The Best Auto Bed Leveling Sensor BL Touch, 3D Touch, CR Touch, Strain Gauge or the Prusa SuperPINDA

In this video, I will test the five most common bed leveling sensors in the market for 3D printers. The first group will be the BLtouch and its variants, including the original BL touch, a super cheap knock off called the 3D touch, and another BLtouch style design from Creality, the CR touch. I won’t call it a knockoff yet as a knockoff is usually cheaper in terms of price and quality . We also have the non BL-touch group, including another sensor from Creality, the built-in strain gauge that came with the CR-6SE and the latest CR-10 Smart, and finally, the Prusa SuperPINDA, which is an inductive sensor.

I will compare them side by side and see which is the best auto bed leveling sensor for 3D printers.

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[MakerMeraki]

What a great and thorough review! I hope my infant daughter grows up to be like you! You have quickly become a trusted source for information for me on 3D printing and CNC, and I always look forward to your videos! Thank you to you and your brother for the great content!

[MrExo_D]

interesting results with CR touch, other reviews have mentioned that it outperformed the BLtouch

[MobileDecay]

This lady is a billion times smarter than I'll ever hope to be! 🤣

[MnemoHistory]

This was an incredibly useful and succinct review. Your efficient and precise use of time and information is impressive. Thank you.

[mxns]

Excellent testing, professionnel et approche scientifique, un nombre suffisant d’objet à tester pour être crédible ! Tu as tout d’un laboratoire dans ta façon de faire, continue, c’est génial ce que tu fais !
Même si je ne parle pas très bien l’anglais, tu es ce qui manque à tous ceux qui parlent d’imprimante 3D.
Bravo à toi et continue, tu es géniale !

[Ericd]

You and your brother are doing some of the best tech videos ever. To the point. Showing exactly the information needed. Very impressive. Please keep up your great work!!

[Auh]

Great video and pretty much the only one that compared all the popular probe types. One thing I'd mention though, by testing on different printers, it adds a ton of variables. Mainly that the accuracy of the Z axis greatly affects the accuracy of the probe.
I'd love to see a video where all the probes are tested on the same printer, but using different mounts ofc.

[davidboop]

I just hit play on this video. Her videos are always so great. I'm so glad it's not a review video. Please keep making videos like this and make videos setting up your favorite things

[DoubleD]

I would try a different CR Touch. I have one and it works great. I have seen similar tests by other trusty creators and they show a very different result. They showed the CR Touch ahead with far better scores. I think you just got a defective one. Not uncommon with any electronics.

[LuisJimenezr]

Girl you're awesome! Thank you for the video! Very well done.

[kamilsutkowski]

Finally a comparison video! Thank you!!!!

[jstro-hobbytech]

I look forward to your videos. Another great one. You and your brother are on to something here regarding 3d printing tech. I'm not sure what yet but I can't wait to see it.

[KennethScharf]

The CR touch may very well be a licensed copy, it actually looks like an improvement over the original and has been re-designed to work plug and play with the Ender series printers. bTW, I've seen other reviews of this where it actually worked BETTER than the BL touch, so you might want to get another one and try it again. Your's could be defective.
The PINDA inductive sensor looks like an improvement over the commonly available larger units, however there is nothing wrong with those when used with spring steel coated build surfaces.
Note that inductive sensors are available in both NO and NC PNP or NPN type switches. The NPN type can be run at 12 or 24 volt power with 5v logic switching while the PNP type are restricted to switch their output signal at the power supply voltage. Since these sensors perform best above 6v power, the NPN type is preferred. These switches are Open Collector. PNP switches will require a logic voltage level conversion. NO and NC sensors are both OK, but you will need to configure the software to use the kind you have.

[ChrisBurnes]

Super impressed at the work done here.
Very useful and thorough tests, presented in an amazingly concise and digestible format.

[GreenAppelPie]

Good scientific test methods by the way. This is very similar to the way I’ve professionally completed and documented instrument testing.

[majstor]

I like this better than Teaching Tech comparison review

[landroveraddict]

I really enjoy your videos. You deliver the content clearly and calmly. I hope you do not neglect your school work, this is more important than teaching your viewers. I am sure your parents keep that in mind. Children don't develop your level of confidence and intelligence without good parents as mentors. Well done to your and your parents. I look forward to your next video.

[apsmiki]

with a theme like this, I normally doze off after 2 minutes...but funny enough I was awake during the whole video. Again, Prusa shows us that quality in every detail leads to outstanding results. Your worst candidate was off by 10%. But 10% of 0.2mm is just 0.02mm. My bed screw has a pitch of 0.75mm per turn so to achieve the accuracy of your worst contender by hand I have to be accurate within... roughly 1/40 of a turn. You make me do difficult calculations, oh my god. But here is a challenge: The Strain Gauge is not very accurate as it does only one move to measure (I claim). Can you write G-code to make it move once till contact, then back off 0.1mm, and then measure again with just 10% of the speed? I think it would be crowned the KING. Thank you for this FAN-TAS-TIC video.

[jkhsdjkhfjkhh]

Yea, I wanted to say thank you too, your videos are great, I just got an MK3S+ and I watched your whole assembly video before building, big help. My latest issue is my prints keep turning to spaghetti at mid Z heights (seems to be around the same height). People say increase temp, but it's PLA at 215 C, so not sure how much higher I should go.

[andrelevesque]

Great job explaining your material. You're a natural presenter. Keep it up your channel will be a success, I have no doubts.