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 <--
RE: Prusa Core One - Intial thoughts......
Are you serious?
You want Prusa to pay you for your assembly of the printer!! If they suggested to return it for a full refund to invest in the Core One, that is the way to go (if you really want the Core One).
Downside is that you will be out of a printer for a minimum of 5 months, likely more looking at the history of new releases.
RE:
Surprise announcement. Obviously avoiding the 'Osborne Effect', in a well-timed business strategy, assuming the shipping date (Jan 2025) is realistic.
The price point is amazingly good for such a machine. Actually a lower price point than I paid for the Mk3S, if the additional enclosure from 3d Upfitters is added in.
On 'another network' I read that Bambu has recently reduced the price of a similar machine from above the CORE One price point to below it.
Build volume is fair. Same X as Mk3 series. 10mm greater for Y. Significantly more for Z.
Only problem is that I don't need another printer. I'm well settled in to using the Prusa (Mk3S/MMU2s) for smaller and quicker prints and the Ultimaker S5 for larger prints and/or those needing soluble support material. S5 is, in general, slower than the Mk3S but when soluble support is added to the mix, the Ultimaker is much quicker.
Had this one been out when I was in the market for a first printer, I would have most likely gone with it.
RE: Prusa Core One - Intial thoughts......
Had both MMu2 and MMU3, not a single print failure yet on my MMU3. Just works 🙂 And I had my share of failures on the MMU2 as well, even though I managed to get it working quit stable in the end.
RE: Prusa Core One - Intial thoughts......
How do you envision the MMU3 to be with the Core One?
Something similar to the AMS system by BambuLab, ie, a box that sits above the printer to contain the spools?
Or a 'free for all' like the current version where you place the spools as and where you can?
I wonder where the actual MMU3 and buffer will mount ie, above and outside the enclosure, or is there space inside?
--> MK4 - MK4S - MINI+ - Accelerometer Guide - BambuLab A1 Combo <--
RE: Prusa Core One - Intial thoughts......
This is long overdue. Good for Prusa to release a core XY that they've been using in their print farm, so they should have initial bugs shaken out. My only concern is that they used a terrible platform for the communication system in their XL/MK4. Zero on-board ram so you need to use the USB drive as a buffer (unforgivable) , a $5 wireless module that is different from their wired ethernet system on the buddy board. Wish they had bitten the bullet and put in a Pi subsystem similar to what I run OctoPrint on so that it would have lots of untapped horsepower for future development. Wonder if the Core One uses the same system as the XL/MK4.
All I have to go by is the Prusa video, but in the quick shot of accessing the NFC feature (appears to be the same as the MK4S), the electronics box and placement of the NFC antenna looks the same as the MK4S. My guess would be the same xBuddy board as the MK4(S), probably with CORE One added to the hardware settings to change the kinematics (and other features) mode. Unfortunately, with the NFC antenna on the back of the CORE One (hidden even more than on the MK4S), I really don't see NFC being used much more than doing setup activities. Just too awkward a placement for regular use.
See my (limited) designs on:
Printables - https://www.printables.com/@Sembazuru
Thingiverse - https://www.thingiverse.com/Sembazuru/designs
RE: Prusa Core One - Intial thoughts......
How do you envision the MMU3 to be with the Core One?
Something similar to the AMS system by BambuLab, ie, a box that sits above the printer to contain the spools?
Or a 'free for all' like the current version where you place the spools as and where you can?
I wonder where the actual MMU3 and buffer will mount ie, above and outside the enclosure, or is there space inside?
The announcement video does have one quick shot of the MMU3 mounted to the top of the CORE One. I didn't see any buffer, but maybe I missed it.
The buffer and spool holder solution might need to be a 3rd party product or opensource project (for 3rd parties to sell as kits/assembiles). I imagine some sort of sensor on each filament. When it senses more than a centimeter or so of back-feed on the filament, it would trigger a motor to roll the spool backwards to take up slack.
See my (limited) designs on:
Printables - https://www.printables.com/@Sembazuru
Thingiverse - https://www.thingiverse.com/Sembazuru/designs
RE: Prusa Core One - Intial thoughts......
Ah I didn't see that bit in the video - maybe I didn't watch close enough!
How do you envision the MMU3 to be with the Core One?
Something similar to the AMS system by BambuLab, ie, a box that sits above the printer to contain the spools?
Or a 'free for all' like the current version where you place the spools as and where you can?
I wonder where the actual MMU3 and buffer will mount ie, above and outside the enclosure, or is there space inside?
The announcement video does have one quick shot of the MMU3 mounted to the top of the CORE One. I didn't see any buffer, but maybe I missed it.
The buffer and spool holder solution might need to be a 3rd party product or opensource project (for 3rd parties to sell as kits/assembiles). I imagine some sort of sensor on each filament. When it senses more than a centimeter or so of back-feed on the filament, it would trigger a motor to roll the spool backwards to take up slack.
--> MK4 - MK4S - MINI+ - Accelerometer Guide - BambuLab A1 Combo <--
RE:
Ah I didn't see that bit in the video - maybe I didn't watch close enough!
How do you envision the MMU3 to be with the Core One?
Something similar to the AMS system by BambuLab, ie, a box that sits above the printer to contain the spools?
Or a 'free for all' like the current version where you place the spools as and where you can?
I wonder where the actual MMU3 and buffer will mount ie, above and outside the enclosure, or is there space inside?
The announcement video does have one quick shot of the MMU3 mounted to the top of the CORE One. I didn't see any buffer, but maybe I missed it.
The buffer and spool holder solution might need to be a 3rd party product or opensource project (for 3rd parties to sell as kits/assembiles). I imagine some sort of sensor on each filament. When it senses more than a centimeter or so of back-feed on the filament, it would trigger a motor to roll the spool backwards to take up slack.
Yeah, I've watched that video too much. 🤪 I just checked and the shot of the MMU3 is at 7:30 of the official video.
See my (limited) designs on:
Printables - https://www.printables.com/@Sembazuru
Thingiverse - https://www.thingiverse.com/Sembazuru/designs
RE: Prusa Core One - Intial thoughts......
Yeah, I've watched that video too much. 🤪 I just checked and the shot of the MMU3 is at 7:30 of the official video.
Ah yes I see - so looks like it will screw on to the outside of the frame - top rear - but also looks like the top cover of the frame has been removed? Either way it seems some imagination needs to go into spool placement again, as I assume Prusa's suggestion would be to fan them out behind the printer as before!
--> MK4 - MK4S - MINI+ - Accelerometer Guide - BambuLab A1 Combo <--