PLA Is Easy — Until It Isn't
PLA is the filament everyone starts with, and for good reason: it prints at low temperatures, sticks to almost anything, and rarely warps. But "easy" is not the same as "no settings matter." The same qualities that make PLA forgiving also make it brittle, heat-sensitive and prone to a handful of specific failures that confuse people who expect PLA to just work.
This guide covers PLA settings, the real causes behind the common problems, and how to choose between standard PLA, PLA+, matte, silk and specialty blends.
What PLA Is (and What It Is Not)
| Property | PLA | Practical meaning |
|---|---|---|
| Print temperature | 190–220 °C | Low, safe, no enclosure needed |
| Heat resistance | ~60 °C glass transition | Softens in a hot car, in direct summer sun, or near a heater |
| Strength | Stiff but brittle | Handles compression well, shatters under impact |
| Warping | Very low | Prints on almost any surface |
| Moisture sensitivity | Low–moderate | Forgiving, but wet PLA still prints badly |
| UV / outdoor | Poor | Degrades and fades outdoors |
Use PLA for models, prototypes, display pieces, jigs, organizers, toys and anything decorative. Avoid it for parts that get hot, sit in a car, live outdoors, or take repeated impact.
PLA Print Settings (Starting Points)
| Setting | Value | Notes |
|---|---|---|
| Nozzle temperature | 200–215 °C | 205 °C is a solid default. Higher for speed, lower for fine detail |
| Bed temperature | 50–60 °C | 60 °C for the first layer; some use 0 °C on textured PEI |
| Print speed | 50–100 mm/s | Standard PLA 60 mm/s; high-speed blends reach 150–300 mm/s |
| Fan | 100 % | PLA loves cooling — more than any other common filament |
| Layer height | 0.12–0.24 mm | 0.2 mm for general use; 0.12 mm for miniatures |
| Retraction | 0.8–2 mm | Direct drive lower, Bowden higher |
| Infill | 15–25 % | Grid is fine for PLA |
Why cooling matters more with PLA
PLA prints best when each layer is fully solid before the next one lands. Running the part-cooling fan at 100 % — even on a first layer at 0 % and stepping up over the next few layers — produces sharper corners, cleaner bridges and less drooping. If you came from PETG or ABS and habitually keep the fan off, that habit is the cause of most "PLA looks sloppy" complaints.
The Six PLA Problems and Their Real Causes
1. Layer lines look rough or inconsistent
Usually either wet filament (steam expands in the nozzle and creates uneven extrusion) or a loose belt/eccentric nut. Dry the spool, then check mechanical play. Slight over-extrusion is also common — try 97 % flow.
2. Corners bulge and details round off
Classic insufficient cooling plus too much speed. Fan to 100 %, drop speed for outer walls to 30–40 mm/s, and enable "slow down for overhangs."
3. The part shatters or snaps
PLA is brittle by nature; the fix is often geometry rather than settings. Increase wall count, round sharp internal corners, avoid loading the part across layer lines, and consider PLA+ (tougher) if the part takes impact.
4. Stringing between parts
Lower nozzle temperature by 5–10 °C, increase retraction slightly (0.2–0.5 mm steps), enable wipe-on-retract, and increase travel speed to 150 mm/s+.
5. Warping (yes, PLA can warp)
Large flat prints with sharp corners still lift sometimes. Use a brim, raise bed temperature to 60 °C, add a 2 mm rounded fillet in CAD, and avoid cooling the first layer.
6. Clogged or partially clogged nozzle
Usually heat creep: the filament softens too high up in the hotend and jams. Check that the hotend fan spins freely, lower retraction, and reduce printing temperature if the extruder sits in a warm enclosure.
Drying PLA: Less Critical, Still Worth Doing
PLA absorbs less moisture than PETG, TPU or nylon, but a spool left open in a humid room will still print with pops, rough surfaces and weak layers. Store sealed with desiccant; dry at 45–50 °C for 4–6 hours if it has been exposed for weeks.
A dryer that lets you print directly from the unit — like the FilaBox or FDC12 Cabinet — is the simplest way to keep it consistent. Full temperature tables are in our filament drying guide.
Choosing Your PLA: Standard, PLA+, Matte, Silk, Luminous
The word after "PLA" changes how it prints and what it is good for.
| Type | Character | Best for | Notes |
|---|---|---|---|
| Standard PLA | Stiff, crisp, cheap | Models, prototypes, display | Most brittle of the family |
| PLA+ | Tougher, slightly more flexible | Functional parts, moving prototypes | Prints with the same settings — drop-in upgrade |
| Matte PLA | Low gloss, hides layer lines | Design objects, enclosures, decor | Almost invisible layer lines; the cleanest-looking finish |
| Silk PLA | Glossy metallic sheen | Vases, figurines, gifts, cosplay | Reduce speed 20–30 %; silk shows layer irregularities |
| Luminous / glow | Phosphorescent pigment | Novelty, signage, night-use objects | Use a hardened nozzle if pigment is abrasive |
| High-speed PLA | High flow formulation | Fast production on modern printers | Designed for 150–300 mm/s |
Our line-up maps directly onto these: PLA+ 1KG in 26 colors, PLA Matte in 17 colors, PLA SILK in 17 colors, plus dual and tri-color silk blends such as PLA SILK Dual, PLA SILK Tri-Color, PLA Luminous and PLA UV Color Change. There is a dedicated PLA+ High Speed for fast printing, and PLA Rock for a stone-like finish.
Two practical notes on silk and matte
- Silk prints slower and hotter. Higher temperature (215–225 °C) plus lower speed produces the gloss; fast printing makes it look dull and cloudy.
- Matte hides errors, silk reveals them. If a model has surface defects, matte conceals them and silk amplifies them. Choose accordingly.
Frequently Asked Questions
What is the best nozzle temperature for PLA?
200–215 °C for most spools. Use 205 °C as a baseline, then go up for speed or down for detail. Silk wants 215–225 °C.
Should I use a glue stick for PLA?
Usually not needed on PEI or textured plates. Use glue as a release agent on smooth glass, not as an adhesive.
Can I print PLA in an enclosure?
Yes, but leave the door open. Trapping heat softens the filament too high in the hotend and causes clogs.
Is PLA strong enough for functional parts?
For compression and stiffness, yes. For impact or heat, use PLA+ or move to PETG, ABS or PA.
Do I need a hardened nozzle for PLA?
For plain and silk PLA, no. For glow-in-the-dark, rock or any heavily pigmented PLA, yes — the pigment is abrasive.
The Short Version
Print PLA at 200–215 °C with the bed at 60 °C and the fan at 100 %. Keep the enclosure open. Dry the spool if it has been sitting out. Pick the blend by purpose: PLA+ for toughness, matte for clean surfaces, silk for shine, luminous for glow. Do that and PLA delivers exactly what it promises: reliable parts with almost no setup.
Start with PLA+ 1KG · PLA Matte · PLA SILK · PLA+ High Speed