3D Printing Filament Guide
The wrong material choice wastes a spool and fails the part. The right one prints first try and holds up for years. Seven filament types cover every FDM use case. This page tells you which one to reach for and what settings to start with.
Every Material at a Glance — Find Yours in Seconds
| Material | Print Temp | Bed Temp | Enclosure | Difficulty | Best For |
|---|---|---|---|---|---|
| PLA | 190-220°C | 45-60°C (optional) | No | Beginner | General printing, models, prototypes |
| PETG | 230-250°C | 70-85°C | No | Intermediate | Functional parts, mild heat, food-safe |
| ABS | 230-250°C | 100-110°C | Yes (required) | Advanced | High-heat parts, chemical resistance |
| ASA | 240-260°C | 90-100°C | Yes (recommended) | Advanced | Outdoor, UV-resistant |
| Nylon | 240-280°C | 70-90°C | Yes | Advanced | High strength, self-lubricating |
| TPU | 220-240°C | 30-60°C | No | Intermediate | Flexible parts, gaskets, grips |
| Resin (SLA/DLP) | N/A (UV cure) | N/A | No | Intermediate | Ultra-fine detail, jewelry, miniatures |
Start Here: PLA for Learning, PETG for Real Parts
PLA is the most beginner-friendly filament. It prints at low temps, produces no harsh fumes, and warps very little. It's made from corn starch, so it's biodegradable. The weak point: PLA deforms around 60°C. Leave a PLA print in a hot car and it warps. PLA+ versions add impact resistance and some flexibility. For most indoor uses, PLA is still the right answer even for experienced printers.
Compare options: PLA vs PETG or PLA vs ABS
Move to PETG When the Part Needs to Hold Up
PETG is the natural step up from PLA. It's stronger, handles more heat (up to ~80°C), and some brands are food-safe certified. The trade-off: it strings more than PLA, and it bonds aggressively to bare glass beds — use a PEI sheet or glue stick. No enclosure needed.
Read the full breakdown: PLA vs PETG or ABS vs PETG
ABS: High Heat and Acetone Finishing — With Real Trade-Offs
ABS is the classic workhorse — the same plastic used in LEGO bricks. It holds up to ~100°C and can be smoothed with acetone vapor for a near-injection-mold finish. The downside: it emits styrene fumes during printing (ventilate) and warps badly without an enclosed build volume. Most people don't actually need ABS anymore. PETG covers 90% of functional part needs, and ASA is a better outdoor choice than ABS.
See: ABS vs PETG and PLA vs ABS
Use ASA for Anything That Lives Outdoors
ASA is ABS modified for UV resistance. It doesn't yellow in sunlight and handles the same temperature range as ABS (~100°C). For almost every outdoor application, ASA is the better call over ABS. It needs slightly higher temps than ABS but prints similarly. An enclosure is recommended to prevent warping, though it tolerates slightly more draft than ABS.
When You Need More Than Hobby Filaments: Nylon
Nylon has the highest strength of any common FDM filament. It's also self-lubricating, which makes it ideal for gears, bearings, and moving parts. The major catch: Nylon is hygroscopic. It absorbs moisture from open air in as little as 1-2 hours and prints terribly when wet. You must store Nylon in an airtight container and dry it before every print run.
Read: How to dry filament
TPU: The Only Filament That Bends Without Breaking
TPU is flexible and rubber-like. Shore hardness varies by brand — 95A is common and feels similar to a shoe sole. Print slow (30-40 mm/s) and use a direct drive extruder if possible. Bowden setups can print TPU but require very low retraction and slower speeds to avoid jamming. Good for phone cases, grips, gaskets, and any part that needs to flex and return.
Resin: When Detail Matters More Than Anything Else
Resin printing is a completely different process from FDM. SLA and DLP printers use UV light to cure liquid photopolymer resin layer by layer. The result: far more detailed prints than FDM can produce. The trade-off: liquid resin is toxic and requires careful handling, an IPA wash station, and a UV post-cure lamp. Resin is not interchangeable with FDM filament — you need a different printer type entirely.
Which Filament Should You Use? Answer in 30 Seconds
Need side-by-side detail? See PLA vs PETG, ABS vs PETG, or PLA vs ABS. If your prints have problems, start with our guides on stringing and drying filament.
Log Every Material You Try. Never Start From Zero Again.
Every material you try has its own quirks — and so does every brand within that material. Log your print temp, bed temp, retraction, and notes per spool in PrintLog3D. When you revisit that material six months later, you have a starting point that actually worked. No guessing. No wasted first prints.
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