Everything you need, in one place.
Before You Print
These are the steps you should follow every time you sit down to print a miniature. They might seem simple, but skipping any of them is the difference between a clean print and a failed one. Build the habit, and your results will speak for themselves.
Use a cool plate instead of standard PEI
Cool plates (also called textured PEI or satin plates) provide significantly better adhesion out of the box compared to smooth PEI sheets. The textured surface creates more contact points with the first layer, which is critical for miniatures — their small footprint and thin features make them prone to popping off mid-print. If your printer came with a smooth plate, upgrading to a cool plate is one of the easiest wins you can get.
Clean your bed with soap and water
Even if your plate looks clean, fingerprints, dust, and residual oils from previous prints create invisible barriers to adhesion. Before every print session, wash your build plate with regular dish soap and a sponge under warm water, then let it air dry or pat it with a clean cloth. Avoid using alcohol alone — it doesn't dissolve grease as effectively as soap. A clean plate is a reliable plate.
Pre-heat your bed for 15 minutes
Set your bed temperature to 50–60°C and let it soak for about 15 minutes before starting. This allows the heat to distribute evenly across the entire surface, eliminating cold spots that can cause corners to lift. This thermal equilibrium is especially important for plates that have been sitting cold overnight — metal expands slightly when heated, and you want that expansion to stabilize before your first layer goes down.
Run a test extrusion
If it's the first print of the day, extrude a small amount of filament manually (or use a purge line) to make sure the nozzle isn't clogged and filament is flowing smoothly. Overnight, filament can degrade inside the heatbreak or accumulate moisture, causing inconsistent extrusion on the first few layers — exactly the layers that matter most for miniature bases and feet.
Slice with minimal supports
Orient your model in the slicer to minimize the amount of support material needed. Every support that touches your miniature is a potential scar — a mark left behind when you remove it. Use tree supports (which are easier to remove) and place them only where absolutely necessary, ideally in areas that won't be visible after painting. Less support also means faster print times and less post-processing work.
Print at least 2 copies at once
This is one of the most underrated tricks for miniature quality. When you print a single small model, the nozzle stays on the same spot, layer after layer, with no time for the plastic to cool. This causes heat buildup that softens the previous layer, leading to blobbing and drooping details. By printing two copies side-by-side (not using per-object mode), the nozzle travels between them, giving each model time to cool before the next layer. The result: significantly better layer stability and sharper details.
Use a quality filament
Your filament choice has a massive impact on print quality. SUNLU PLA 2.0+ Grey is one of the most recommended filaments in the FDM miniatures community — it has excellent dimensional consistency, prints at lower temperatures for better precision, and produces a surface that primes and paints beautifully. Avoid novelty filaments (silk, matte, marble) for miniatures — their additives change flow behavior and reduce fine detail.
Consider glue for extra adhesion
A cool plate with clean PLA should handle most adhesion challenges, but if your plate is worn, scratched, or you're printing something with a very small base, apply a thin layer of spray glue or glue stick to the build surface. This creates a bonding layer that holds the print firmly during printing but releases cleanly when the plate cools. It's cheap insurance against a 12-hour print detaching at hour 8.
Follow these steps, and you will become a master of 3D printing.
Consistency is the secret. The best printers aren't the ones with the fanciest machines — they're the ones who prepare the same way every single time.
When gluing broken details with superglue (CA glue), sprinkle a tiny amount of cinnamon powder on the joint. It acts as an accelerator that makes the glue cure almost instantly and adds structural rigidity. Surprisingly effective for tiny repairs.
A light coat of spray adhesive on your build plate works wonders for stubborn adhesion problems. It holds prints firmly during printing and washes off easily with warm water and soap, even after hours of use. A can lasts months.
Sprue goo (dissolved plastic sprue in solvent) doesn't chemically bond with PLA, but many users have had success brushing it over printed miniatures to fill in layer lines before priming. It's not a perfect solution, but worth experimenting with.
If your miniature has a tiny base or thin contact points with the bed, enable brim in your slicer. It adds a thin ring of material around the base that dramatically improves adhesion, preventing the model from tipping or warping. Easy to peel off after printing.