RE: MK4S to Prusa CORE One Conversion kit Waiting list
There’s no point in you trying to teach others how to manage a supply chain; if Prusa’s behavior seems normal to you, it just shows you operate as poorly as they do, so spare us—you're in no position to teach anyone anything on the topic.
I’ve no idea why you didn’t get an email after you ordered – I did, or do you want one every week telling you everything is still same as when you placed an order.
Having seen problems because something obvious was overlooked or mistakes made on far larger projects – yes it is possible they didn’t know at the beginning or what they were planning went wrong due to circumstances beyond their control.
Having dealt with supply systems for a long time, most struggle badly when demand ramps up unexpectedly well beyond what levels it was setup for – if they can cope with such unexpected surges then you are likely spending far too much money on it.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
What makes you think it is a supply chain issue? Although that was an issue in COVID, they have said in more recent videos that supply levels are not low. I am pretty sure that was when they released the MK4S.
There’s no point in you trying to teach others how to manage a supply chain; if Prusa’s behavior seems normal to you, it just shows you operate as poorly as they do, so spare us—you're in no position to teach anyone anything on the topic.
I’ve no idea why you didn’t get an email after you ordered – I did, or do you want one every week telling you everything is still same as when you placed an order.
Having seen problems because something obvious was overlooked or mistakes made on far larger projects – yes it is possible they didn’t know at the beginning or what they were planning went wrong due to circumstances beyond their control.
Having dealt with supply systems for a long time, most struggle badly when demand ramps up unexpectedly well beyond what levels it was setup for – if they can cope with such unexpected surges then you are likely spending far too much money on it.
--------------------
Chuck H
3D Printer Review Blog
RE: MK4S to Prusa CORE One Conversion kit Waiting list
When they opened orders for the MK4 S upgrade, they pulled the same stunt.They announced “immediate availability,” yet people like me—who ordered a minute after sales opened—didn’t receive the upgrade until months later.
All of this happened because the upgrade wasn’t compatible with printers that still have the old display.Naturally, Prusa made no effort to warn users; people only discovered it by chance.
Now, with the Core One upgrade, the story is repeating itself.I’m not sure if the question was aimed at me, but from my point of view I don’t care about their logistical problems—what I want is for them to be more transparent and fair with their customers.
What makes you think it is a supply chain issue? Although that was an issue in COVID, they have said in more recent videos that supply levels are not low. I am pretty sure that was when they released the MK4S.
There’s no point in you trying to teach others how to manage a supply chain; if Prusa’s behavior seems normal to you, it just shows you operate as poorly as they do, so spare us—you're in no position to teach anyone anything on the topic.
I’ve no idea why you didn’t get an email after you ordered – I did, or do you want one every week telling you everything is still same as when you placed an order.
Having seen problems because something obvious was overlooked or mistakes made on far larger projects – yes it is possible they didn’t know at the beginning or what they were planning went wrong due to circumstances beyond their control.
Having dealt with supply systems for a long time, most struggle badly when demand ramps up unexpectedly well beyond what levels it was setup for – if they can cope with such unexpected surges then you are likely spending far too much money on it.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
Does anyone know why Prusa has to ship products in 'batches'? This seems like an artificial construct like they can only assemble so many kits at a time instead of a continuous flow. The high-touch business model that got them this far, may no longer scale beyond
RE: MK4S to Prusa CORE One Conversion kit Waiting list
I don't think they actually do shipping in batches, it is just a rough division to give people an idea around when they can expect their order to ship.
Does anyone know why Prusa has to ship products in 'batches'? This seems like an artificial construct like they can only assemble so many kits at a time instead of a continuous flow. The high-touch business model that got them this far, may no longer scale beyond
RE: MK4S to Prusa CORE One Conversion kit Waiting list
Does anyone know why Prusa has to ship products in 'batches'? This seems like an artificial construct like they can only assemble so many kits at a time instead of a continuous flow. The high-touch business model that got them this far, may no longer scale beyond
Production is probably going continuously. But imagine they are shipping thousands of big packages with printers or kits every week. They can't do it by handling one by one. It makes a lot of sense that they do it in batches calculated in advance. They know how big are packages. How many they can fit on the pallet. How many pallets fits into delivery truck of each carrier. Which weekday should each carrier send their trucks, and how many of them, so they are ready to load them. I can imagine they may even group the packages by their destination so they don't have to go trough carrier's local sorting facility but trucks are heading directly to airport, EU countries, etc.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
For guy that does not care about their logistics, you droned on about it a lot and did not answer the question.
I, also, had the issue with the lCD. I shelled out the cash to buy a new one.
When they opened orders for the MK4 S upgrade, they pulled the same stunt.They announced “immediate availability,” yet people like me—who ordered a minute after sales opened—didn’t receive the upgrade until months later.
All of this happened because the upgrade wasn’t compatible with printers that still have the old display.Naturally, Prusa made no effort to warn users; people only discovered it by chance.
Now, with the Core One upgrade, the story is repeating itself.I’m not sure if the question was aimed at me, but from my point of view I don’t care about their logistical problems—what I want is for them to be more transparent and fair with their customers.
What makes you think it is a supply chain issue? Although that was an issue in COVID, they have said in more recent videos that supply levels are not low. I am pretty sure that was when they released the MK4S.
There’s no point in you trying to teach others how to manage a supply chain; if Prusa’s behavior seems normal to you, it just shows you operate as poorly as they do, so spare us—you're in no position to teach anyone anything on the topic.
I’ve no idea why you didn’t get an email after you ordered – I did, or do you want one every week telling you everything is still same as when you placed an order.
Having seen problems because something obvious was overlooked or mistakes made on far larger projects – yes it is possible they didn’t know at the beginning or what they were planning went wrong due to circumstances beyond their control.
Having dealt with supply systems for a long time, most struggle badly when demand ramps up unexpectedly well beyond what levels it was setup for – if they can cope with such unexpected surges then you are likely spending far too much money on it.
--------------------
Chuck H
3D Printer Review Blog
RE: MK4S to Prusa CORE One Conversion kit Waiting list
For a guy who just bought a new LCD for nothing, you’re arguing too much.
If you’re happy to spend €480 plus another €100 for the new display and end up with a CoreXY that offers nothing more than many competitors, good for you. Personally, once the price hits €580 I start thinking differently, and I’m certainly not going to hand Prusa €100 just to get the upgrade a few weeks or months earlier.
Right now, I’d just like to know when Prusa will finally bother to tell owners of the old LCD how much longer they’ll have to wait—without having to spend money or dig around for the answer.
I couldn’t care less about their logistics issues; that excuse was dragged out by some fanboy eager to defend Prusa’s decisions—like the deliberate choice to ship upgrades for owners of the old LCD only afterwards, exactly as they did with the MK4S upgrade.
For guy that does not care about their logistics, you droned on about it a lot and did not answer the question.
I, also, had the issue with the lCD. I shelled out the cash to buy a new one.
When they opened orders for the MK4 S upgrade, they pulled the same stunt.They announced “immediate availability,” yet people like me—who ordered a minute after sales opened—didn’t receive the upgrade until months later.
All of this happened because the upgrade wasn’t compatible with printers that still have the old display.Naturally, Prusa made no effort to warn users; people only discovered it by chance.
Now, with the Core One upgrade, the story is repeating itself.I’m not sure if the question was aimed at me, but from my point of view I don’t care about their logistical problems—what I want is for them to be more transparent and fair with their customers.
What makes you think it is a supply chain issue? Although that was an issue in COVID, they have said in more recent videos that supply levels are not low. I am pretty sure that was when they released the MK4S.
There’s no point in you trying to teach others how to manage a supply chain; if Prusa’s behavior seems normal to you, it just shows you operate as poorly as they do, so spare us—you're in no position to teach anyone anything on the topic.
I’ve no idea why you didn’t get an email after you ordered – I did, or do you want one every week telling you everything is still same as when you placed an order.
Having seen problems because something obvious was overlooked or mistakes made on far larger projects – yes it is possible they didn’t know at the beginning or what they were planning went wrong due to circumstances beyond their control.
Having dealt with supply systems for a long time, most struggle badly when demand ramps up unexpectedly well beyond what levels it was setup for – if they can cope with such unexpected surges then you are likely spending far too much money on it.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
My order 22 minutes after release, batch 1, no addons, new xLCD is In progress
RE:
It looks pretty normal to me when your demand goes up by 20+ times what you are geared to handle, or your capacity to handle drops similarly - you get huge backlogs while you try and clear them more orders come in. Ramping up capability for short term is difficult even worse if you need skilled workers but that capacity need will drop quickly after the backlog is cleared.
As far as I can tell Prusa has been honest with what they said they'd do and time frames for shipping to start while you may not like them taking the full amount upfront, it appears fully refundable no quibbles - unlike the deposits I put down on other things.
You may not like they announce things before they will be in a position to deliver, but then others may prefer to know in advance - you will never please everyone, and the announcing things early can build up a demand backlog if it is popular causing some of the issues. No one is forcing you to sit on, to borrow an IT term, "the bleeding edge", at this point either buy something else or wait for the early adopters backlogs to clear
There’s no point in you trying to teach others how to manage a supply chain; if Prusa’s behavior seems normal to you, it just shows you operate as poorly as they do, so spare us—you're in no position to teach anyone anything on the topic.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
My order was placed on January 31st at 18:40 local time. Batch 1 was changed to shipped today at 18:20. DPD has not yet received the package.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
Nice to see, that other orders with DPD are shipping now.
Hopefully mine will be shipped tomorrow.
Batch 1, with DPD too.
My order was placed on January 31st at 18:40 local time. Batch 1 was changed to shipped today at 18:20. DPD has not yet received the package.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
I am glad to see some folks are getting their printers and happy. Congrats.
--------------------
Chuck H
3D Printer Review Blog
RE: MK4S to Prusa CORE One Conversion kit Waiting list
Agreed, I'd like to hear about the conversion experience and how smooth, based on the kit installs knoledge collected so far, the install works; especially around things like horizontal plate skew, uneven gaps with the gentry, etc etc
If there is one positive thing in being in batch 7 (old display, camera and filtration, so it may be even much later) is that a large number of forum users will go through the install before I even get the kit.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
Agreed, I'd like to hear about the conversion experience and how smooth, based on the kit installs knoledge collected so far, the install works; especially around things like horizontal plate skew, uneven gaps with the gentry, etc etc
If there is one positive thing in being in batch 7 (old display, camera and filtration, so it may be even much later) is that a large number of forum users will go through the install before I even get the kit.
What would you like to know? I did my conversion early last week (Monday --> Wednesday). A few general comments:
1. The kit building experience was easier than the MK4S kit. There's less inserting nuts into printed parts, which was a nice change of pace.
2. There's a tiny bit of gantry skew on my unit. I'm running the belts at ~85hz and ~89hz. Closing the gantry gap seems to be very very important, otherwise the printer homes over and over and over and over. Right now it bonks the front corner twice and then gets on to business. Adjusting the belt is a bit tedious. I've found that adjusting one belt will affect the tension of the other. So frequent checks are required and the adjustments should be very small, 1/4 turn or less each time. After each adjustment I checked the belts, but also the gap between the gantry and the front. Take your time here, it'll help in the end.
3. There's a few fiddly sections, like getting the rear bed spacer installed while lowering the heatbed down on the lead screws. Mounting the side filament sensor is also a bit of a pain. But, in the end its easy enough to do with one person.
4. Pay attention to the directions on the heat bed cables. If you put them on wrong installing the cable cover is exceedingly (but not impossible) difficult. Fixing it after the fact is a huge pain. Ask me how I know.
5. Pay attention to the magnets in the side filament sensor. They absolutely need to be pushed flush otherwise the sensor arm will get stuck on the cover and it won't read properly. Fixing this after is also a huge pain in the butt. Again, ask me how I know. The sad bit about this one is that you can't verify it's working until the printer is on, and you don't turn it on until later so you have no way to know if the sensor is sticky or not. Check this from the Info --> Sensors screen. It'll say "INS 2" when filament is installed and "NINS 1" when not.
6. The rubber vibration feet are leaving black/blue marks on my white table. The table is already trashed from being a kids craft table once upon a time, but if it wasn't I would be pretty annoyed.
7. The build guide is decent enough. There's some copy/paste from the full kit build guide that don't really apply to the conversion. For example, you need to download the Core One firmware file to your MK4S USB stick manually. Even if the printer is on 6.2.4 it will complain and do nothing until the USB stick has the Core One firmware file on it. I used 6.3.2.
8. I had run the accelerometer on my MK4S. After conversion the printer retained those custom values. Be sure to reset them to defaults otherwise you're going to be running with very wrong input shaper values.
9. My printer didn't go straight into calibrations on first boot of the Core One firmware. I ran them manually from the Control menu. Then, I ultimately decided to do a hard factory reset so that everything was for sure back to stock values.
10. Calibrating the door sensor was a huge pain. I kept doing what it asked, but it kept saying I didn't. I finally got it working by doing the following:
- Loosen the door sensor so you cannot hear it click when the door is opened / closed.
- Start the door sensor calibration. Tighten it JUST ENOUGH that you can hear it click when the door closes fully. You shouldn't hear the sensor click if you close the door with your hand between the door and the frame. It will ask you to try this.
- Tighten the door sensor again when prompted, this time make sure it clicks when you close the door with your hand between the frame and the door.
11. My MK4S z-axis stepper motors were A LOT more notchy (stepper-y?) feeling than the extra one that comes in the kit. The kit unit has a different part number so I'm assuming this is just from some sort of part revision. Prusa support said I was good to continue the build if my MK4S was working properly (it was.) Everything seems fine, the z-axis is moving correctly and had zero issues homing.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
Lots of good tips here!
Although I went for the full kit over the conversion, the build itself is of course very similar.
1. Certainly agree with this - far fewer nuts etc to install, which was a nice surprise. I didnt find the CoreXY assembly chapter a little more fiddly, but once underway it wasn't so bad (it reads more daunting then it is!). A nice overall build project though!
2. Again, agree. The tension setting is a pain. The app just wouldn't work for me this time round, even though it was perfect with the MK4s. I just ended up doing the test to ensure the gantry was square, which could 'reset' again when setting tension! So once the gantry was square i set tension on both equally and just went by feel. Seem to have done OK as my printer has been fine for its first few prints!
3. I have a tip in my video build guide on that bed spacer, and how to easily get it lined up first time. That side sensor was also a bit fiddly, but not so bad if you put the entire panel in place and hold the sensor by reaching through from the inside of the printer (again, shown in my video).
5. Magnets in the filament sensor are easy enough to set, and you can se if its still working by inserting some filament and listening for the click as you insert/remove it. Again, we test this several time sin my build guide to ensure its working when the cover is on, and also when teh side panel is installed 😉
8. Good tip! I did run the accelerometer again although as it was a new kit build I had no old values to restore or reset.
10. Agree! However, I realised what I was doing wrong! The wizard says to fully open the door, then to close it but with you fingers stopping it from closing completely! I kept trying to close completely so it kept asking to adjust the sensor every time! As soon as I followed what it actually said - so closed with a finger gap, it worked straight away and passed the calibration.
Agreed, I'd like to hear about the conversion experience and how smooth, based on the kit installs knoledge collected so far, the install works; especially around things like horizontal plate skew, uneven gaps with the gentry, etc etc
If there is one positive thing in being in batch 7 (old display, camera and filtration, so it may be even much later) is that a large number of forum users will go through the install before I even get the kit.
What would you like to know? I did my conversion early last week (Monday --> Wednesday). A few general comments:
1. The kit building experience was easier than the MK4S kit. There's less inserting nuts into printed parts, which was a nice change of pace.
2. There's a tiny bit of gantry skew on my unit. I'm running the belts at ~85hz and ~89hz. Closing the gantry gap seems to be very very important, otherwise the printer homes over and over and over and over. Right now it bonks the front corner twice and then gets on to business. Adjusting the belt is a bit tedious. I've found that adjusting one belt will affect the tension of the other. So frequent checks are required and the adjustments should be very small, 1/4 turn or less each time. After each adjustment I checked the belts, but also the gap between the gantry and the front. Take your time here, it'll help in the end.
3. There's a few fiddly sections, like getting the rear bed spacer installed while lowering the heatbed down on the lead screws. Mounting the side filament sensor is also a bit of a pain. But, in the end its easy enough to do with one person.
4. Pay attention to the directions on the heat bed cables. If you put them on wrong installing the cable cover is exceedingly (but not impossible) difficult. Fixing it after the fact is a huge pain. Ask me how I know.
5. Pay attention to the magnets in the side filament sensor. They absolutely need to be pushed flush otherwise the sensor arm will get stuck on the cover and it won't read properly. Fixing this after is also a huge pain in the butt. Again, ask me how I know. The sad bit about this one is that you can't verify it's working until the printer is on, and you don't turn it on until later so you have no way to know if the sensor is sticky or not. Check this from the Info --> Sensors screen. It'll say "INS 2" when filament is installed and "NINS 1" when not.
6. The rubber vibration feet are leaving black/blue marks on my white table. The table is already trashed from being a kids craft table once upon a time, but if it wasn't I would be pretty annoyed.
7. The build guide is decent enough. There's some copy/paste from the full kit build guide that don't really apply to the conversion. For example, you need to download the Core One firmware file to your MK4S USB stick manually. Even if the printer is on 6.2.4 it will complain and do nothing until the USB stick has the Core One firmware file on it. I used 6.3.2.
8. I had run the accelerometer on my MK4S. After conversion the printer retained those custom values. Be sure to reset them to defaults otherwise you're going to be running with very wrong input shaper values.
9. My printer didn't go straight into calibrations on first boot of the Core One firmware. I ran them manually from the Control menu. Then, I ultimately decided to do a hard factory reset so that everything was for sure back to stock values.
10. Calibrating the door sensor was a huge pain. I kept doing what it asked, but it kept saying I didn't. I finally got it working by doing the following:
- Loosen the door sensor so you cannot hear it click when the door is opened / closed.
- Start the door sensor calibration. Tighten it JUST ENOUGH that you can hear it click when the door closes fully. You shouldn't hear the sensor click if you close the door with your hand between the door and the frame. It will ask you to try this.
- Tighten the door sensor again when prompted, this time make sure it clicks when you close the door with your hand between the frame and the door.
11. My MK4S z-axis stepper motors were A LOT more notchy (stepper-y?) feeling than the extra one that comes in the kit. The kit unit has a different part number so I'm assuming this is just from some sort of part revision. Prusa support said I was good to continue the build if my MK4S was working properly (it was.) Everything seems fine, the z-axis is moving correctly and had zero issues homing.
RE: MK4S to Prusa CORE One Conversion kit Waiting list
Ordered day one, batch 1, just moved to shipped, time to get mk4s out and dis-assembled
RE: MK4S to Prusa CORE One Conversion kit Waiting list
Be sure to do the firmware update first. Seems folks are overlooking this.
Ordered day one, batch 1, just moved to shipped, time to get mk4s out and dis-assembled
RE: MK4S to Prusa CORE One Conversion kit Waiting list
It's the first step in the manual. Sloppy if you miss that step, and does not bode well for the rest of the conversion.
Be sure to do the firmware update first. Seems folks are overlooking this.
Ordered day one, batch 1, just moved to shipped, time to get mk4s out and dis-assembled
RE:
Ordered day one, batch 1, just moved to shipped, time to get mk4s out and dis-assembled
Lucky you! Also ordered day 1 new LCD (Batch 1) and my order is still "new"