Guide
3D Printer Filament Types and What They Are For
There are a dozen filament types on any retailer's shelf and a beginner needs two of them. Here is what each one is genuinely for, and what it demands from the machine.
By Scooter M. · Published · Last reviewed
How this page is funded: the buy links below are affiliate links. If you buy through one we earn a commission, at no extra cost to you. It does not change the order of the picks or a word of what we say about them. Full disclosure.
Printers we claim to have tested: 0. Everyone in this category says they tested twenty machines. We have not tested any, and we would rather say so. What we did instead is on this page: the manufacturer’s own published specification for every pick, cited and dated; the arithmetic on what it costs to run, with the inputs shown; a live price rather than a remembered one; and a plain answer on who should skip each machine.
The short answer
You need two: PLA and, later, PETG. PLA for almost everything; PETG for parts that get hot or need to flex. Everything else on the shelf solves a problem you do not have yet, and most of it asks for an enclosure or a hardened nozzle you do not own.
The whole shelf, in one table
What each material is actually for. The 'needs an enclosure' column is the practical dividing line for an open-frame beginner machine.
| Filament | What it is for | Needs enclosure? | Beginner? |
|---|---|---|---|
| PLA | Almost everything. Models, toys, organizers, prototypes, decor | No | Yes - start here |
| PETG | Parts that get hot or need to bend: car mounts, outdoor items, clips | No | Second material |
| TPU | Anything rubbery: phone cases, gaskets, grips, tires for models | No | Third, and prints slowly |
| ABS | Real heat resistance and machinability. Enclosure territory | Yes, in practice | No |
| ASA | Like ABS but UV-stable, so it survives outdoors long-term | Yes, in practice | No |
| PVA | Dissolvable support material for complex overhangs | No | Only with a multi-spool setup |
| Nylon (PA) | Tough, wear-resistant functional parts. Very moisture-hungry | Yes | No |
| Carbon-fiber filled | Stiffness for functional parts. Abrades ordinary nozzles | Depends on base | No - needs a hardened nozzle |
What the letters actually mean, briefly
PLA is polylactic acid, made from plant starch. It is the easiest of these to print by a wide margin: low temperatures, barely any warping, no smell worth mentioning. Its weakness is heat — it softens at temperatures a car interior reaches on a warm day.
PETG is the same family as a drinks bottle. Tougher than PLA and far better with heat, at the cost of stringing more and being fussier about moisture.
TPU is a flexible plastic. Genuinely rubbery, and it prints slowly because pushing something soft through a nozzle is harder than pushing something rigid. Direct-drive extruders handle it much better than Bowden ones, which is a specification worth checking if TPU is a goal.
ABS and ASA are the traditional engineering plastics. Both shrink measurably as they cool, which is why an open-frame machine fights them — the bottom of a tall part contracts while the top is still hot, and the corners lift. Every open-frame machine on this site lists them as not recommended for exactly that reason. ASA is the one that survives sunlight without going chalky.
PVA dissolves in water. Its job is to be printed as the support scaffolding under an overhang and then washed away, leaving a clean surface. It needs a printer that can feed two materials, which for most beginner machines means a multi-spool unit.
Nylon and fiber-filled filaments are functional-part materials. Nylon is exceptionally thirsty for moisture and generally wants drying before every print. Carbon-fiber-filled filaments are abrasive enough to wear out a standard brass nozzle, so they need a hardened one. Neither is a first-year material.
The two specifications on your printer that decide this
Maximum hot end temperature. Published by every manufacturer. A 300 °C ceiling — which most current beginner machines publish — covers everything above except the most exotic engineering plastics.
Whether it is enclosed. This is the real dividing line, and it is binary. Open frame means PLA, PETG, TPU and PVA. Enclosed adds ABS, ASA and the nylons. No amount of setting-tuning moves a material across that line reliably.
Every printer manufacturer publishes a materials list, and it is worth reading before you buy a spool rather than after. Bambu Lab, for instance, rates PLA, PETG, TPU and PVA as ideal on the A1 series and explicitly not recommended for ABS, ASA, PC, PA and fiber-reinforced filaments.
What to actually buy
Two spools of PLA to start — our picks are here — and one of PETG when you hit a part that needs it. That is the whole shopping list for a first six months, and the PLA against PETG comparison is the page for deciding when the second one is warranted.
What we would buy for this
Chosen from the same registry as our roundups, on the manufacturer’s own published figures and a live price.
Overture PLA
Overture · Your first spool, and your tenth
The default answer to 'what filament should I buy'. A tight published diameter tolerance, a conventional temperature range every printer profile already expects, and it is sold everywhere. Nothing about it is exciting, which is the point.
#ad We do not hold a current price for this product, so we do not show one. How we make money.
What it actually is
PLA is the plastic beginners should print. It is stiff, it needs no enclosure, it barely smells, and it sticks to a plate at low temperatures. This is a mainstream 1 kg spool of it.
What the manufacturer states
| Figure | Value | Source |
|---|---|---|
| Diameter | 1.75 mm | Overture published product specification |
| Dimensional accuracy | +/- 0.02 mm | Overture published product specification |
| Spool weight | 1 kg (2.2 lb) | Overture published product specification |
| Recommended nozzle temperature | 190 - 220 C | Overture published product specification |
| Recommended bed temperature | 25 - 60 C | Overture published product specification |
| Packaging | Dried before packing and vacuum sealed | Overture published product specification |
Read from Overture, PLA filament product page on 2026-09-01. Where a manufacturer does not publish a figure, there is no row for it here.
What is good about it
- +/- 0.02 mm published tolerance, which is as tight as mainstream PLA is quoted
- 190 - 220 C is squarely inside every stock PLA profile you will meet
- A 25 - 60 C bed range means it will stick even on an unheated or barely warm plate
- Vacuum sealed with desiccant, so a spool bought in advance is still dry when it arrives
What is not
- PLA softens in a hot car or a sunny window — this is a property of the material, not the brand
- Not the cheapest per kilogram once you start printing seriously
- Color consistency between batches of any budget filament is a real thing
- No filament is a fix for a machine that is not leveled
Skip this one if
Skip it if the part you are making will live outdoors or in a car. That is a PETG job, not a PLA one, and no PLA brand changes that.
What we cannot tell you
We have not printed this filament. Batch-to-batch color consistency and how it behaves after a year in a cupboard are things only repeated use reveals.
How it scored for a beginner
- Ease for a beginner9.5
- Published tolerance9.5
- Availability9.5
- Value per kilogram8.0
Beginner fit 9.0 / 10. That is our editorial read of how well this suits someone buying their first printer, taken off the published specifications — not a test result, and not a verdict on absolute quality. It is deliberately not marked up as a rating in this page’s structured data. How we pick.
Overture High Speed PETG
Overture · Parts that have to survive heat or flexing
The second spool, not the first. PETG is what you move to when a part has to survive a hot car, a bit of flex or the outdoors — and it is fussier about stringing and bed adhesion than PLA in exchange.
#ad We do not hold a current price for this product, so we do not show one. How we make money.
What it actually is
PETG is a tougher, slightly flexible plastic that tolerates heat far better than PLA. It prints hotter, sticks harder to the plate, and strings more. The same material family as a drinks bottle.
What the manufacturer states
| Figure | Value | Source |
|---|---|---|
| Diameter | 1.75 mm | Overture published product specification |
| Dimensional accuracy | +/- 0.02 mm | Overture published product specification |
| Recommended nozzle temperature | 230 - 260 C | Overture published product specification |
| Recommended printing speed | 30 - 300 mm/s | Overture published product specification |
Read from Overture, High Speed PETG filament product page on 2026-09-01. Where a manufacturer does not publish a figure, there is no row for it here.
What is good about it
- Handles heat that would soften a PLA part into uselessness
- Tougher and less brittle than PLA, so it survives being dropped
- +/- 0.02 mm published tolerance, the same as Overture's PLA
- A 30 - 300 mm/s published speed range that fits current fast machines
What is not
- Strings between features far more readily than PLA
- 230 - 260 C means your printer's hot end has to be rated for it — the A1 mini's 300 C ceiling is fine, some older machines are not
- It can stick to a smooth PEI plate hard enough to damage the surface
- Absorbs moisture from the air faster than PLA, so an open spool goes off
Skip this one if
Skip it as a first spool. Learn what a good first layer looks like in PLA before you add a material that sticks too well and strings between everything. PETG is a solution to a problem you have not had yet.
What we cannot tell you
We have not printed this filament. How much stringing you get at a given retraction setting, and whether it damages a specific plate, depend on the machine and we have not tested either.
How it scored for a beginner
- Ease for a beginner6.5
- Published tolerance9.5
- Availability9.0
- Value per kilogram8.0
Beginner fit 7.9 / 10. That is our editorial read of how well this suits someone buying their first printer, taken off the published specifications — not a test result, and not a verdict on absolute quality. It is deliberately not marked up as a rating in this page’s structured data. How we pick.
How these were picked
We have not printed on these machines and we do not pretend to have. What we did was read each manufacturer’s own specification page, take their stated build volume, temperatures and speeds, check that every pick genuinely fits the job in this page’s title, confirm it is still being sold, and pull a live price rather than a remembered one. Every figure names the source it came from, so you can check it yourself in about a minute.
How we pick sets out the full method, including what would change a ranking.
Questions people actually ask
+−What are the main types of 3D printer filament?
PLA, PETG, TPU, ABS, ASA, PVA, nylon and fiber-filled composites. For an open-frame beginner machine the practical list is PLA, PETG, TPU and PVA — the rest want an enclosure or a hardened nozzle.
+−Which filament is easiest to print?
PLA, comfortably. Low temperatures, minimal warping, no enclosure needed and it sticks to a barely-warm plate. It is also what every beginner guide recommends starting with.
+−Do I need a special nozzle for some filaments?
For carbon-fiber and glass-fiber filled filaments, yes — they are abrasive and will wear a standard brass nozzle. Glitter and wood-filled PLAs are mildly abrasive too. Plain PLA, PETG and TPU are fine on a stock nozzle.
+−What is PVA filament for?
Support material that dissolves in water. It is printed as the scaffolding under an overhang and then washed away, leaving a clean underside. It needs a printer that can feed two materials.