For all the people who have asked about filaments, here's my list, spread across 8 different posts. This list includes over a hundred filaments, with pictures, measurements, and impressions. All are 1.75mm. Please don't read too much into my opinions, there's a lot of variation in filament and printers, and my opinions apply only to the spools I have on hand. I try to be objective with these opinions, but my preferences and biases affect my opinion, so keep that in mind when browsing this list. Also be aware of the date, some of these filaments may no longer be available, or may be different from what is currently available. I sometimes describe how I use and print some filaments just to provide another data point, it's likely that your optimal setup will be different from mine.
PLA | ABS | PETG | FLEXIBLE | NYLON | METAL | WOOD | OTHER
Diameter - Diameter readings are taken at several angles, across a meter or more of filament, at whatever part of the spool is currently accessible. Sometimes the filament diameter variation is the result of variations in roundness, and may not have a significant impact on printing performance. I've noticed that I've become less tolerant of filament diameter variation as printers get more precise, inconsistent layers or banding tends to overshadow filament diameter fluctuation. One exception is with transparent filaments, where irregular layers aren't very visible.
Color - It's hard to know the exact color, transparency, and texture of the filament when you're buying online. I'm hoping these pictures along with the descriptions will help you know what you're buying. All the pictures were lit with the same basic setup (unless stated otherwise) so the colors should be somewhat consistent across different types and brands. I have my monitors calibrated, and I try to adjust the pictures to match the actual filament as accurately as I can (which is not very accurately). I don't put the same effort into the example photos or photos that contain multiple spools.
Transparency - Transparency makes a big difference in how these filaments print, but it's one aspect that I hard time getting reliable info on. I'll use the following terms when describing the spooled filament. This info is subjective, the surface finish of the filament will affect the perceived transparency, but it should give you a rough idea.
- very high - Perfectly clear as far as I can tell, ignoring any color.
- high - It's translucent, with a significant amount of fogginess or haziness.
- moderate - It's opaque enough that it doesn't appear to be transparent, but light shines through it fairly easily. If you press a bright flashlight against the spool of filament, about half of the spool will light up. Infill is usually visible through one or two shell layers.
- low - It's opaque enough that you probably won't see your infill showing through, but transparent enough to deemphaasize layer lines. If you press a bright flashlight against the spool of filament, you will see a large halo of light around the flashlight from the light filtering through the filament.
- none - Completely opaque. If you press a bright flashlight against the spool of filament, you will see very little if any light bleeding through the filament.
Printers - I use a Eustathios Spyder v2 and a Rigidbot, both running E3D v6 Hotends. The Rigidbot uses Printrbot gear head direct drive, the Eustathios uses a short bowden setup with a Bondtech extruder (160mm from gear to nozzle). Both are fixed gap, symmetric grip, high torque extruders, so for the most part, all the filaments listed feed without jamming or clogging, (there are a few exceptions, like running metal powder filament through a 0.3mm nozzle or trying to print with cleaning filament). I also used to own an Afinia H-Series Printer (US version of the Up! Plus), only a few of these filaments work well with that printer out of the box. All the example prints have been printed on these three printers. Keep in mind that filament isn't the only factors affecting print quality, choice of printer, experience, print settings, choice of slicer, etc. can have a bigger impact than the filament.
Environment - I'm not sure how much the ambient environment affects printing, but I live in San Francisco Bay Area, California, USA. Temperature and humidity is moderate, indoor temperatures range from a low of 45°F / 7°C in the winter to a high of 80°F / 27°C in the summer with normal temperatures around 65°F / 18°C. None of my printers are enclosed.
Links - There are affiliate links in this list, I may receive a small percentage of the total if you place orders soon after using the links (at no cost to you). I've marked all affiliate links with an asterisk (*). Many thanks to all who have been using these links! Normally I only link to products I'd buy again, but for convenience and completeness, I'm linking all the filaments I can find a reputable source for (even the really bad ones, so read the description). I usually link Amazon* when possible, unless I know of better sources for that particular item.
- Very strong, high impact resistance.
- Very strong layer bonding, does not delaminate (as long as the print temperature is high enough).
- Bends instead of breaking.
- Can by dyed before or after printing.
- Can be very sensitive to moisture (depends on formulation).
- More warping than most plastics (depends on formulation).
- Oozes more than other plastics (depends on formulation).
- Generally less rigid than other plastics (depends on formulation).
- Limited color selection, you have a choice between white, ivory, and everything in-between.
Nylon is one of those materials that has really expanded the utility of 3D printing. It is great for parts where strength and impact resistance are needed. Taulman’s 910 expands the possibilities even more, providing more rigidity than standard nylon. If I need a part where a failure would be catastrophic, I’ll usually try to make it out of nylon. Keep in mind that nylon usually has a very low glass transition temperature, usually below that of PLA. I haven’t had any issues with this, I don’t think it softens as rapidly as PLA, but you might get significant creeping at higher temperatures.
- Hotend Temperature – Usually around 250°C. Nylon will print lower but layer adhesion becomes an issue, I generally want it hot enough that it doesn’t delaminate. Too hot and oozing gets worse. Check with Taulman for recommended temperatures for each formulation.
- Bed Temperature – I usually have the bed set to around 80-90°C, which is well above the glass transition temperature of nylon, but it doesn’t seem to be an issue. Taulman recommends much lower temperatures, which I haven’t tried.
- Bed Adhesion – I use glue stick, two layers applied just before starting the print.
- Moisture – Nylon is very sensitive to moisture, I’ll often leave it in the oven on warm before starting a print. I don’t like to leave nylon filament out for more than a few hours (if I was using it for a very large print, I’d probably put it in bag with dessicant.
Taulman 618 Nylon* | Natural | 2012
Diameter: 1.72 – 1.78 | Opacity: Moderate | Origin: USA
618 warps a lot, Taulman bridge is much easier to use. I don’t see any reason to use this over Bridge nylon, unless the small color difference matters to you (618 is whiter and has an attractive pearlescent finish). It works well for cold pulls, which is all that I use it for these days.
Taulman Bridge Nylon* | Natural | 2015
Diameter: 1.67 – 1.83 | Opacity: Moderate | Origin: USA
Less warping than 618 Nylon, darker off-white color when compared to 618. Bridge is much easier to print with than 618 (less warping,less sensitive to moisture). This is my go-to plastic when I need to print something that needs to be indestructible.
Taulman 910 Alloy* | Natural | 2015
Diameter: 1.65 – 1.78 | Opacity: High | Origin: USA
More rigid, more transparent, and slightly more yellow than Taulman Bridge, feels more like other rigid plastics than nylon (I’m n0t sure what kinds of plastics are in it). I haven’t used it much or tried stressing it, but it has worked well so far and I like the extra rigidity. I expect to be using this much more in the future and it may become a new favorite.
Notes on filament brands:
Atomic Filament - They target 1.72mm as the average diameter of their 1.75mm filament (according to their FAQ) so that's usually a good default diameter for their filament, their PLA is usually consistent enough that you don't have to measure each spool. All their filaments are made in California (moved to Indiana in 2017) and they help support this site.
Colorfabb PLA/PHA* - The extra flexibility of PLA/PHA is great for thin, small, or flexible parts that would be too fragile to hold up with regular PLA. It also prints with a satin finish that looks better than the glossy finish I usually get with PLA. Despite the PHA content, I classified PLA/PHA with the other PLA filaments as these differences are fairly subtle and it prints with similar settings.
eSun* - eSun filament is sold and sometimes rebranded by a lot of different sources and I don't know if there are differences between them other than the different spool styles. For this list, I assume they're the same. Microcenter's Inland filament is currently eSun filament and the cheapest place I've found for it (if you don't account for shipping). They also sell Inland* filament on Amazon with free prime shipping. Most of the eSun filament in this list is from Intservo*, who sells on Amazon, but I have also ordered from Microcenter* and Prototype Supply*.
Inland Filament* - I assume all the Inland filament is from eSun (see eSun above) and I've mostly linked to Inland spools because it's cheaper and I prefer the solid black spools.
Honeycomb Drone* - Some spools are advertised as 3lb spools, but are standard 1kg spools. Prices fluctuate on Amazon, I've seen prices under 10 and over 40 USD. The spools I ordered were between 9 and 14 USD.
3D Solutech* - Proudly claims that "All our materials are purely grow and made in the USA", but the spools and the labels under their stickers are identical to other filament I own that came from China.
Places to buy filament:
Amazon* - One of the best places to buy filament, I believe they even accept returns if you don't like the filament (I haven't tried that myself, that's partially why I have so much of it).
Printed Solid - They only sell the good stuff (Colofabb, Taulman, Fenner Drives, Polymaker, etc.), and are kind enough to send me some samples to try occasionally. They sell filament samples which are great for trying out some of the more expensive filaments. They also have a store on Amazon*.
Atomic Filament - Good filament, free shipping, made in California. I check their site often as they're adding new colors / types regularly.
Microcenter - Good place to order eSun (branded as Inland) filament if you have a store nearby or are ordering large quantities (Shipping where I'm at starts at $6 and increases by $1 per spool). They also sell on Amazon* with free prime shipping.