Voron Clone Destroys Itself - Sovol SV08 Quick Take
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- Опубликовано: 26 сен 2024
- Got this printer a few weeks ago and have been trying to make a video about it, but it suddenly stopped homing just as I got some time free to do some filming. Has anyone seen this issue before? I have an Eddy probe handy that I was excited to test, but it sounds like Eddy compatibility is low on Sovol's priority list. Sovol, if you can hear the sound of my 'voice', please bump it up.
Disappointed in myself for starting my RUclips presence with a millennial pause, but here we are
The fastest way to buy the SV08 right now if you're interested is most likely Amazon, on which it's often available with Prime shipping. You can find it at the following link, although at a premium: amzn.to/3WbBWwo (Amazon Aff.)
Thanks so much to everyone who commented - I think I figured it out! New video on the way.
what was it?
@@Voidroamer No spoilers!
@@Voidroamer Possibly that bed wasn't compatible with the probe. Wasnt triggering it.
Poke sovol to release a up-to-date klipper version so you can just use the Eddy Probe
I'm poking, I'm poking! Haha
Sensors that rely on an electro magnetic field are influenced by temperature. (resulting in variation in the height measurements when temperature fluctuates) I doubt if it's any better than a proximity, other than being able to scan faster. (it has a data output for height mapping so it's able to show a value other than on or off. A simple klicky probe might give a more predictable/stable result. (but not as fancy, i admit) but from a technical point of view, i take reliability over fancy. on my previous homebrew delta-printer with a mechanical switch as probe I had stable results.
@@berendlucasvanderweide you're right there's some influence from heat, but I've never heard of the magnetic field being so influenced that it stops a printer from being able to home at all. Heat soaking the probe before running bed mesh is all you usually need to do to account for any deviations in my experience. Now that I've taken the printhead apart, I don't think it's the sensor. Follow-up to come!
@@MaximalistWorkshop No, i don't mean that the heat is causing your issues. I mean that the magnetic sensor fluctuates and might not be accurate enough for proper bed height determination. Perhaps adding a PTC or other heater element to the proximity sensor (or mount it on piece of aluminium and hold it against the bed, but you kinda need to know the correct offset to do that) to use it heated every time. Heat soaking it with a bed based on some radiation in a non enclosed printer is not the way to go.
@@berendlucasvanderweide Got it - that all makes sense. Thanks for the info! I'll have to do some more research. Sounds like someone may have adapted the SV08 to use a Klicky probe.
Millennial pause beats 'Wait. Is it recording.. Am i recording?'
With a QUERY_PROBE you can get a status of the probe. It should report "triggered" or "open" and if you hold something of metal in front of the probe and perform another QUERY_PROBE, the status should change. Seems like your proximity sensor died or you have an interruption in either the power or the signal wires or the extra MCU on the printerhead isn't communicating properly with the mainboard. You didn't loose your magnet mounted cover tearing some wires by accident?
Hahaha - thanks, that makes me feel better. Nice to be in good company. I did as you say, and it seems like all of the wires are intact; I queried the probe a bunch, and it looks like it stays open when away from the bed and 'triggering' when close to the bed, but only when it's basically pressed against the plate. Running more diagnostics now. I really appreciate you pointing me in the right direction!
@@MaximalistWorkshop just went through the comments, noticed you used the original plate as well to test. Perhaps your nozzle is very low? According to the step file i have from the printer it should be 1mm below the air ducts. I would contact sovol over this matter with a link to this movie in the email. They respond quick. Perhaps the nozzle came apart or perhaps the inductive sensor is off. (You could probably loosen the screw and lower the sensor a few tenths of a mm.
@@berendlucasvanderweide Great minds! I think I got it. Update video to come.
I think i watched a guy that has a series on the SV08 and one of the first things he had to do was to configure the sensitivity of which it stops. I think there are no end-stops on the printer and it is depending just on the information from the motor drivers itself. Thus with sensorless homing you have the ability to lower or higher the sensitivity of "end-stopping action". You can change this in the klipper config.
Imo this could be the case because it is hitting the ends but does not trigger any actions but just continues as normal.
Thanks, Kali! Sensorless homing is fairly common in 3d printers these days, and it is reliable enough that it wouldn't cause this issue. Also, on the z-axis, the end-stop is virtual and is triggered by the leveling probe or the tension gauge, depending. The problem is a defect in the design of the nozzle. Please see my follow-up video here:
ruclips.net/video/-9t9fKq2_h0/видео.htmlsi=tG2elnFqOhueCtXv
Stay tuned for another update and more developments.
@@MaximalistWorkshop oh, yeah I already watched it and even shared it in FB :)
Thanks for the videos and ifno you provide
Check if probe is working, as far as I know it is inductive probe and those have led on them to let you know if it's triggered. Just poke it with some metal and see if it activates. Otherwise try adjusting it's hight so it's closer to bed
Thanks! It triggers, just not sensitive enough.
@@MaximalistWorkshop try lowering the probe if possible
@@mcstando Thanks! I believe I figured it out. Solution ended up being similar. New video to come!
Just tie the umbilical to the ptfe feed tube and it will keep it off the print surface. Maybe your Z offset is bellow the bed and the probe has to bounce up ?
Z-offset shouldn't impact whether the probe is triggered at all, should it? If it was a z-offset issue, the printhead would home normally and /then/ dig into the bed as it starts trying to compensate on the z-axis while printing. Even leveling should be normal in that case because ABL doesn't rely on z-offset during bed mesh calibration.
Seconded on the cable. It will fail much sooner just hanging loose or possibly get jammed up in the mechanism. Zip tie it in several places along the ptfe tube to constrain its movement
Mine has done this three times now. All while printing PETG. Known good models. After numerous successful prints. The nozzle/hotend is faulty.
Ugh - that's the worst. I'm really sorry to hear it, especially since the nozzles are so rare. I'm thinking about doing another follow-up video to make an even stronger statement about it, because I haven't seen anything from Sovol, and they really need to do something about this ASAP in my view. A warning would be helpful, at minimum, until they can find another fix.
It seems to be specifically with PETG with its specific properties as the nozzles arent screwed in they are press fit - evidently new nozzles have screws to avoid this happening.
100% should have been picked up in testing
@@francistaylor1822 Thanks! This is video 1 of 5. Updates covering the nozzle situation as it developed are in the playlist linked below, including information about the grub screw design and the newer threaded nozzles. Subscribe for more!
ruclips.net/p/PLy-yMMX_anU67Gcx8iQzcednl3BumfQjV
Do you have a link for the plates?
Sure thing! The West3d one that's on the printer is this
west3d.com/products/double-sided-texture-smooth-flex-plate-with-3m-magnetic-backing-energetic-west3d-collab?variant=41975465967828
The one that the machine chewed up is this; I found it was about 5 mm too small for the machine's bed, which looked weird but didn't impact performance.
www.amazon.com/gp/product/B0BRJ5F9ZB/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Do you have an IR temp probe handy? I'm guessing the bed isn't close to that temp.
I don’t. At a touch, it feels like 65 C to me. Why would bed temp be the issue?
@@MaximalistWorkshopit wouldn't.
@MaximalistWorkshop I was thinking about uneven thermal expansion with the bed warping as various parts heat up and expand differently..
Preheating the bed and giving the heat time to soak would verify if I'm on the money (spring steel, PCB, aluminium, ABS... oh my!).
I have an SV08 on order, and I REALLY don't want to crash it.
@@garethevans9789 thanks! Makes sense. That warping is a lot of what the sensor is meant to detect and account for with the bed mesh, though. I have a theory. Stay tuned! ^_^
@garethevans9789 I understood what ypu meant and that plays a part in zoffset but this is the probe not registering the bed at all. He probably needs a replacement probe.
@maximalistWorkshop I would look into the M12 probe mod if I were you.
Fixed!??
Yep!! I'm just putting the final touches on the follow-up video now. I'll link it here within the next hour or so.
Here'ya go! ruclips.net/video/-9t9fKq2_h0/видео.html&ab_channel=MaximalistWorkshop
Man, I've been itching to get an eddy probe for mine, but want to wait till someone braver than me does it.
Wouldn't the easiest way to check if the probe is doing anything be to remove the shroud and see if the red led comes on when it gets close to the bed?
Yep! Need Sovol to work on getting their firmware up-to-date. And yeah - it's a good point. The probe's light turns off when metal is placed close enough to the probe, but it doesn't seem to want to trigger until the plate is too close and there isn't enough clearance for the nozzle. So, the probe is working, but its sensitivity is dialed way down for some reason.
Is it an inductive, or eddy sensor probe?
inductive probe. Per the video, no eddy probe support on SV08 yet.
Just a suggestion, but try it with the original Sovol plate and see if it acts differently.
Tried it - thanks! Probe doesn’t trigger at the proper distance with any plate I have onhand.
And I thought my print room was messy...Still waiting on my shipping
thanks - this SV08 is in my home office while I move printers around. My print rooms are even worse! Here's hoping your Sovol arrives soon!!
It’s that smooth plate sadly, sensor won’t pickup the metal through its plastic layers.
Tried with several types of plates, including the stock PEI, all to the same result. The plate with a soft liner that was damaged was working for over a dozen prints before this issue manifested. The part I show in the vid was printed on it.
@@MaximalistWorkshop yeah apparently I’m just completely wrong cuz I just ran a smooth plate on my sv07 fine, (that was not the first week use experience) Hope you get a new sensor that works! Maybe sovol will send you some new beds while their at it. 😂💀
@DOSEDKID I initially thought the same thing but that plate is also spring steel so it should work the same as the stock plate.
If you put a metal tool or something near the probe does a light turn on or off?
Not that you should have to. But wont just like a fresh custom klipper install fix most of the issues people have. Maybe I just have experience with bad printers where the community has to create better firmware for the machine to run properly. But thats my plan get the sv08 wait for community to do better than the company then be happy. And yes I said wait, i can follow instructions but have no clue about the firmware crap.lol
If you're running a magnetic bed it creates Eddy currents you might have better luck with the probe on a glass bed with no magnet
You mean the Eddy probe? It’s not compatible with this printer’s current firmware. If you mean the induction probe, I haven’t had any issues which were caused by the use of a magnetic plate. Magnetic plate is standard for this machine, as is the induction probe.
My bad I thought you were talking about it having a beacon probe because that winds up reading buy magnetic induction in the heat causes a flux in the magnetic field when the bed is heated