Feel free to share the video on Facebook, Reddit, Twitter and other social media!

@NicMediaDesign

4 жыл бұрын

Why don't you share your videos on r/3Dprinting or elsewhere?

@PRO3DESIGN

4 жыл бұрын

Shared in my V-King builders group. You have the best videos

@Unmannedair

4 жыл бұрын

I found uniform flow to be highly important for high speed printing. With high speed printing you're only cooling the skin of the extruded plastic, so less is better.

@rico3696

4 жыл бұрын

What kind of PETG filament do you recommend? AprintAPro does not supply filament anymore, would you still recommend DasFilament?

@CNCKitchen

4 жыл бұрын

Das Filament is good stuff. Still use it regularly.

Print a Benchy. Scan it. Print the scanned Benchy. Scan the printed Benchy. Print the scanned Benchy. Scan the printed Benchy. Keep going until the Benchy is unrecognizable.

@matneu27

4 жыл бұрын

Then sell it as art. You will get rich 😉

@kurtownsj00

4 жыл бұрын

kzread.info/dash/bejne/g3muytqJXdPKn9Y.html Jpeg style

@hakont.4960

4 жыл бұрын

Basically the physical version of the "Google translate loop". :D

@goury

4 жыл бұрын

This is against benchies license

@hakont.4960

4 жыл бұрын

@_ David _ Yes. :D

Always print Benchy pointing into the wind.

@g60force

4 жыл бұрын

open the nearest windows pointing towards the ocean!

@keithkittler188

4 жыл бұрын

Should I do this with ABS?

@vRachel

4 жыл бұрын

@@keithkittler188 do it

@pr0xZen

3 жыл бұрын

@@keithkittler188 I believe PEEKs will yield more usable strength than ABS. Unless you have back warping trouble. Then you need more focus on ABS.

@rossmarzano

3 жыл бұрын

Never piss from the windy side of the boat.

Your videos are always really really well done both for simple watchability and indepth testing Thank you very much!

@CNCKitchen

4 жыл бұрын

Thank you!

I can’t believe my first comment is about the fantastic book you mentioned in your ad! I’m a pilot, and, while not really an engineer, can really appreciate the skills. That is a _fantastic_ book! I’m also humbled to say that I know people who participated in the early days of the Skunkworks.

My 9to5 is being test analyst and I can say your videos are a joy to watch. You know what to test, what to include in scope and what to leaves to chances and assumptions (coz it is impossible to cover all scenarios in a completely digestible video).

Video starts at 4:49 Too long ads works against advertiser.

@KillerI-gc4fe

4 жыл бұрын

Ads usually never influence what I buy anyway.

@dylan.m8865

4 жыл бұрын

cgwworldministries advertising has a huge impact on sales. Sometimes it is more subconscious than we realize.

@themanhasnoname4984

4 жыл бұрын

@@dylan.m8865 aren it against my privacy to alter my sunconcius mind?? -as i cant directly erase any ad from it!

@you_just

4 жыл бұрын

Duck it’s funny that you think advertisements don’t have an effect on what you buy.

@Gomisan

3 жыл бұрын

thankyou! Saved 5 mins of my life

Thank you very much for this illusive test! As 3D printing is a field of mostly hobbyists (only those share information), many sources are very contradicting. Your (and others ofc) rigor really drives good quality information spreading and clears very important questions. Much needed answers should be found for strength, since quality vision based is really well explored, but repeatable strength tests are VERY rare. Since I build mostly usable parts this is of high interest to me - Thank you very much! Keep it going!

@truantray

4 жыл бұрын

3D printing on KZread is mostly semiemployed man children making pointless knickknacks, and one stripper.

@TheSuburban15

3 жыл бұрын

Just getting into PETG now. All the contradictory information is rather confusing and irritating.

I tried to get a job as a mechanical engineer at Skunk Works. By the time they got back to me (almost a year later), I had already accepted another job. This other job with General Physics eventually sent me back to the rocket site at Edwards very close by. That was about 20 years ago. I worked there for a couple of years. The desert there is miserably hot and windy. I love your informative videos. I make parts for function and don't care how ugly they are. I will try to print with less cooling to see if I can get stronger parts.

As you already have the installation for annealing, it could be very interesting to see if you can cancel the impact of cooling with annealing. It could be a good way to have both of gemometric quality and strengh performances.

@solventlessherbalist135

6 ай бұрын

Have you tried annealing pla with salt or sand or something similar? If so how did you change the scale of your model before printing?

BAM! One amazing video after the other!! You are killing it. You answered so many of my questions already in 90m of videos using science this is superb I am out of superlative to describe how impressed I am.. I'll have to review these videos again and again because so much useful info it is mind blowing. I was also under the impression that cooling was having a huge impact on layer adhesion. Thank you so much for doing this video and getting so deep and technical about it that you answered all my questions and many more I did not even think about yet... Also, 3d scanning to conpare actual print to the model is so cool!

Stefan, I listened to that audio book a few months ago and I was depressed when it was over. As an engineering student I felt the same as you about the technical struggles they faced. I was also very intrigued by the fact that Skunk Works had to literally invent, and fabricate, new tools and methods in order to achieve their design goals. Also, great video!

@dagoelius

4 жыл бұрын

Thats what I loved about Skunkworks.

what a video. thank you for getting to the point about almost EVERY question I have about cooling. PLEASE keep it up and never leave my feed!:)

Very nice! Independently testing all the major parameters is a great idea. Looking forward to the rest of this series. Thanks Stefan!

What an excellent video Stefan!! Thanks for doing this kind of tests and sharing your results.

Your videos are always great. Thank you for your scientific/technical approach to every topic you investigate.

Thanks for making this video, I was curious and your results confirmed. Excellent work.

I always enjoy watching these tests, you know your doing well when Amazon says hi!!

Thank you Stefan for your professional researches ! As a beginner in 3d printing field I need the information you provide on your channel.

Another competent video with short and to-the-point dialogue! It is so important to note that filament from different manufacturers can behave in totally different ways. It would be interesting to see strength tests with different colours too, as I have had dramatically different results for the same part made in different colours.

Absolutely a pioneer for us in the 3d community. I thank you for the time and effort you put into your work. Thanks again and again! - Andy

I was JUST wondering about this! You're always right on time with awesome testing for my questions. :)

Always been printing sucessfully without cooling and with the lowest viable temp for layer adhesion - very nice to have seen this quantified so thank you very much for that 👍

Thank you Stefan, this video is cool and helpful! I love how your engineering comes out in your videos!

Great info, thank you. I especially like your attention to detail, not just accepting the results, but proving them by using sensible thoughtful tests. Thank you :-)

Very interesting facts to look at my next prints. In my opinion the issue of parts strength is important on things which design is given or you couldn't make bigger/stronger. 99% of the parts I print I created self and try to make them stronger by the design, if needed or failed by the first test. If I copy a broken part (that is not available or too expensive) and print it, I had to use all settings, including your video, to make sure the part will be able to replace the original.

Thank you! Was waiting for a test like this! Awesome! :)

I really like how thorough you are

Hey Stefan, Deine Videos sind echt der Hammer! Konnte dadurch meine Produkte wirklich um einiges optimieren. Vielen Dank!

thanks for this. cooling vs adhesion was my first thought the first time i saw an fdm printing.

awesome video! I've actualy been looking for just this all week. thanks!!!

Very informative. I am new to 3D printing and will be receiving my first printer today, so am looking forward to printing. Information videos like yours is very helpful and an enjoyable learning experience. Thanks!!

@emmanuelrodriguez2346

4 жыл бұрын

I'm receiving mine tomorrow. Also watching videos xD

Great technical video. Love your stuff keep it up!

Yess brah, your vids are so well tested mate

I literally just posted this question to one of the FB groups I'm in regarding printing of an airboat hull for RC. My posit was that lower parts cooling speeds would enhance layer adhesion and in-turn assist with watertightness. Thank you for this video.

Thats is the best audible commercial I seen. I might actually check it out this time.

@CNCKitchen

4 жыл бұрын

Do it! Great book.

Phenomenal video as usual. I’ve probably watched it a dozen times.

Good tests! This shines some light on a set of tests that would be useful to see about layer adhesion with print speed and temperature. Of course fan speed would play a role. Lower print speeds/higher temps I would think allow for more heat transfer from the nozzle to the layers below increasing adhesion or decreasing.

Thank you for your research and effort making this video!

Always quality work Stefan, great stuff and very helpful.

damn...excellent use of Gom equipment and software to make the thesis. amazing work.

Thanks for been very technical precise with your videos.

Love your videos and dedication, you are my 3D printing data reference encyclopedia 👍🏻

Great video and as a fellow Engineer I appreciate the testing approach and data layout.

Great video. Thank you for educating the 3D printing community.

Fantastic review I go newer over 30% cooling with PETG, at my Tron cooling on my Ender 3. Thanks for sharing 👍😀

Very informative video and a great way to show one of the many ways to use 3D scanning in quality control. If you use the tool deviation-label you can mark many locations on the STL file and see the exact deviation on that location. That is the tool I used in my video about my warped bed plate, for my CR10.. If you have any questions about other tools in the software or about the possibilities with the Core scanner feel free to contact me! Thank you for making great content, I’m happy to see that you have some sponsors to support the time you put in these videos 👍🏻

I'd love to see how print temperature interacts with part cooling. My favorite PETG settings are 270C and 60% min fan speed on Mono-price I3 with the Dii duct.* This gives good overhangs and layer adhesion sufficient that the fracture surface of a hand broken test doesn't follow the layer lines. Normally this would also cause hellish stringing, but I print from a dry-box using molecular-sieve/Zeolite desiccant so my filament is SUPER dry. (* haven't calibrated the hot end, and PIDs needs tuning. often reads 255C during prints)

@TheSuburban15

3 жыл бұрын

Well, I guess that kinda confirms that my 235 degree setting was too low.

I’m quite new at this but have already figured this out. I mostly print ABS because it’s easy to get a nice finish and further refine it. But I’ve got some excellent PLA prints out with much higher temperatures than usually recommended and practically no cooling. Empirically, these are substantially stronger than cooled versions and look much better too. Good information here! I like your methodical approach.

Very well done!

It's so refreshing to see somebody with an engineering background do truly valid testing on 3D printing. Great content :)

Thanks for the inf! I just saw this at the end of a 6+ day multiple print project that needs to be extremely strong.

I use Das filament petg and I am pretty satisfied. I can report that I have found small variations between types of spools. For me the transparent was the best in printing quality, layer adhesion and overall strenght. I always cool 100% when printing and used the recommended 230 and 75 degrees for temps. Thank you for your efforts and your videos. It really helps everybody that deals with a 3d printer.

Best 3D printing channel so far

This more or less validates everything I've observed so far when printing, but I think there's a few things worth mentioning for newer users: - More emphasis on slowing down prints/layers and tuning that. I usually slow down the print for layers below 20-30 seconds, and kick up the fan for layers below 10-15 seconds (depending on filament of course). - Super-important: Separate bridging cooling settings! Slic3r, Cura, S3D all have this (not sure why it's missing from Ideamaker, last time I checked), and I set it to full blast when bridging, which is critical on a 0.6mm nozzle! I still sometimes get artifacts as the fan takes time to spin up, but most of the time it works remarkably cleanly. - In addition, I think some slicers might offer separate overhanging cooling settings. I don't think there's an ideal implementation of it, where it would adjust the fan speed based on the overhang angle and strictly limit it to just the overhanging region, but I'm pretty sure Cura had an option for it at some point, and it's better than nothing. Overhangs tend to be where I have some trouble, even when following the 45 degree rule, simply since I can't have the slicer crank up the fan for those regions. Lastly, having visited your videos on how print temperature affects part strength, I think it would be interesting to visit a combination of the two factors and how to tune them together for different filaments, at least if there's anything new that you find. Thanks for covering the topics of 3D printed part strength. There are very few resources on it online, I had to learn most of it on my own, and it's nice to throw some proof at fellow 3D printing hobbyists that there are better ways to do things lol.

@M.V.P.

4 жыл бұрын

good comment.

@poisonouslead85

4 жыл бұрын

Bridging fan speed is an option in Ideamaker but I can understand how you missed it because Ideamaker's setting UI is trash. Go to advanced settings > Other > Enable Bridging Detection and then the options aren't greyed out

@tsugha

3 жыл бұрын

this is pure gold

Thanks really interesting, so what we need is Cura to make an update that varies the fan speed based on overhang angle ( no overhang = no fan) to get stronger prints whilst keeping the quality high. That would give a good compromise of strength and quality.

I recently got a 3d printer. Based on your Benchy that was smooth on one side and veiny on the other, that helps me understand this one print of mine. I still haven't found a good balance of layer time to cooling time and what not. Every model is going to have custom settings I guess. To a degree.

These videos are ridiculously useful.

A very excellent and informative video, thank you for your efforts!

Thank you for the video! It is very full of information!

Thanks for doing these in-depth investigations! One piece of often information I often struggle to find is quantitive information about the warping properties of filaments. Given that I most often print molds for casting precise technical parts, warp is about the only material property I really care about; and not just if its low enough to stick to the bed; but if I can count on my holes having the right spacing, and if rods will turn into bananas or not. There are some filaments out there like ABS-X or some PLA variants that claim to be zero-warp. Also, some say that a heated chamber helps for PLA just like it does for ABS. But an actual in depth investigation of the matter, is something I have been unable to find. Perhaps you will find it interesting to do something along those lines in the future.

Thx for this comparison it get even worse if you print in a cold room (once i wasn t able to finish a print by a room- temp of 17°C with PETG it cracks while printing with fan on). Would be interesting how quality and strength comes out in a heated chamber with cooling fan which throws hotter air on the print :)

Thanks you, very interesting your tests

Love the detailed investigations! TY!

Excellent work. I learned a lot on this video. Thanks!!

Very well done your vids are always Amazing! Thank you so much for all your hard work

@CNCKitchen

4 жыл бұрын

You're welcome. Very happy that people seem to enjoy what I'm doing.

Greight video, thanks. I find 0% fan is best for most prints, but I have it on 20% for areas that are unsupported (bridging), support interfaces, and for very small features where the layer time would otherwise be too short. But I agree, no cooling is usually better! Edit: This also applies to TPU!

Excellent experiments Stefan. I believe using a thicker layer height when no cooling is used would reduce the deformation in your print since the nozzle will be touching the model for far less time. Also, one more thing to look into when testing for strength is the printing temprature. I noticed you used a relatively high temp especially since you were printing with 0.15mm layer height and typically for PLA I would recommend 190~195 for such a fine quality setting. I print most of my parts with minimal cooling since they are mostly functional and mechanical. Would love to see you go more in depth in this topic in the next videos!

Thanks for sharing!

Great test! I would like to know the optimal strength of petg when adjusting temperature as well as cooing. Maybe even flow rate. Also for 3d scanning: i suggest to make in ear headset, use 5 minute setting silicon to get a deep earmold impression, scan it, remodel for purpose and then print multi material. This is a project I'm currenty working on. Gonna print the first part in petg then finish off the actual ear plug section in ninjaflex. Struggling to make Prusaslicer work for two different filament print settings in one print though. Great work! Keep it up :) You're adding much value to the community!

As always awesome test 👍

Very nice Stefan! You must try cpe from filamentum. It is the filament with the best layer adhesion i have tested and I use it for all mechanical parts on my 3d printers. Also petg type must be dry!

Every german be like: "As an engineer myself..."

@poweredbysalt4158

4 жыл бұрын

little known fact: in Germany you get your engineering degree when you are born

@Mikepet

4 жыл бұрын

@@poweredbysalt4158 As a German myself i can confirm that.

@miquelmarti6537

3 жыл бұрын

having lived in Germany for a while I can confirm this is actually true. Also true that they have the best engineers. It fits them :)

@pr0xZen

3 жыл бұрын

And, an engineer in Germany (Europe in general) has at least a 3y bachelor engineer degree. Not just "I work with something technical that involves problem solving" :)

@superkoksu487

3 жыл бұрын

@@videogamechannels360 ok just for you : Every asian by like : "As a Doctor myself..."

LOL.....watching the melted filament sticking to the layers as the nozzle went around the perimeter reminded me of the time I made pancakes and poured the batter in a ring of concentric circles that mixed together to form a solid pancake......the adhesion was good considering the pan was quite hot at the bottom but they came away quite easily with a thin edged metal scoop.......possibly it was the oil film.

Das war geil! Danke und LG aus Salzburg

Thanks for all of your great content Stefan. I really appreciate all of your hard work and I'm always anxious to watch your videos when you post them. I do have a question for you... I have a CR10S printer and I've only recently acquired an E3D Titan Aero direct drive to convert to an all metal hot end. I know you put an Aero on your CR10. There seems to be actually very little choice in terms of the mounts for the Titan Aero for the Creality printers that accommodate a part cooling fan, and in light of your findings in this video, one that will provide adequate all around cooling of the parts. How have you solved the mounting problems?

omg you did every test... this is why design of experiment is created to do like 10% of the work and stil have verry accurate results

Thanks for this video, very interesting as always. Reagarding the GOM Scanner: I would love to see how you can convert the scaned surfaces of an complex model into a solid model like step. With a solid like step it is easy to modify it afterwards.

Great content. Thanks for this research.

Thank you for such comprehensive testing Stefan! I found it very useful. I kept wondering about your suggestion to print slower in order to let the PLA cool naturally. Do you think that the part being cooled naturally adheres better than low fan setting cooling? It still cools, doesn't it? Cools more evenly perhaps (inside and out)?

Very interesting and informative. Thank you

You're definitely right about the Ender3/CR-10 heatbreak fan. I upgraded a CR-10 mini to an E3D v6 and when I printed a benchy when I hadn't printed the cooling fan mounting bracket yet, it was the most horrible result I ever had. I'm also thinking this may be related to the watertightness of 3D prints. I used to get some good results with small boxes, but a large-ish boat I just printed is leaking. I'm going to try cranking the temperature up and disabling the cooling fan. It will still be cooled a little bit due to creality's design. I really also want to get my own universal testing machine running. So much to test, like creep and fatigue life. My machine is based on a raspberry pi though so I still have some programming to do.

AWESOME! Not only great information but an audible book suggestion... ok dude... I'm subscribing... My 3d printer is in the shop... which is only sometimes heated so... gonna have to come up with a method of guessing.

Skunk Works is a fantastic book! Fans of Kelly Johnson will especially like the 1st half, where Ben describes the development of the SR-71. The 2nd half is about Ben's time leading the Skunk Works after Johnson retired, and centers around the development of stealth technology.

Another great video - Thanks.

great job ! thank You !

Definitely how speed influences the strength. From 10mm/s to the max. Visually I find just a little difference between 30 and 75, so I'm really interested in strength.

Well done video on a very important topic! I have suspected that part fan speed should be high only during overhangs -now you have proven it! Now I wonder if post cured (what they call annealed) PLA parts can get to 'no-fan' strength but use a bit of fan to help overhangs. Post cure of PLA functional parts is becoming my standard because heat deformation and creep are unacceptable without it.

That B roll though...subtle and well done.

I agree with everything you said. when I have to print something important and quite strong I do not use the fan, I slow down the speed and I use 0,16mm layer height. in this way, I get stronger results.

At 9:45 you can start seeing the collet slipping and shortlz afterwards the test bone breaking, maybe this sudden 'slip & grab' might introduce unnecessary load and cause premature fail of the test part?

I appreciate this testing. I’ve done quite a bit of fan testing on a few different printers. I find that with PLA, I need 80% (at least) to get a nice 3D Benchy at 60mm/sec on the Prusa MK3 with PLA. With PETG, I can lower the fan speed to 40% and get good prints.

@tradertom4843

11 ай бұрын

For petg, do you lower the print speed when you turn down the fan to compensate for sag? I adjusted my fan to 50 mm/s with the fan at 60% and it sagged in the middle parts of the project

@JohnOCFII

11 ай бұрын

@@tradertom4843 It depends on the size of the model -- larger parts tend to need a bit more cooling, especially if there are bridges, or holes.

Great work Stefan, will you also do the stress test after an annealing process? Perhaps that will counter act some of the negative effects due to cooling during the print process.

Great work! What is best? To have the fan blow on the nozzle or on the filament as it is being laid down?

Great video, Stefan! Does the scanning software give you a volumetric difference between scan and reference?

Very well done. I have been looking at scanners myself and would be interested in scientific look at the accuracy of them. Like maybe print an object, scan it, print another from the scan and continue cycle to see what happens?

The print temp makes a huge difference, I use eyrone PLA and it doesn't stick well at all below 215C cooling or not. I would think the different fan settings make more of a difference at higher print temps. It would be interesting to see if the Cura draught screen makes a difference as its supposed to be like a mini heated build chamber around the part. I was going to try some ABS but I have an ender 3 so I need a different fan shroud first.

Great video, was very helpful for me, vielen Dank

your videos are awesome man

use the scanner to check the linearity of your tension test rig and then see about accounting for its misalignment or physically adjusting it