Understand WHY 3D prints WARP - Simple explanation with experiment!

Let me explain you with a simple experiment why 3D prints warp!

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[DESERTFOX]

well, that was a good explanation but at 1 1/2 min long why not just explain how to prevent it?

[id]

There you go - this is why 3d prints warp.😀
How you can prevent this is a topic for another video.🙁

[roadstar]

Great... but you never made a video on how to prevent warping... at least i was not able to find it if you did..

[tlmoller]

Please keep in mind that the lower layers of PLA are very stiff shortly after being printed. So if you can ensure good adhesion of the first layers it will be greatly reduced. And not to print to fast so the lower layer has less time to cool.

[anthonymorford]

Did you make a video with the solution to this?

[fancytableshoes]

This is a nice intuitive explanation! My efforts usually inslude lots of hand gestures and sound effects - I'll try this next time! Once you understand the mechanism of part warp (differential cooling), the fix is obvious (avoid temperature gradients).
There's no shortage of videos explaining 'how' to address the prablem. Kudos for a concise vid that addresses 'why' it exists!

[warpix]

Great explanation, but is there a follow up to this?

[laharlk]

Hey you missed another cause. If you print at low temps say near the melting point of the plastic, say 195*C for pla, it is still quite elastic for instead of melting and taking a new form it just stretches and sticks to the lower layer increasing the internal stress on the part.
Give it a try. Grab a pice of filament and a heatgun and heat it up until it starts softening and then stretch it and cool it down. It will stay in that shape but if you heat it up again it will go back to its old shape like heatshrink.
If you do that again but heat it higher when you reheat it wont go back it will just soften

[gggg]

The explanation is great, but can you please add a link to your video that helps address the issue?

[ChrisFuchser]

Excellent visual. Much better than a text description of the phenomenon. Gives us an intuitive feel for what is going on and why prints always curl upwards, never downwards.

[bobd.]

Good example of warping, but why no link to the hinted at video ( 01:10 ) that explains how to deal with the problem?

Your vids are usually thorough and very informative.

This one leaves me hanging and thinking; "Where's the beef !".

[dommoo]

Cool i got clickbaited i thought you were also going to explain how to prevent it in this video thank you for wanting my time with information i understand from the context of what it hapining

[jdgregson]

Thanks for the information. Now I'm off to find the information I am look for, which is a topic for another video.

[jazzyjoe]

Check your hot beds from the bottom. The heater element wires don't always cover the entire surface of the hot bed, e.g. between the four adjustment screws.

[SpotterSky]

Hi CNC
NIce demo and explanation of warping . Thanks :)

[hardgore]

i found 2 solutions first one get enclosure to keep it hot with reduce fan speed another solution is set up the fan speed to keep it cool. wrap happens by temperature difference. i keep it hot when printing ABS. but PLA can print without bed heating. too much fan speed can cause layer delamination especially with cheap quality filament so set up fan speed well to barely not wrap

[keachbarry]

my pla warps on the top layers, especially 90 degree layers make the edges curl upwards and ruins the print later in the process. i lowered the extrusion temp and increased fan speed and found that if you set the extruded part quickly by cooling it you can minimize the warping. for bed adhesion you will want to increase temperature to keep the pla sticking to the bed. i never tested on anything other than pla.

[seelyw.]

Three ways to reduce it:

- Brims
- use a (Heated) Enclosure, (if you dont have a heated enclosure just heat your bed for a few minutes before starting the print)
- wait a few layers to start the part cooling fan (maybe the 3rd layer)

[multimargejta]

I was thinking of adding the hot air soldering stick to heat the ABS (or any filament that warps) while printing.

[calvin]

A very creative way of explaining this phenomenon. Well done.