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3D Printing with Servos (Video from 2021) - ClearPath Demo
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- Опубликовано: 27 фев 2023
- This is random footage from testing that I have done using Teknic ClearPath Servo motors back in 2021.
These servo worked great and were easy to install, the only downside to them is that even the higher resolution models may still create print artifacts on flat surfaces.
In this exact setup, you actually do not need the breakout board for the Duet 2 to boost the signal to 5v. The duet expansion slot does output 3.3v on its own, which the Clearpath motors do accept even though it is out of spec for the ClearPath motor, which is 5v-24v. It does work with the direct 3.3v connection. However, you still need some form of a breakout connector, as the Duet 2 expansion slot pins are very close together. The proper connecter is a 50 way IDC cable. You can then take the other end of the cable, cut and strip the wires, and plug them directly into the ClearPath motors. You can also run the Clearpath motors at 24v and get the same amount of power, but less RPM, so you can run them off of your printer power supply.
I have most of the parts to do this sitting at my desk at work 🙄 I should order the rest and put them together finally...this is probably one of the best servo printer videos I have seen yet. The rest are usually show-off shorts.
Since 5 Years i'm Waiting for these Servos to be used in 3D Printers. With an very good Heater it must be a Thunderstorm SpeedBenchy Run...
I used ClearPath steppers in my CNC build. Love em. Been wanting to know how well they'd work in a 3d printer and if they would indeed be silent. Future project I guess. =)
Very nice! Is it possible that you share your settings for the printer.cfg and the controller for the motors too?
even if your board doesnt output 5v signal say 3v like the octopus board im using with servos you can run your step/dir signals to the - port and run a constant 5v supply from a 5v header to the + step/dir say on a jmc or stepperonline motor. not sure about the clearpath also can't forget about adding the pulse width line into your klipper config to prevent any weird issues that resemble missed steps
Hey can you elaborate on the "pulse width line". I got integrated servo motors to work with Marlin, but moving to Klipper they don't seem to be behaving the same. Thanks
As always, an awesome video, thank you for pushing the boundaries and sharing it with the community. Could you share your initial impressions about using the servos - mainly if you think it's worth it in terms of money/hassle? I've always wondered why there aren't almost any companies using servos in 3d printers. I have a set of hybrid servo-steppers that I bought for my mpcnc build, but always wanted to try proper servo's on my large format 3d printer.
What servo stepper hybrids are there? And you use
I think the artifact that are still visible are from the belts and small pully bearings, facets from the STL (even with arc welder enabled) and the molted plastic consistency.
Awesome video. Did you tune all servos at the same time, or did you tune each one seperatly? I got a relatively strong wobble on x and y motion and currently try to figure out the problem.
I tuned each motor separately on my CoreXY. I clamped the Belt from the unused servo to lock the system in place.
Is this something you plan to revisit now that hot ends keep up?
I hope that you revisit Servos, not much good info on youtube now that Vez has gone back to steppers. I am finding Odrive to be a bit confusing as well.
Do u know id it Is possible to use those seevi with klipper and raspberry?
I'm also curious about the artifacts you indicate in the video description, what kind of artifacts?
I've been using Clearpaths on my laser cutter for years, to get the most out of them you have to perform manual tuning. The autotuning is fine but not perfect.
So what top speed and average speed were these examples printing? What cubic mm/sec was the hot end at? Amazing work, thanks for sharing
So quiet compared to steppers!!! Too bad these things are CRAZY expensive compared to steppers.
HE-VO HE-VO HE-VORT!!! best project, best community! I love my Hevort!!!
So awesome! Such great info
When you mention print artifacts on flat surfaces, are you referring to something similar to VFAs on stepper motors? Would you still recommend these over something like the LDO 2405?
I think he is referring to the ripple effect caused by the tooth profile on the belt. aka the clearpaths have more consistent movement than steppers making the artifact more prevalent. Nearly every printer that is extremely well-tuned will have this artifact, its a ripple that you cant feel, and barely see with the same pitch of the belt profile.
You say that the high resolution models create artifacts on flat surface.
I have these motors (2310s) and the same PSU. and they create waves. I feel I have tested everything. Your prints looks much better.
Can you share you duet Timings? (Taa:bb:cc:dd)?
I'm still using them because those wavy patterns still annoy me less then that super load NEMA mtoror chirping
Sorry for the delayed reply. Here are my tuning profiles for the ClearPaths: github.com/MirageC79/HevORT/tree/master/HD/ClearPath_Servos
And here is an example of my config file: github.com/MirageC79/HevORT/blob/master/firmware/klipper/printer_ClearPathDuet.cfg
Hope this helps
@@HevORT np. Thank you
I have the same problem with the wavy pattern. Did you find a solution? When I print slow I have more wave artifacts than printing fast.
@@seelyw.4818 I haven't removed them completely but check cables that they aren't near 230v power cables for interference. That helped a lot but still not completely gone
@jbergene Interesting. Thanks for the reply. I'm going to make some tests. Did you have the wave problem with your ballscrew printer?
Why is your aluminum profile back? Did you film this before you made the change tocarbon fibre?
This is very old footage that is simply assembled together to show the installation. I always wanted to do a full review and post the results under the MirageC channel but never got to it. So I just released this small video here.
Seems like it’s actually pretty hard to buy them in mainland Europe (the clearpaths i mean) so had to take leadshine 750W AC Servos. But hereto say i‘m doing a bit more than 3d printing.
Hello, I'm currently experimenting with the clearpath motors. Have you got the engines running regarding the M569 T parameters and tuning? I would be very grateful for an exchange.
I mainly ran them using Klipper. RRF had issues to keep up with the amount of steps per second. My M569 was: M569 P5 R0 T2:2:2:2 S0
You can get my servo tuning files here: github.com/MirageC79/HevORT/tree/master/HD/ClearPath_Servos
It looks amazing, but is printing at this speed even a good idea for getting a quality part? I would think that the layer adheasion would suck a lot.
Awesome! What top speeds did you manage to reach with the servos?
Theoretical max speed is 2100mm/s. But hotend was the major road block.
@@HevORT What are the artifacts on flat surfaces you were talking about caused by?
Sick
why do people have that heavy ass metal bar for the XY gantry?
I am using clearpath servos and they have a smoothing function that causes a tiny delay. If I use clearpath on one axis and stepper on the other, my small circles turn oval.
This causes an issue for extrusion because the servos are slower than the extruder stepper causing stringing due to early/late retraction.
I am wondering if there is a way to set a persistent fixed delay for the extruder so help sync the servo with the extruder stepper. Still not the best solution as the extruder will be slower during straight lines as the servo catches up.
I wish someone makes 3D printer controller that don't use STEP/DIR and have actual path planning.
Why would you want to mix motors for movement axes?
I wonder if you could use a negative pressure advance value. I imagine someone could write a script to run your code g code through to delay your extruder by so much, not a great band aid
@@mateijordache1952 I was doing some testing and switched one at a time. This delay also happens for 5-phase steppers from oriental motors as they also have a smoothing option on the driver.
Teknic doesn't make 3d printer specific servos. These are all for cnc machines that requires lot of torque.
Ive always wondered rather than a faster and faster head .... Split the build chamber into 4 and have 4 independent hot ends that overlap. Yeah the control could be more difficult to avoid collisions byt surely that would be faster right??
Thats just 4 3d printers but your design creates a lot of wasted space due to the fatness of a hotend
@@phoenix4193 the thickness from the offset is wasted true.... But each quadrant can be working on parts of the same layer simultaneously so loose 25mm but potentially faster
Print quality better with servos?
5:46
Silent printing.
Would it be possible to run 120v AC winch motors off an Octopus Max EZ board using DC to AC relays? Or some other way?
How is the vibration? 👀
Just fine ;) ruclips.net/video/h-ukClHtai4/видео.html
'Promo SM' 👉
I only see an unusable print lol