Fast 3D printing is bad for Strength! (and how to fix it!)

Have you ever noticed that you printed TOO FAST? Oh, and check out our CNC Kitchen products at cnckitchen.store/ or at our resellers www.cnckitchen.com/reseller

As always, another thorough and professionally produced video. Your content is always top tier.

As always, an educated, scientific, unbiased 3d printing informative video.

Thank you for not doing the dumb shit on April fools like releasing a pointless waste of time video. This video is so great and informative!!!

To print stronger functional parts faster I use a tip from one of your earlier videos - print wider lines. For a LOT of my printing these days I'm using 0.8mm lines with a 0.4mm nozzle. With Cura 5, thin walls don't suffer, since the slicer will generate thinner lines when it needs to. You still need a higher flow hot end, of course, since printing wider lines at the same linear speeds means more plastic per unit time. Luckily my Artillery Sidewinder X2 has a Volcano hot end.

When I first got the X1C I banged out a few parts at the default settings, and noted that the print quality was pretty good. Then I cut everything in half (from Bambu's defaults) and discovered this made the print quality *amazing*. As someone who's mostly printing ABS and then sanding and finishing it to look like not-3d-printed, running the X1C at 50% of nominal and 0.12mm layers still gets me parts in half the time the Ender-5 did, and those parts end up needing about a quarter of the sanding and finishing work that the Ender-5's production did.

Great that you finally make a video on this topic ! Bambulab + CHT Nozzle is amazing, now need a bit more heater and cooling

Amazing video (as usual) Stefan. I'm glad that I can always depend on you doing proper experiments, because SOMEONE in the community needs to do it, and I don't think I have the stamina or work ethic to do this level of experimentation :) Keep up the good work.

I printed my Trident 350 parts with my X1 using ABS+ on generic ABS settings. I didn't notice any part strength concerns during assembly, but now I know to do PM checks more diligently. Thanks for the info Stefan

Bambu Labs said some months ago that they will be releasing their own high-flow nozzles. Hope they offer hardened nozzles for abrasive materials, as most current high flow nozzles aren't hardened.

I just got my first printer and was trying to think about what was causing the change in gloss between layers when I stumbled on your video before bed. You saved me at least an hour of parsing through unhelpful reddit threads.

Always happy to learn from your videos Stefan. I hope you and your work-family are doing well with the work life balance.

Yes! Been waiting for this... I've assumed the speed would compromise strength, so it's great to see it go through your usual battery of tests.

Thank you for the anti-april-fools warning in the title

Awesome video. Made pretty much the same experiences with the aftmermarket hotend + CHT. Currently my go to hotend + nozzle combo for the x1c. Looking forward to a hardened version.

Excellent video Stefan. I really think Bambu has hung their hat a little too heavily on "Speed" and they need to tune in "Quality" presets. My own tuned profiles are significantly slower but more reliably produce better looking & stronger parts (anecdotally). My X-1 gets a lot of use with these profiles and I'm much happier for my needs.

It seems like Bambu Labs is constantly improving it's printers. Hope they see this and add this to a future revision.

Still a newbie and a former machinist I thank you for insight into issues I've been experiencing with my X1 printer and it's settings. My Ender 3 S1 Pro with Sonic Pad tuned produces faster, good finished and parts of solid structural integrity of a phone holder, clip style. Using the same material, settings (temp/flow) X1 produced gummy weaker parts that failed under the stress of the design. Again being new (December 2022) I wasn't understanding the "why's" for such failures. I will be looking into your suggested mods and settings. Thanks for your insightful efforts.

I love your practical scientific 3D printer testing. This is very useful information, and you provide a great education on important subjects most people don't consider, allowing us to understand our 3D printers and the 3D printing process to gain optimal results. Thank you!

Great video! For what it is worth, my old Fortus 250 (industrial printer) runs ABS at 305C and has a meltzone nearly 40mm long. And that machine has extremely tight temperature controls and uses quality thermocouples for temperature monitoring. Because of that I have become way more comfortable with pushing Temps through the roof while printing.