Faster 100% Infill Prints with Cura 4.13 on Ender 3D Printer

Chuck shows you Cura 4.13 and a trick to get 2x faster 100% infill prints on an Ender 3D Printer. He shows you all the tricks he used to apply an Ultimaker Profile with Extra Fast printing and apply it to an Ender 2 Pro. He shares the custom profile below. Check it out right here on Filament Friday.

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Filament Friday Extra Fast (0.28) Cura Profile

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[FilamentFriday]

Many people have asked to compare GCodes side by side. I did it while creating the video but couldn’t find anything obvious that creates such a time saving. So I didn’t show it.

[frankimanX]

when you select 100% infill you can see at each layer that the infill is now yellow (not orange) it actually becomes a top/bottom and uses the much slower speed of top/bottom instead of infill, to bypass this you can use 99% infill, you'll see then that the infill is orange like normal and uses the infill speed

[beauregardslim]

The title made me think you were talking about a trick that I often use in Cura: Turn everything off except infill. Turn perimeters to 0 and then add however many perimeters you want to Extra Infill Wall Count instead. This eliminates a pile of travels and retractions and makes a print much faster. If you just need a functional part, it often works out just fine.

[jdulrich]

This video inspired me to investigate, and I think I figured out what's going on and how to easily get this benefit on older versions of Cura. I'm using an Ender 3 V2. If you set infill to 100%, Cura converts every infill layer to a top/bottom skin so it ignores your selected infill pattern, and prints the Lines pattern at top/bottom speed which is slow. The workaround is to set infill to Lines (or ZigZag) at 99%, and then if you're worried about the tiny bit of extra line spacing, you can set infill extrusion rate to ~101% to compensate. That cuts the print time down to roughly what I'm seeing with the Extra Fast setting, and the preview looks the same.

In real-world use, I find that Cubic 60% has been easily strong enough for anything I've needed to do so far, especially for compression. I printed a PETG test block with this infill, and could not dent it in my 6" vise.

[CanardD]

This trick also work for lower infill prints ! I did a 10 percent infill for a board game insert. Went from 9h30 print to 4h50. No stringing, no mods and stock nozzle. Thank you so much.

[ratgreen]

My prefered way to speed up 100% infill parts, is to just use really really high wall thickness, and set the infill to 0. That way the printer moves more fluidly (along the path of the part wall, instead of the constant ziging and zaging, which is slow as it has to change direction constantly). The estimated print time cura gives you is usually off, my method is usually quicker than the predicted time. I probably wont use the crazy accel settings shown in the video as I prefer to have less risky prints that are slightly slower, than waste time reprinting because of shifting or other issues.

[parasyte]

This is happening because there's hidden settings in cura for acceleration limit.
There's a plugin in the market you can download which shows them.
It's set to default 500.

[ed_halley]

Maybe it's not suitable for your audience, but I was hoping you'd dig into WHY the two gcodes achieve such different results. Is it taking a different path? Is it using a different line width or flow rate so it doesn't need so many zigzags?

[MrStoneSMS]

Just tried out these settings with my Ender 3 Pro. Worked beautifully, no stringing. Thank you for this and all your informative videos!

[jimmorgan]

I really appreciate your time making these videos, I’ve come to rely on them for making my printing experience more fruitful. This one is especially useful. Thank you 🙏🏻

[wbrooks]

I only found your channel a few weeks ago, but man I really look forward to Filament Friday!

[mvdesigncustomworks]

I've Just started a long project on my ender 3 and this profile will save me several days of waiting. Thank you!

[pointlessonline]

This is a game changer! Thanks for sharing this. I just tried it on my Voxelab Aquila.
I printed some valve knobs on my usual profile that took 1h10m each at 10% infill with a .2mm layer height and 60mm/s print speed. I printed the same knob on this profile at 100% infill with the .28 layer height and 50mm/s and it took 35 MINUTES!!
Cura tells me even at .28mm with my normal profile it would be an hour, so this has cut my print time by nearly half. I'm using this going forward unless it's something intricate and has small details.

[chadwickjones]

Fantastic and functional to boot! Loved the modding thought process. Gonna try modding my 3v2 for ultra speeds! Awesome as always!

[louiel]

Thanks for posting this, never even thought of doing something like this till now. I did get a working profile for my ender 3 after a little adjusting, printed a decent benchy in 1 hr. 3 min. Great videos keep up the good work and thank you.

[pkpkpk]

I have tried this hack on my Ender 3 with marlin 1.9 using petg - and it took almost half the time - thank you for this material

[ratgreen]

An easy way of achieving the same thing is to set the wall thickness to something stupidly high, so the entire model is printed as if it was a wall. This makes the lines follow the pattern of the outer wall, which is usually longer and sweeping which means less direction changes = less accell and decell = less time printing during those slower speeds. Compared to the 100% infill, which is very zig zaggy which means lots of direction changes = lots accell and decell needed = more time spent printing during those slower movements

[spock]

My bet is that it works by increasing line width. When it comes down to it, this profile still needs to extrude a certain volume of plastic to complete the part, and if it's not moving the print head way faster or increasing layer height, the only way to get more plastic out in the same amount of time is increasing line width.

I've actually experimented with this in Prusaslicer quite successfully. For extra fast printing I set line width to between 0.6 and 0.8-mm on a 0.4-mm nozzle with 0.3-mm layer heights, and then at 60-mm/s you get a volumetric flow between 10 and 13-mm^3/s. For an E3D v6, that's about as fast as the printer can physically melt the plastic. The thicker lines also mean the printer needs to make fewer passes over the same area. In Prusaslicer you can also set a volumetric flow rate limit, so I'll set things up like above, set print speed to something really high, like maybe 100-mm/s, then limit volumetric flow to maybe 10-mm^3/s. This basically assures that the printer is always putting down as much material as possible at any given time, which gets you pretty fast prints. The benefit is, of course, most pronounced at higher infills, but it speeds up normal prints too.

[AsiAzzy]

For your part in particular, i'snt it better to have like just perimeters and no infill?

When i print circular stuff (bushes, collers, etc) i always go all perimeter (set 20 perimeters or so). It is much more plastic extrude per time if it goes continuous circular sweeps than the angled infill. Also it's more resistant in tension on the direction of the perimeter. And since it's a collar, it will be much better for this task as it's all tension around the pole.

In my experience it also saves a whole lot of time compared to few perimeter and more infill (especially 100%)

[JacquesMattelaer]

Thanks for digging in in the Ender 2 Pro capabilities!! 👋