Eddy for SV08 without mainline hassle

Eddy will not fix a taco bed. Ok it may allow for hills and valleys

I don’t lament the lack of use of my SV08. I’ve been printing anything I need to print on my Zero and have been very happy with it. I do have a couple of larger items to print, but it’s not an immediate need. It will be nice to have my large format printer back for the few large parts I want to print.

I have mildly lamented that Sovol tried a little too hard to cost reduce the Voron 2.4 and that compromised the critical first layer, but I mostly chalk that up to good intentions and Sovol learning what’s important and what provides good value for customers. From all indications, they corrected this in the Zero and SV08 Max, and will soon release the upgraded SV08 with a flat bed and Eddy sensor, which should be a great printer.

Eddy is half of the solution. A flat non-warping bed, either after market, or as part of the upgraded SV08, is the other half of the solution.

The Eddy will fix SV08 first layer issues by reliably producing an accurate bed mesh that allows Klipper to compensate for a warped bed. The parts would then stick to the bed but would be warped on that side. I wanted the complete solution that not only allows parts to reliably stick to the bed, but also would produce flat bottomed parts with accurate dimensions, so I opted for a flat bed upgrade in addition to the Eddy sensor upgrade.

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How eddy without full mainline klipper

Sovol’s version of Klipper supports the Eddy sensor - on the Zero, on the SV08 Max, and soon, on the SV08.

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Hope so soon, I think taco bed maybe because of the inductive probe

I cant understand why Sovol just dident replace the hole toolhead with the one from the Zero. To me it makes more sense?

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The SV08 uses USB to communicate to the tool head. The Zero and SV08 Max use CANbus. To remain compatible with the SV08 motherboard, Sovol kept the USB tool head and swapped the prox sensor for an Eddy probe. It wouldn’t have been that expensive to add a USB to CANbus adapter at the motherboard to use a CANbus tool head but that would have added a bit more complexity to the upgrade.

I assume the USB tool head upgrade will require the SV08 to be powered down, all of the connectors unplugged from the old tool head, the old tool head removed from the gantry, the new tool head installed on the gantry, the connectors plugged into the new tool head, the SV08 powered, and a firmware upgrade to use the new Eddy probe.

Firmware revision management for the SV08 could become complicated. If the upgraded SV08 currently under development uses a CANbus tool head like the Zero and SV08 Max, there could be three versions of SV08 firmware for three types of hardware:

Original SV08 with USB tool head and prox sensor
Original SV08 with USB Eddy tool head upgrade
Upgraded version of the SV08 with a CANbus tool head

That’s a good reason to call the upgraded SV08 currently under development something like the SV08 Ace, so it’ll be less confusing which printer someone has when contacting tech support or getting OTA firmware updates.

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It really isn’t just because of the inductive probe. I replaced the stock probe with an M12 probe, which just made it a more accurate (and still slow) taco mesh. I then upgraded to the Eddy Duo with mainline and eddy-ng; this solved the z-offset issues, but still with a taco bed. Then I shimmed the bed and got it down to 0.13mm variance, but it was very bumpy.

Then I replaced the bed with the R3men graphite bed, and I’m at ~0.19mm variance, but smooth across the whole bed.

You need to replace (or mod) the bed and the sensor to fix all of the issues.

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Maybe loose bearings on the gantry or distorted gantry on the SV08

I am using a R3 graphite build plate, said to be extremely flat. Although it prints well.

The height map show about 0.7 range, about 3/4mm. So what gives

Oh, sorry - I didn’t realise you were using the graphite bed (my bad, I obviously misread it). Then yes…if you’re still using the stock probe, it’s pretty likely that’s the problem. At the very least, upgrade to the M12 probe you can get on Amazon - it’s as accurate as the Eddy (maybe even slightly more so), just not as fast.

I still get a bit of taco-ness with the R3 bed, but down at the 0.17-0.19mm range it’s acceptable.

WmI still say that the replacment toolhead for the Sv08 should be the one used on the Zero. This toolhead has proven its self on the Zero for more than six month’s now. Why bring out another toolhead for the Sv08 that is more or les the same as the older one? I think its a ridiculous move by Sovol, wouldent you feel like you have made the perfect choices if the Zero toolhead was the ugrade choice, atlease the hotend is an upgrade thordes the oem one that isent gootmd even with the gardened steel nozel. When I changed over to the Microswiss Swiss one the printer was transformed. Acording to owner’s of the Zero they say the hotend is a good one? Please Sovol retink your choice on the upgrade.

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Don’t forget some SV08 owners (10%??) have constant communication issues with the USB toolhead. It seems to me Solvol made a poor decision.

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I totally agree, to make the decision to upgrade the sv08 by only adding a new probe and deciding to keep the original wiring harness and hot end is a big mistake. I follow sv08 owners on forums and sedit and lots of them report problems with their toolhead boards loosing connection with the motherboard. I have experience this myself meny times and Sovol in all fairness has replaced the toolhead boards and cables for me this hase cured the problem but only to return again alittle down the road. Why if the Zero toolhead doesn’t suffer with this problem would the chouse to use the old sv08 setup? It makes no sense to me a tall. To me the most logical thing would be to reduce the number of different parts used between their printers as this ultimately meens less expense and easier to controal their stores stock.
What do you think?

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I’m experiencing that same issue with not only the Sovol SV08, but also the SV06 Ace. Impossible to trust either on a long multi day print without the damn MCU connection lost error forcing a shutdown. Out of 17 printers only the Sovol units are unreliable. I don’t hesitate to throw a 96 hour print job at my Kobra 3 Max, but the Sovols are just a place to store prints. Sovol needs to get off their butts to correct the problem and issue a proper retrofit like Bambu Lab did with the issue they had with the A1. As for me I’m done with Sovol and would never buy another printer from them again.

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Well I know how you feel but I think you are a little harsh on Sovol. I have ordered the new Max and I am hoping that it will exceed my expectations. In all farness Sovol been very good in trying to resolve the problems I have experienced with my two SV08’s but I truly wish that they would learn by their past mistakes with the original SV08. They reily should think on this little forther before they release the new u upgrades printer, if they dont it will only couse futher aggravation to noth just their customers but to their hole workeforce and ultimately will effect their company and their name in the industry.

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