Rethink how you use 3D printer infill!

Is there a "right" way to use 3D printer infill? Is there a "best" pattern? Should you put your filament into the perimeters or into the infill for structural parts? I'll try and answer all those questions and more!

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[StrifeD]

Will watch this later, literally just popped in to say that's an S-tier thumbnail.

[SaHaRaSquad]

I like how the video doesn't waste time with lengthy testing recordings and just talks about the results. Also, I like cubic too though I go for grid when strength doesn't matter much as it's faster.

[GrassieBean]

Was about to start my most ambitious 10 hour print with gyroidal infill. Chose gyroidal on the basis that it looked cool. Decided to watch your video before I began. Changed to Cubic based on your results and saved 3 hours on my print time. Thank you sir for the tip. This was S-Tier YouTube content.

[mikejackson]

One of the patterns you thought was just in there, I actually have a specific but incredible use for. On the concentric pattern, I actually have two uses. One is purely aesthetic, on transparent filaments sometimes you don't want the infill to show and strength isn't paramount. The second use is more functional. On TPU prints, flexibility is always needed, but it can vary in how much flex is desired in one axis. I find the concentric infill makes for a very strong vertical strength but very weak lateral resistance. This is super useful if I don't want to spend hours in CAD to do the same.

[nemesis_]

I appreciate the hours/days spend doing this massive comparative evaluation

[SixOThree]

It's not often you can finish watching a video and immediately start using that information. Literally my very first print after watching this video was where I got to use this knowledge. With a complete enough understanding of the subject I can quickly make good choices.

How I look at that dropdown has completely changed. Before this video I would "play around" with various settings. I can still play around. But now I know what to look for. I know what to choose, what to watch out for, and what to expect.

This is really good stuff. Oh, and nice shirt!

[BramCohen]

A silly problem with cubic is that you can often see the infill pattern slightly through the outside in daylight and it makes the parts look cheap where with gyroid the inside looks fuzzed out.

[sevenbravopro]

So glad you did this in PETG. i make a line of products for the hair industry and primarily use PETG.This video has changed how I will be utilizing infill differently now. Thanks again.

[GumusZee]

Concentric, Hilbert curve, archimedian chords and octagram spiral are great for top/bottom infill. They usually create a better looking surface finish than the standard linear infill.

Octagram spiral with a silk filament on a smooth sheet give amazing results.
Hilbert curve on top infill makes for a surface comparable to a bottom layer on a textured sheet - helps to make both sides look similar in PETG.

[code-fox]

This was an amazing round-up, with straight to-the-point theory vs results. Thankyou for not making the video 400% longer by showing every single test iteration like so many other channels do. That shows that you understand what you're talking about without the need for "fluff".

[MrCythos]

Another vouch for the concentric, hilbert, archemides, and octogram is that as they're completely free of any isolated pockets and can be taken advantage of when you want to fill in the void fraction of a 3d print to further strengthen them. Such as as filling them in with resin.

You can't do that with a lot of the other infill options.

[Garage]

This aligns pretty well with my theories and experience. I generally used cubic wherever I wanted maximum strength and a faster to print infill where I just needed support. I also tend to rely on more shell thickness any time I want a part to be robust. Thanks for all the testing!

[JanTecEngineering]

Great tests and a perfect way to present the results.
Also, I have say that your ad integrations are very smooth without being annoying - love that!

[TheMagn]

Concentric and archimedian chords have some use for flexible materials when you want a more flexible infill. It still provides support for top layers, but it doesn't make the part as rigid as something like cubic would.

[Joseph-gli]

One advantage that Gyroid has is that it allows the print to be filled internally to add weight or possibly with foam for strength. I've printed some tall sculptures that I've added sand in the base to make them less "tippy". The closed patterns won't allow the sand to flow beyond their individual chambers. I also like Gyroid for it's multi-directional support.

[csg]

I wish a slicer would implement a feature to be able to draw internal walls in parts. You can trick the software to do it, but it doesnt always work great. You could tie features together with thick walls, and use a low infill everywhere else.

[motionsick]

That Prusa XL looks so cool. A lot of asthetically pleasing touches to this video. Thanks for not printing the tests in yellow and red.

[BenMagargee]

I just started 3d printing and I'm working on my first project that involves modeling and slicing. This was incredibly comprehensive, thank you!

[negative]

This is one of the best thumbnails I’ve ever seen on any channel. So much so that I’d say it should be your channel image.

[gnux]

I'm a noob to 3d printing and I'm happy to learn that my intuitive choice of adaptive cubic with less infill and thicker shells is such methodically proven 😀