RE: Prusa Core One - Intial thoughts......
I'll likely upgrade my MK4S, and am thrilled that Prusa actually has that option! Does anyone know if improvements to the MK4S line will now stop? Will there be a MK4S+, MK5, etc..?
Or will there instead now be a Core One, Core One+, ... or do you think Prusa will continue to improve both lines (bed slinger and core xy)?
RE: Prusa Core One - Intial thoughts......
I am curious about how the "Active Temperature Control" works. It is mentioned in a couple places in the video.
The "vent" on top is obviously a MANUAL operation (i.e., manually engage when printing PLA and maybe PETG). But how is the desired temperature (to control the fans) set? It would be nice if it was via Gcode, but that would mean controlling the fans (or sending the target temp, perhaps via I2C, to some other module that monitors temp and controls the fans). But the I2C connection is needed for the HackerBoard, which is separately mentioned as still being an option.
Has anyone spotted anything in the videos or announcement post that tells how the desired chamber temp is SET for each print?
I suspect thru the slicer. In Prusa Slicer in the filament settings you are able to set chamber temps as well as minimum and maximum temperatures. This is my guess, but it would make sense.
I imagine there will be manual overrides from the control on the printer as well.
RE:
I suspect thru the slicer. In Prusa Slicer in the filament settings you are able to set chamber temps as well as minimum and maximum temperatures. This is my guess, but it would make sense. I imagine there will be manual overrides from the control on the printer as well.
That would be nice, and the "right" way to do it, but...
HOW would they do that? Temperature has to be "set" and then "monitored" with fans periodically adjusted. I doubt they will do all that in the printer firmware on the buddy board -- at least not on the existing board, as it would need additional hardware (more thermistor inputs, fan control outputs) that don't currently exist. Doing it from Gcode would either mean a new version of buddy board with more hardware, OR communication to send a "set point" to an external controller that actually monitors temp and controls fans. And the only communication channel available is the I2C, and that connector is used by the hacker board (though it could be extended).
I'm concerned they may make the chamber temperature control manual, via another controller (rather than via Gcode). I really want to see more detailed info on this feature.
RE: Prusa Core One - Intial thoughts......
In the Core One upgrade, I suspect only the MK4 Nextruder will be kept.
I cannot see any other parts that can be transferred.And the screen/display.....
Of course, the electronics and the display 😀
And the heated bed, the steel sheet, the NEMA motors.
RE: Prusa Core One - Intial thoughts......
The fact that Prusa have released an entirely new product architecture, and a kit to upgrade from the old architecture is absolutely to be commended and why I want to continue supporting Prusa.
But I have some misgivings - if they weren't beholden to this upgrade pathway (and there's undeniably significant cost saving for them in re-using a lot of already well proven componentry) would the Core be much different? I would have loved to see a tool changer setup instead of MMU. And a print volume that could compete with Bambu - I find the Mk4 a bit restrictive, and an increase in Z height alone is definitely not a gamechanger.
Personally I think upgrading from my Mk4 in the Prusa enclosure is a waste of money. I already achieve stable chamber temps of 43-45 degrees with just an incandescent light bulb!
If I was buying from scratch though it would be an easy choice.
RE:
I suspect thru the slicer. In Prusa Slicer in the filament settings you are able to set chamber temps as well as minimum and maximum temperatures. This is my guess, but it would make sense. I imagine there will be manual overrides from the control on the printer as well.
That would be nice, and the "right" way to do it, but...
HOW would they do that? Temperature has to be "set" and then "monitored" with fans periodically adjusted. I doubt they will do all that in the printer firmware on the buddy board -- at least not on the existing board, as it would need additional hardware (more thermistor inputs, fan control outputs) that don't currently exist. Doing it from Gcode would either mean a new version of buddy board with more hardware, OR communication to send a "set point" to an external controller that actually monitors temp and controls fans. And the only communication channel available is the I2C, and that connector is used by the hacker board (though it could be extended).
I'm concerned they may make the chamber temperature control manual, via another controller (rather than via Gcode). I really want to see more detailed info on this feature.
Ok the XL there is a temperature sensor on the print head, and a separate board that controls the enclosure fan, light etc. So maybe they'll do something similar here.
I can't imagine they would advertise it if it wasn't going to be capable of doing so. I guess we'll see.
RE: Prusa Core One - Intial thoughts......
I think the Core One is mainly to provide an upgrade path to the latest options for previous owners. I bet there will be a new printer later next year that is their mainstream flagship CoreXY printer. I’m guessing features like:
- 270 x 270 x 270 volume (3x3 9cm tiles instead of 4x4 in XL)
- Enclosed chamber
- Dual spool holders, side mount
- Two head tool changer
- Hardened nozzle (default)
The fact that Prusa have released an entirely new product architecture, and a kit to upgrade from the old architecture is absolutely to be commended and why I want to continue supporting Prusa.
But I have some misgivings - if they weren't beholden to this upgrade pathway (and there's undeniably significant cost saving for them in re-using a lot of already well proven componentry) would the Core be much different? I would have loved to see a tool changer setup instead of MMU. And a print volume that could compete with Bambu - I find the Mk4 a bit restrictive, and an increase in Z height alone is definitely not a gamechanger.
Personally I think upgrading from my Mk4 in the Prusa enclosure is a waste of money. I already achieve stable chamber temps of 43-45 degrees with just an incandescent light bulb!
If I was buying from scratch though it would be an easy choice.
RE: Prusa Core One - Intial thoughts......
I hope you're right - if they release that printer I'll buy one for sure.
RE: Prusa Core One - Intial thoughts......
Ok the XL there is a temperature sensor on the print head, and a separate board that controls the enclosure fan, light etc. So maybe they'll do something similar here.
I can't imagine they would advertise it if it wasn't going to be capable of doing so. I guess we'll see.
As they say, the "devil is in the details." They've advertised temperature control, but haven't said how it works -- so there's a lot of room for uncertainty there.
I certainly hope the temperature control is via a setpoint in the start Gcode, after which temperature is continuously monitored and adjusted during the print. That's what I have now (via temp probes, a Pi, and Octoprint scripts), so I'd like to see that capability "native" to this printer without adding additional hardware and software. But unless they've added another board connected via I2C, or updated the Buddy board with more components, I don't see how that can happen. I preordered a CoreOne anyway but will be waiting to see more details.
RE:
Core one thoughts. I ordered one... Christmas next year will be Core One upgrades for family members that have a MK4s. At a $499 U.S. upgrade, there should be a lot of parts that cross over.
What I think will be from the MK4s for upgrade, X, Y and Z servos. Even with 50mm more in Z, there is 50mm not used on Z rods because of the Z axis bearing I measure around 300mm on the MK4S Z lead screws. It uses 3 servos for Z on the Core One. Nextruder assembly, nozzles and cooling fan. Rods and bearings for Y. Heatbed and sheets. Only 10mm more in Y, 220mm and the sheets are 240mm in Y on the MK4s. The LCD Screen. The wifi module and NFC antenna. Power supply.
Most likely a new buddy board for the 3rd servo, case fans and case heat sensor.
Things I like
They mounted the fan in back so you can see the nozzle.
It's own enclosure.
Easily handle higher heat filaments.
Power supply and buddy board already outside.
MMU3 compatable with new MMU3 mount.
Improvements for the next decade... Mentioned in the conference interview.
What I wish some time soon ....02 or better resolution in X&Y vs. .08mm currently.
RE: Prusa Core One - Intial thoughts......
Interested to see ow the MMU3 will mount and how they intend for the spool setup to be - hopefully not as messy as it is now........
--> MK4 - MK4S - MINI+ - Accelerometer Guide - BambuLab A1 Combo <--