Adjusting the belt tension on the Original Prusa MK4 - Belt Tuner App
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- เผยแพร่เมื่อ 20 ส.ค. 2023
- Belt Tuner App - belt.connect.prusa3d.com/
More information about adjusting the belt tension on your MK4: help.prusa3d.com/article/adju... - วิทยาศาสตร์และเทคโนโลยี
Very Cool. I hope Mini and MK3S+ frequencies are added soon.
For the mk3 just use the mk4.
@@stan110 Since the MK4 has larger rods, and different hardware, the resonance frequencies may be different and the tolerance may be altered. Maybe I am overthinking it, but I did not see Prusa say that in the release and figured they would have if they were the same.
Mini and MK3S is added! :)
@@Michi_84nice, just tried it and both my mini belts are just a tiny bit too loose.
The feature is so great.
With the MK3S it took me longer to tighten the belt properly. Now take the printed Tension Meter from the MK3S and adjust the belt roughly. And then check again with the app. So far it has always worked! :)
I used this and it's amazing. Thanks Prusa team for this amazing tool.
Thank you. Will make my life easier when the Kit arrives. =)
Ooo, there's a screw to adjust the X axis now! Great!
Have to say, after hearing how there should be easy tension systems on the MK4, this looks very straightforward actually. Nice!
Really great idea! I've discovered this concept with GATES, as they offer an app that does this for ebike belt tensioning. Very useful!
@prusa - This is exactly why I bought a Prusa Mk4 after 3 China Printers. I want to print - not screw around and repair all the time. Great feature and idea
absolutely
Ender 3 V2 owner here .. I'm starting to think the same way
I had 2 artillery printers. One genius and one x3 plus. Both trash. Now I love my mk4.
Great to see this! Added to my regular maintenance routine for my MK4.
Can you share your maintenance routine ?
Can’t wait to see this for the other printers too!
my machine needs belt adjustment and boom! I saw this video appear this morning! thanks - great idea and I'm going to do it right away.
This is really helpful and so simple! Thanks 👍🏼😁
This is what I love about Prusa. You are always coming up with innovative ideas.
This is well known concept among 3D printer communities like VZbot. So Prusa didn't come with something innovative, just took already existing concept to finally make the belt tuning easier for users.
@@Loweec this method is an industry standard for belt tensioning in general, so not specifically something that was born in the 3D printing community, but nevertheless a great addition to minimize the guesswork that was typically needed before
@@apefredThat can be true sure. My point was more about Prusa not comming up with it but more like finally implementing somethig that is already used for this.
It's not inovative it's just something that's known to the most of the users that are trying to achieve high speed printing, but Prusa just did it more "user friendly" way.
Surely you're trolling. The only innovation prusa ever had was the heated bed design (the design not the idea).
That’s super cool! I’ll have to check my belts on my MINI+
It would have saved me some time if Prusa had simply published the ideal frequencies for X and Y belts, since there are many devices that can measure audio frequencies, including human ear, which can discern very small differences in tones. Thanks to this video however, I managed to conclude that the ideal (or at least acceptable) freqs are 83Hz for X and 96Hz for Y. To tune my belts, I opened an online audio frequency generator and played tones at those freqs and tuned my belts by ear to match. Then for my first print on my MK4, I printed the Rocket Motor from the Prusa USB stick, turning the speed up to 150% after the first layer and it came out perfect.
Edit: Online chat with Prusa support revealed the ideal frequencies. These values are the center values in the acceptable range, which they said was +/-10 to 15% .
MK4: X 87.5, Y 95
MK3S: X 100, Y 120
MINI: X 110, Y 110
This works really well!
What a brilliant idea! 😎
This feature is great! I wish I had this when I first built my printer. :)
I had the same issue as several other folks with the x-axis reading "too tight" and figured out the problem: my belt was actually sufficiently *loose* that the frequency being picked up was incorrect. It was reading around 145hz, but tightening the belt about a half-turn or so brought it down to about 88hz, which the app says is in range, and I concur from my past experience setting belt tension on my MK3. It also feels similar to the Y-axis tension that the app reads as being in range (90hz) as well.
Great topic, thanks 👍
When will the MK3S+ be supported by this belt app?
Just say it is a mk4 and tune to 90hz
@@dougshellusn thanks, will try that
I can now confirm that the belt tuning app works also with MK3S+. Just choose MK4 in the app.
Don't forget to calibrate z-offset after the tension has been altered.
amazing idea
Please add the Mini too! ❤❤❤❤
They added the mini
It is awesome!!! Thank you a lot!
Good work! The best solution though would be the printer calibration procedure used the built-in accelerometer to detect belt tension and ask the user to turn a certain screw an exact number of turns ;-)
Oh damn this is a great way to do it. If only they had something like this for the ender 3...
Viva la Prusa . The best E.U 3 D Printer Company .
On my printer I discovered that tapping the belt with something hard (like a pen or the Allen key you are using to tension) made a purer note that gets caught better by the apps
Great idea!
Just tried this on my MK3S, worked great. I went from X=71 to X=82 and Y=119 to Y=86...
While this is probably in the right direction, my 2 issues is 1) I like the visual feedback of the 3D printed belt tension meter since as I adjust, I can see if I'm getting better or worse. It's easier for me then flicking a belt. 2) there is basically no spot in my house that is quiet enough for this. I turned on the app and it said I was at something like 140hz before I even did anything. I haven't been told my mic sounds weird, so I can probably knock out it's my mic.
Also, would be good to have this for MK3S+ and Mini+ given they are still sold.
This works amazingly well, thank you prusa! (Take your phone case off otherwise it will not work!) 👍
My Motorola Edge 20 Pro didn't seem to work with this app.
When I built my MK4 and strummed the very loose (almost floppy) belt, it still showed 120+ Hz and said "too tight". And continued to show around the same value when tightening the belt.
I used the printed belt gauge instead and that seemed more reliable to me.
I just tried the app again after using the printed gauge. When strumming it a few times it shows 130+ Hz, and then all of a sudden it fell down to 66Hz.
This was my experience as well with 2 different phones.
Any plans to backport the app to your other 3D printers? Would love one for the mini(+) and I can imagine MK3S folks would be happy with this too :D
Mk3s just tune to 90hz
Just calculate proper frequency using the length of the belt that is resonating "free" like a guitar string. i..e. length where it doesn't touch anything. Then you can use any spectrometer app to find calculated frequency.
benchtopmachineshop.blogspot.com/2019/04/printer-belt-tension.html
They backported it to the mini
@@merseyless yeah i saw :D
This is the way the Bear upgrade did it 2 years ago!
This is the HOTTEST S**T EVER! I was worrying that - being German - I overtightened everything on my Mk3S+. But this helped alot. And it is so simple...and logical! Now, if you could build on that for linear bearing rattling, so see if grease is needed, that would be wunderbar. 😙
cool idea ✌
When will the mini be featured?
Please add this for prusa mini + please
Brilliant
I have not yet had the time to check out the app, but i would LOVE a kind of "free" mode where you just get shown the frequency, for other printers.
the app will work for other printers, but you'd have to get the proper tension from either the supplier, or crowd-sourced
Tapping the button to allow access to the microphone work for me, so I had to strain hear the ideal tension under the music on the video.
Will you add this for mk3s+?
Genius!
will it also come for the other models like mini+ etc.?
I have two questions. First, will this work with my existing MK3S+? Second, it's now 2/3 of the way through August. When will the MMU2->MMU3 upgrade be released?
Brilliant :)
I can't find the app link on the page you indicate
Dont forget the mini!!
I assume you're using the length to calculate the required frequency. Could you also add "custom" for modded and custom printers?
I was just about to comment that the app should be named something like "Belt Tuner", then I saw the description. Nevermind.
Genuins!
MK3S 🤞🏻
Can I use this for some of the belts on the Ender 3 S1 Pro?
When I did it for my mk4 it was always reading the first *overtone* (twice the frequency) versus a guitar tuner that I know is accurate. I ended up just using the PETG printed tension guide.
Edit: originally said harmonic, but meant overtone
The first harmonic is the lowest. Perhaps you were getting the second harmonic
@@DavidMacken oof yeah I meant "first overtone" aka 2nd harmonic.
Will you be adding more printers like the Mini+ and the Mk3s?
Thx.
Does the app do the mini too?
Is it working for the mini too???
Very cool, but is it possible that more printers are added in the future? Maybe even non-Prusa printers?
Amazing 😂😂😂😂
I've always wondered this but, why isn't the tensioning mechanism for the bed on the front? Seems so simple, or isn't it possible etc?
I have to undo my by now, oldschool lack enclosure ( think its v1) just so i can look at the bottom of my printer.
My original MK3 is still chooching, thinking of finally upgrading to S+ 😜 (just for fun not that it's really necessary)
I adjusted the belts on my mk3s perfectly "just right", 100-105hz for X-axis and 125-130hz for Y-axis. There was some weird layer shifting which drove me crazy for couple of hours untill I loosened both belts little bit to about 85-90hz/110-115hz and it has been fine afterwards. Perhaps the numbers are set a bit too high for the mk3s?
Nice. This is a far cheaper method than the gates sonic tension meter i have.
Do you have a version for the mini?
👍 is there a chance for Mini? Okay now it's time for Prusa the Band!! Jamsession with 3d Printers.
Can we use the MK4 version for a MK3?
What is the freuency for the Mini ?
I think this needs work. I tried using it for my mk4 and no matter how loose the belt was it was still at registering as "to tight" even though there was nothing to strum. I even made sure to turn off anything that could be interfering with my phone capturing the sound such as a fan or other electronic hum but even in a quiet room it would always register as the belt being to tight. I really like that Prusa is trying to make their builds as easy as possible and this, while it is a great concept, didn't work for me personally at the moment of this review so I had to tension the belt the old fashioned way.
for anyone else having this problem, putting the phone on the rod, and GENTLY strumming was the key for me... i think something like the other person said about it hearingthe second harmonic, so it's reading too high
also, strumming to hard makes it bump the plastic and messes up the reading... once i got it close to the proper tension and gently strummed the app worked great
I had this issue as well and it turned out I needed to tighten the belt a bit before the measurement was reading accurately. I think at some level of looseness the frequency just isn't consistent enough and it winds up reading too high.
@@coreyward I will give that a try now that the belts have some tension and see if the reading changes. I tried a few different times and it always said to high so I just had to tension the old fashioned way. It is printing really good now so I am not worried about the belts tension but I am curious to see if that was it.
It was hard to struck the belt hard enough to register in the app, while not hitting the edge of the X holder with it. A bit more clearence around the belt would help.
Hi Honza. Thanks for your feedback. We will take it into consideration.
Have a nice week!
Please add MK3S+ support to this!
Can we have for the mini + please.
Can you make a mk3 version please
will this work on non cura printers?
I had a lot of trouble getting this working on my Pixel 7 pro. Lots of bad results. Same problem with my old Galaxy S7.
I did eventually get good results out of it, but if I didn't have a decent idea of how tight the belts are supposed to be to begin with, it could have been impossible.
Hopefully you can do something to get better support for these phones.
No problem on Pixel 7 Pro for me.
Works very poorly on Galaxy Fold 4. The reading is all over the place. Not consistent nor reliable, unfortunately
I am using pixel 6 pro. The app works fine in Firefox. I struggled a lot in chrome
Please add the MK3S+
IL y a toujours se Mintemps instable sur la MK 4 ?
can we have this for the other prusa printers like the mini?
You can use this method on any printer you want. Just won't have the red-green scale according to that printer
No MK3S?
Is it normal that the top half of the belt is tighter tensioned than the bottom?
The top part of the belt is captive in the x-carriage, so it it effectively shorter. The tension is the same, but the increased length of the bottom makes the frequency lower.
I noticed tightening the three x-motor screws altered the tension. For me, it was better to tighten those before testing my adjustments, otherwise my end results did not match.
Is there also a Prusa Mini option in the app?
would this work for other tipe of belt driven 3d printers as a rough estimate at least?
The frequency will vary based on the length of belt between each idler or pulley so its fairly specific to each model. The Voron team have been using this method for a while by setting a distance between idlers.
Anyone know good frequencies for the Mini? 😊
Mine didn’t work either until I took my phone case off, then it worked perfectly. I would add that to the gideo
Im sure it works okay for most but for my noisey space it did not work
I love it! Does it work even for MK3?
So far just with MK4, but we might add more profiles even for other printers later 🙂
Please do a true app for Android store
@@Prusa3Dplease. That would help on my little farm. I need this for my Minis and MK3S.
@@IceCreams62why?
@@Prusa3Dplease do
Awesome but why did it take so long for anyone to do this?
nice... I need profile for my mk3s too :D I want to know if my printer has peak performance :)
I could not get this working properly using my cell phone (S23). Measurements sometimes did not update at all, were just jumping around between max to min and back and so on No useful feedback possible. However, using a computer and positioning the headset mic did work then!
Hi Mael. Thanks for the feedback about how the tension app works on your phone. I have forwarded internally. We are aware the app is having problems with a few phone models, but working on making it work on all of them.
I am have to know you managed with the computer, and a mic.
Any reason why this does not work on an MK3S+?
It does, just tune to 90hz
Why is it still so awkward to tension the belts? Others have shown how it can be done better. Especially with the Y-axis.
A co takhle MK3S, nebo už je EOL ? Obecně bych uvítal aplikaci přímo do mobilu. Vždyť je prusa connect, prusa link manuály atd....
Should my MK3 belts have similar tension as MK4?
I am also curious about this until I upgrade to the MK4
Ive always seen people recommend 90hz for mk3
on the mk4 u made tensioning the belt too complicated i made a dozen micro adjustment's still failure to the 2 adjustment screws did nothing to get the rite sound and even the belt on the back failure to get rite.......couldn't u put a 0 - (XXX)_________ belt .... tensioner on the side to adjust kinda like the front ????
Y-axis isn’t easy, if you have it in the enclosure with the control panel outside. Have to figure out how to do that without disassembling everything.
Прикольно )
It doesn't work for me at all.
What works is taking the 85Hz for the X axis and 95Hz for the Y values and measuring them in something like BeltTensionMeter app for android. Very precise and fast.
Very clever use of cell phone. I wish someone would come up with a similar tool for adjusting bandsaw blade tension.
Snapped my X stepper arm while tightening using this app -___-
Add mk3s