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Why 3D Printing Struggles with Curved Surfaces

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Curved surface finishes on 3D printed parts can often be challenging, especially with the appearance of layer lines as the part moves up the curve. In this video, we explain why these layer lines appear more distinct and guide you through some solutions that will help you improve the appearance of your parts.
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Produced by Slant Media

Опубликовано:

21 авг 2024

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Комментарии : 731

@slant3d 2 месяца назад

Full Video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ujAwxSx63FE.htmlsi=HF2mAYt7LmsiZhWc

@heavyweather Месяц назад

Do you also print multi material? Would you say it is more expensive to print a small part completely in PA-CF compared to the main body in PA and only ~1/7 in PA-CF? It's also preferable in 2 materials as I don't need the strength and abrasiveness in the lower part. At the moment I am handfeeding the filament at a certain point. Got an IDEX printer but the cooling time between nozzle change is not great, I'd rather print the nylon in a continuous way. It's a valve adapter. Just wondering how you would solve that in production. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-XK95hkC95I0.html

@jonslg240 Месяц назад

I feel like you missed way #2: sanding

@bWILLYant Месяц назад

Sand it

@stellataniaaa Месяц назад

😊p6

@aquadarkskull3248 Месяц назад

Special technique: Sandpaper

@yoavbenclaudia3073 Месяц назад

Honestly though, because that would remove any ugly layering. Even printing on the side still has the rigid wall, so sanding it down just seems the most logical.

@Muslim16572 Месяц назад

That's what I'm saying😆

@bappo218 Месяц назад

Bondo and sandpaper on top bro☝️

@Dimomult Месяц назад

While we both seem to be equally ingenious, i must concede that you are faster. Well done sir.

@bFOURdwZEROlf Месяц назад

I've done this on fingerboards (Yes Tech Decks) and it works!

@beez1717 2 месяца назад

You can also sand it down to get that curve if you have thick enough layers to support doing that.

@slant3d 2 месяца назад

Our videos deal with specifically mass production 3d printing. Sanding is fine for one-off parts, but sanding 10,000 parts is a lot of sanding.

@Donnerwamp 2 месяца назад

@@slant3dDepending on how the part is made. If you can strap them together and get a decend finish with an orbital sander, it's rather quick.

@Ninjaeule97 Месяц назад

@slant3d I'm pretty sure you could come up with an automated way to sand a lot of parts if you mass-produced 3d printed parts. The reason that no one does this is because 3d printing isn't designed for mass production but for prototyping. If you mass produce something you have the money to invest in injection molds.

@geraldsherwood6174 Месяц назад

@@slant3dThere's still layer lines though. At that point, wouldn't you want to just sand a fdm prototype then do injection molding?

@PeeperSnail Месяц назад

That’s a lot of microplastics

@jessicaholden3019 2 месяца назад

Orca Slicer (and by extension Bambu Studio) has a dynamic layer height option for this! No need to do teeny layers the whole way.

@extragoode 2 месяца назад

Cura has had dynamic layers for years too. Just in case that's your preferred slicer you don't have to switch.

@Wassermelonenbaum 2 месяца назад

@@extragoodetho you still should check Orca out and maybe switch anyways😅

@AckzaTV 2 месяца назад

Ya but I always just hold it down and sand down my mouse, cuz I want that shit smooth ...is that the same tool? The little lines?

@AckzaTV 2 месяца назад

Isn't orca slicer and banbu slicer all based on prusa slicer?

@Wassermelonenbaum 2 месяца назад

@@AckzaTV Orca is based on Bambu Studio which is based on prusaSlicer and slic3r. The people working on Orca seem to be quite fast at implementing new features and picking the best from other slicers.

@goswinvonbrederlow6602 2 месяца назад

There is also non planar printing. The top of the curve can be printed as a curved surface giving the same quality as printing it in its side.

@AustinDungan Месяц назад

Just waiting for the slicing software to make this easy!

@Darenz-cg9zg Месяц назад

@@AustinDungan not just software, also hardware. Ideally, the nozzle can rotate around to do perfect non-planar moves.

@tongpoo8985 Месяц назад

Sounds extremely expensive for not a lot of benefit

@oliverlacika4994 Месяц назад

@@tongpoo8985 you dont need to pay anything if you have a 3d printer

@2010ngojo Месяц назад

@@Darenz-cg9zgnot just the the nozzle. Part should be able to move too.

@daliasprints9798 2 месяца назад

Another option that avoids most of the ugliness, which is the inconsistency of having exposed diagonal fill, is to increase the number of outlines around solid fill so that the exposed part just looks like more perimeters.

@riba2233 2 месяца назад

Or use concentric top layers :)

@daliasprints9798 2 месяца назад

@@riba2233 That's an option too but I find it's ugly on actually flat tops, accentuates accidental geometry.

@riba2233 2 месяца назад

@@daliasprints9798 ah ok, makes sense :)

@brandonfarmer4323 2 месяца назад

Printing it on its side is a great solution for this issue, but also has the side effect of showing the seam for fully cylindrical parts. I’m looking forward to the new developments that further help to eliminate seam issues for cylindrical parts

@riba2233 2 месяца назад

Scarf seam solves that

@fbombtehgr3at 2 месяца назад

Also random seam positioning and fuzzy skin give a more uniform appearance.

@carlosrobles9148 Месяц назад

@@fbombtehgr3at I haven't tried the fuzzy skin option yet, looking forward to it and thanks for reminding me!

@szymon0900 Месяц назад

@@brandonfarmer4323 well, we are already there, seams are not really an issue since many years now (with correct settings). :)

@Someone-dv7hw Месяц назад

Ty for actually pointing out that you don't have to force the device to do what it isn't good at

@willynilly18films Месяц назад

Sandpaper: Am I joke to you?

@YAWN.... Месяц назад

@@willynilly18films zzz

@TheFrantic5 Месяц назад

Reminds me of the "vector vs raster scan" arcade monitor wars of the 80's.

@pythondrink Месяц назад

I'm not sure wym but you reminded me of the raster v. vector dilemma in web design

@TheFrantic5 Месяц назад

@@pythondrink You aren't far off, actually. Back in the day, virtually all monitors and TVs worked by shooting a beam of electrons line by line down the screen, producing a colorful image, but limited by big blocky images and low resolution. Someone had an idea to just use the electron beam to draw the graphics themselves on the monitor, giving you an image with smooth lines on every side, but was limited by draw time, with virtually every game limited to only drawing the outlines of graphics and characters. The most famous games that used the technique are Astroids and Tempest. Sadly the trend didn't last long as resolutions for games scaled up quickly, but some games still emulate the style for nostalgia, Vid-ribbon coming to mind.

@VeraTepes Месяц назад

Or just sand it to smoothness. Catefully, of course. Don't want to damage your beautiful creations.

@ReclaimerStudios 2 месяца назад

Something to invent: GCODE controlled heat plate to smooth out those edges

@linkeroniw 2 месяца назад

non-planar 3d printing is something people are working on to accomplish that, though there are still problems with it, particularly with clearances of the nozzle and the speed of the z-axis

@AckzaTV 2 месяца назад

They already have that it's a plugin called "electric blanket" it's on github, but only works in an old version of cura. I made that all up

@daliasprints9798 2 месяца назад

@@linkeroniwThat's why you want a hexa (6 axis variant delta with each arm independent).

@keenheat3335 Месяц назад

probably easier and more precise just use a regular mill attachment to smooth out the surface. With heat plate you got lot less precise heat projection, and might lead to key dimension sway. But g code wise, it's the same

@gtjack9 Месяц назад

@@keenheat3335That only allows for exterior surfaces to be corrected, the main benefits of additive manufacturing are that you can control the parameters of every surface of the part.

@shadydaemon4178 Месяц назад

At my old school, in a computer lab, there was a 3D printer and I was intrigued. They were trying to 3D print a perched Eagle with its wings spread out, but they’ve been only making spaghetti results for some reason, I figured that something was wrong but through years of occasional seeing 3D print videos, I realized that they could’ve built it in separate pieces if it was that tedious.

@gamerparadise6704 2 месяца назад

you could also use variable layer height

@pacotaco1246 Месяц назад

Integral Calculus IRL

@Muslim16572 Месяц назад

My go to solution: sand paper.

@catrinabrundage6052 Месяц назад

Watching this without even having a 3D printer

@drubradley8821 Месяц назад

I think that math is called "Inverse square law"... The curvature by radius by rise or drop by distance by distance.. it is complicated math, at first, but once it clicks in the mind, is is actually then really simple to dictate and predict in designing a part or drawing .

@Yves_Breeze Месяц назад

No. Just no.

@FireTheNuclearMissiles 22 дня назад

I don't even own a 3D Printer and I'm invested in these videos

@processingunit5321 8 дней назад

Perfect excuse to buy one

@AmmarAlshomali День назад

Sqrubbing it on sandpaper does the work as long as you perfectly sqrub it without doing it too much. Or maybe using a special mechanism that usues sandpaper to make your printed objects smoother.

@TheQwuilleran Месяц назад

Flatland: a circle has angled edges that are too small to perceive

@baconburger-zt9ro 8 дней назад

The easiest way around this from my experience is to rotate it so that the circular side is on the baseplate. Printing it square side down usually causes this problem. Unless you are using a resin printer i guess.

@HorseLoveUnites 2 месяца назад

For larger scale commercial smoothing of layer lines, you can use vacuum chambers or otherwise sealed chambers where a chemical solvent is introduced as an aerosol or gas to gently dissolve (smooth) the outer layer(s). Can be done in small home applications or larger commercial runs but there are always multiple solutions to a problem, just depends on how you or your business is already structured or equipped.

@linkeroniw 2 месяца назад

But that doesn't work on every type of filament, the only ones I have heard of that do it well are abs and polysmooth pla

@daliasprints9798 2 месяца назад

@@linkeroniwPolysmooth is NOT PLA, it's PVB. You can also get it (much cheaper) from various Chinese filament companies like YOUSU.

@linkeroniw 2 месяца назад

@@daliasprints9798 my bad, but it has been a while since I heard anything on it and the name is pretty close to pla

@saphirestorm7952 Месяц назад

This actually seems really helpful as someone who wants to make figures of my favorite video game characters when I get a 3D printer (Seriously I can't believe that Reject won't give us Dialovers figures, they're really going to force me to make a figure of Kino instead of letting me give them my money)

@priyabrata6152 Месяц назад

I cannot tell you how useful this could be in a classroom to teach Calculus.

@e-berry Месяц назад

Or you can use VLH or Variable Layer Height, which automatically decreases layer height where details are needed (in this case, at the top)

@reggie8370 Месяц назад

Besterer solution is to make it 1/8th thicker and have a master craftsman shave the 1/8th down so it's perfectly smooth. Trust me, someone out there is really that skilled

@vinod8941 2 часа назад

You can use adaptive layering with ironing to get the best result

@deisisase Месяц назад

I recognized 'print it on its side' right away.

@ksquallfangirl Месяц назад

Came here to say this!!! 😂

@Daves-not-here Месяц назад

Something that I heard helping with masking layer lines is to reheat the plastic after printing with a heat gun to partially melt the plastic and then smooth the lines over. Doing this can also increase the durability of the structure as well making it less likely to separate.

@sl_0gan Месяц назад

as a not owner of 3d printer, i found this useful

@alifarzaneh2726 2 месяца назад

Great videos man. Appreciate it Helped me a lot Keep it up

@stibiumowl Месяц назад

There is a way of putty-modelling that works very similar like 3D printing, but by hand and manual labor. Much more work, but no problems with layer lines.

@s13rr4buf3 Месяц назад

I can't believe he made this video about this issue and didn't even mention adaptive layers.

@beanallene Месяц назад

That's a pretty ingenious solution. My thoughts were to sand it smooth, but that's pretty awesome.

@liptontea8578 Месяц назад

If u print with Bambulab P1S, u can reduce the layer hight to a minimum of 0,08mm if u want smth in a really good shape.

@The_Ctzn Месяц назад

Can't believe Pat Cummins is 3D printing 😂😂

@codewithzi-5817 Месяц назад

Why does it look satisfyingly scratchable 😩

@Ruby2P Месяц назад

Dude, my dad is a 3D print guy, and he is insane about it.

@obsidian9998 Месяц назад

What about rotating the printing plate, so it never creates a shallow print surface? Is there an continuous hot plate attachment for dynamic printing surface?

@Dolimoe-vh9kq 2 месяца назад

How to print a smooth dome upwards: just dont! Wow thanks thats great. You could have at least suggested adaptive layer height. Its great to workaround but you didnt answer your own question

@bFOURdwZEROlf Месяц назад

Also finishing the surface helps! plan it slightly bigger than you need it then take away for a smooth finish if you have 100% infill on the outside surfaces

@___The_Paradox 4 дня назад

If we could 3d print using nano size parts, I think we wouldn't be able to precieve the unevenness.

@CoinnectedOfficial Месяц назад

Today I learned about physical pixels

@DukeDudeston Месяц назад

3D Printing is a hobby, for the average user this wouldn't matter much, most will be happy that their prints actually come out. If you want a quality finish you're going to have to work for it, this has always been the way with 3D Printing at least with FDM printers.

@thenamestails7152 Месяц назад

Me trying to print a sphere: 👍

@JakeyBro69 Месяц назад

You could also just sand the curved surface with sandpaper too

@IWontBuy-RP Месяц назад

You can put weathered copper above and under copper and itll go faster, you can fill a whole chunk and even automate it. Xisuma showed a farm in his latest upload :)

@dwee44 29 дней назад

That "adaptive layer" feature on Cura Can also help with this type of print when you have no choice

@muhammedgokcan22 Месяц назад

It’s the same with most CNC parts. The coding isn’t for creating a radius, it’s for creating microns of edges that form a curve.

@mitchellreece3711 Месяц назад

Adaptive layer heights is certainly worth mentioning here

@DRourkey Месяц назад

The very first solution is polish. I was gonna say sanding but idk how 3D printing would take to that. The point is you can smooth it out somehow after printing, and that should be the finishing step

@Lovin_NY93 Месяц назад

Your printer is tuned well. I need to learn how to print that good of quality

@GigaDavy91 Месяц назад

There is also the option of dynamic layer thickness, so you get the best of both worlds

@alexanderleoccruz1840 Месяц назад

The thumbnail looks like a premium slice of raw salmon

@HLM.12 Месяц назад

Definitely subscribing! Im taking engineering electives in highschool and we use Fusion 360 and this channel seems good!!

@slant3d Месяц назад

Welcome. Thank you

@ReggieTheCaracal Месяц назад

Remember. Circle is made out of infinite amount of points stacked together. Its pretty much perfectly visible here. Those spaces can be bigger or smaller

@jcorpuz9323 5 дней назад

Master Lego builders are every familiar with this when building spheres

@rudyrocks0187 Месяц назад

Actually did an analysis of this 3DP artifact effects on early drag crisis onset for bluff cylinders in college. Depending on operating speeds, layer height and angle at which the cylinder is printed could be optimized to decrease overall air resistance.

@Aplejam-808 Месяц назад

This music is makin my sleeper agent wake up

@Thats0neBadHatHarry Месяц назад

And if you went down to .1pm it would be even smoother. One thing a lot of people forget from math is that every line has an ‘infinite’ number of points. The more points we measure the smoother the line becomes. The current problem with 3D printing isn’t us humans but the limits of the machine.

@RelaxCreatorMary Месяц назад

Best solution is to light it afterwards to melt the outer layer smooth

@cybitner6159 Месяц назад

You can also melt it down alittle and smooth it out with some sandpaper

@eldermillennial8330 Месяц назад

Stairway to waterbear heaven.

@Broeckchen Месяц назад

*cackles in resin printing*

@Jaegerssen Месяц назад

I thought this was tuna in the thumbnail

@noeditbookreviews Месяц назад

When I was a kid playing Nintendo and super Nintendo, I always wondered how it would look if the pixels were arranged diagonally, rather than straight horizontal and vertical.

@lvjypanic Месяц назад

the Fusin clip at the end gave me nightmares lmao

@pincone7889 Месяц назад

I love layer lines the feel nice to touch when my mom prints things nice texture

@Thearnyy Месяц назад

I havent heard this song in YEARS omg this took me back

@Ashsarwono Час назад

I sell my designs on Etsy, and dealing with layer lines is incredibly time-consuming! Sanding is obvious, so I’ve started designing around this issue. Unfortunately, with my first and best-selling product, sanding is still unavoidable. 😭

@johnballard3403 Месяц назад

I've seen people even out layers with sandpaper too.

@arizeta3540 Месяц назад

Printing on the side creates better bonding between layer.Surface can sand off.

@aleshandsome3705 Месяц назад

Thanks for arriving at the logical conclusion that curved surfaces should be printed on it's side. I was Yelling for the Whole Length of the short until the conclusion 😂

@johnrox3554 Месяц назад

Sandpaper. It exists, and makes most 3D prints much better

@paulmanoha Месяц назад

That's due to interpolation in cartesian system, you could try cylindrical coordinate system to get a more aesthetic finish.

@JudahGilley 25 дней назад

You could cover your prints in Resin to make it very smooth.

@user-ve5fe9zv6w Месяц назад

you could use a heat gun to slightly melt the layer lines too

@Al-aabir Месяц назад

The teleportation intro is new to me.

@MmntoMorrisson Месяц назад

OMG GENIUS THANK YOU ❤

@PalpatinesPlumber Месяц назад

People before sandpaper was invented:

@ScrotN Месяц назад

I was originally thinking about making the parts a little bit thicker then we sand it down but I never actually thought about printing it on it’s side. I’ll try it out(once I get a 3D printer)

@Shteuf Месяц назад

Thanks I really needed someone to explain this to me.

@TylerRaber Месяц назад

Adaptive layer height helps too

@iSaac-kp5lk Месяц назад

A great way to visualize calculus

@Braindoner101 Месяц назад

My immediate thought: sand that sucker with sand paper or a sanding belt.

@11111653 Месяц назад

bro comes out of nowhere

@ktburger659 Месяц назад

Josh just lying on the ground at the end

@Cebbat_Games Месяц назад

I just used sandpaper. I forgot the grain, but I make a VR gunstock to aim, and the grips where rough and rigid so I just sandpapered them and now I can hold them alright

@jacobmendoza985 Месяц назад

They invented this magical new tool called sandpaper.

@daliasprints9798 2 месяца назад

I love the poor layer stacking right as you say "more consistent surface finish". 😂 If your printers have Z wobble or extruder hob eccentricity like that, you need to print diagonal to hide it.

@Healthandwealth9422 22 дня назад

Perfect to defend yourself against the secret service

@dragonriderabens9761 Месяц назад

Question: Why not sand it to a smooth finish after? I’d imagine it’s very possible

@Thomasklaassen82 Месяц назад

Print it at 45 degree angle with the with the sharp edge above

@raeorion Месяц назад

I imagine the second option seems like it would increase the print time by a lot. I see most people sand the pieces down after printing. I just wish there were more biodegradable filament options so whatever comes off your piece wasn't micro plastics 🥴

@brawndo8726 Месяц назад

you forgot dynamic layer height settings in slicers which automatically increase the resolution for curved surfaces.

@searbhreathach9762 Месяц назад

There is the same problem while working with Blender. If your Dynamic Topology is two big. This causes the vertices after the print to look funny. I guess if your trying to go for a low poly look.

@_rabbit_hole4911 Месяц назад

I saw some people use heat to melt the plastic a bit so it smooths out, dunno if that's something that works better or looks better than sanding but food for thought ig