All Prusa i3 Printers are on Revo now

All of the Prusa i3 mk3s+ printers (Apollo, Hermes, and Sunwukong) have now been upgraded to the E3D Revo hotend, from the stock E3D V6 hotend. Hermes and Sunwukong were upgraded Sept 5th, and Apollo on Sept. 27th. All Revo are equipped with hardened Obxidian nozzles- feel free to print CF, GF, Glow-in-the-dark, and other abrasive filaments!

What does this mean?

The Revo is a newer hotend design that combines the heatbreak and the nozzle in a single, factory-sealed piece. This means we should completely avoid having “Blobs of doom” that occur when the heatbreak and nozzle are not perfectly sealed (after replacing/re-seating the nozzle). It also makes it much easier to change the nozzles out for maintenance: at the moment, we do not have different-sized Revo nozzles or allow changing nozzles out for bigger/smaller-diameter nozzles, so please do not do this yourself. In addition, the heater block much smaller and covered in a silicone covering, which should reduce the possibility of filament getting stuck to the block and dragging around, causing it’s own form of a “blog of doom”. tl;dr: much less blobs of doom, much more reliability

Sunwukong and Hermes were upgraded a month ago and seem to be running very smoothly. Apollo was upgraded yesterday and it seems to have clogged due to a slight error during the upgrade- I came in today and I believe I’ve figured out the cause of the clog and remedied it.

You may noticed the printers will ask for a firmware upgrade- please ignore the firmware upgrade warning- we had to actually downgrade the firmware to get the Revo working due to a change in how it checks if it is heating up properly. There is a Revo-compatible version of the new firmware, but it did not seem to work properly, so we had to go down to version 3.12 in the meantime.

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Is there an E3D V6 left over that I could acquire? I run a Wham Bam Mutant V2 carriage and swap out hot ends, I could use another V6 for high temp material.

Sorry for the late reply- we just discussed this at a 3DP stewards meeting and we’re happy to give away the old V6’s- are you still interested in this?

Amazing. I just ordered a Revo hotend for my personal MK3s+, and was going to post my gory blob pictures from this weekend. Happy to have my decision validated here as well.

Extra thanks for the firmware tip - you probably just saved me a couple hours troubleshooting when my hotend arrives this week!

Hope you love it as much as I do! Has to be my 2nd favorite 3DP mod only behind adding auto-leveling (back when printers didn’t come with that by default :stuck_out_tongue: )

Yes if I could have one that would be great.

I’ll have one set aside for you in the next couple days, I’ll let you know when its ready.

Uploading: IMG_1711.jpeg…
@michael your V6 is ready in the Up For Grabs shelf

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Found it. Thanks

I forgot to mention, and edited the original post, all Revos have Obxidian abrasives-friendly nozzles, so feel free to print carbon fiber, glass fiber, glow-in-the-dark, and other abrasive filaments.

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Thought I’d update you on what worked for me updating to Revo WITH the latest firmware 3.14.0.

Initially, install went well, upgraded to latest REVO firmware, then ran into thermal model errors immediately. Then, I followed this guide: E3D REVO Thermal Model · Issue #4451 · prusa3d/Prusa-Firmware · GitHub

  1. Install latest REVO firmware.
  2. Run the reset_revo.gcode file shared there. (This updates thermal model variables to a reasonable baseline for the REVO hotend.)
  3. Run TM calibration. This should succeed without thermal model failures now!
  4. Run PID tuning. This should also succeed.
  5. Dial in Z height for the new hotend, and…
  6. Print!

So far 3.14.0 has worked just fine - however I’ve only done some shorter prints. There are anecdotal reports of longer prints failing in some way.

There are two complications I can think of that would make my results different from those on the 3 at asmbly: the hardened nozzle (usually requires a temperature bump), and my different fan duct, as mine was somewhat worse for wear after my blob problem: #0017 [Remix] X2 Delta P Duct [V2R2.2] for the MK3S(+) [New Flow Splitter] by BuildX | Download free STL model | Printables.com