RE: The Core One Kit Waiting List
Absolutely this.
I've always thought of Prusa to be the best there is when it comes to 3D printers, I've now learnt of some of their foibles, but nobody is perfect.
For Prusa to still command a premium for their products, they need to step it up for launch and not leave to the community to fix it after the fact.
Aside the delivery issues with damaged consignments, the problems seem to be relatively minor, but at this price point, you'd really expect none. Or am I being to critical of a £900 printer?
Scott
Edit: Sorry for the spam, just got back from a family meal 😅
To be fair, at that price and made in EU its a budget machine, the cheapest on the market, I order 3D prints more expensive than a Core one each and every other week at work. 🙂
RE: The Core One Kit Waiting List
That's a fair comment, but maybe I should of stated that for none commercial, not industrial use?
But made in the EU and for what you get I suppose you're right. Although, look at the Chinese rivals and the features they bring for not much more dough, but let's not talk about the problems they have 😅
I think Prusa have a unique place in the market where their customers are more forgiving and willing to tinker than others, but, I do think they need to try and move away from this if they want to stay competitive in the market. The values and ethos of the company don't need to change, maybe just the way they approach their launches and I wish them the best in getting there.
Scott
RE: The Core One Kit Waiting List
That's a fair comment, but maybe I should of stated that for none commercial, not industrial use?
But made in the EU and for what you get I suppose you're right. Although, look at the Chinese rivals and the features they bring for not much more dough, but let's not talk about the problems they have 😅
I think Prusa have a unique place in the market where their customers are more forgiving and willing to tinker than others, but, I do think they need to try and move away from this if they want to stay competitive in the market. The values and ethos of the company don't need to change, maybe just the way they approach their launches and I wish them the best in getting there.
Scott
Yeah working in product R&D it makes me sweat when I see how late they are with finish up stuff at the moment 🙂 I agree on plug and play bit, they pretty much created that segment in the printing world, its the whole reason I went into prusa with my MK3S which was my first printer, and it absolutely did the plug and play printing thing well, assembled the kit, chose the premade profiles and it put out great prints, and I could foucus on the design bit instead of the printer. As more manufacturers join the plug and play printing world with bambu and others I also think its important that they dont skimp to much on the finishing touches, while still keeping a sound repairable design.
RE: The Core One Kit Waiting List
Sadly, i assembled the printer and it fails on Y Axis.
Just bangs the nextruder endlessly on the front right side, until it crashes and restarts.
Have you double-checked that the X carriage is orthogonal to the Y axis? If you disable the motors (or power off the Core One) and push the X rail all the way to the front, does it touch the end stops (the belt tensioner blocks) at the same time on both sides? There is a long thread on this issue here:
https://forum.prusa3d.com/forum/prusa-core-one-assembly-and-first-prints-troubleshooting/failed-y-calibration-of-a-new-coreone/
With the hindsight of having bent the two 90° mounting brackets for the X rail by hand (and realizing that it does not take a lot of force), I am ok with the procedure suggested by Prusa support to align the X rail in the assembled printer: Loosen the belts, detach X rail from bracket on one side, bend rail and bracket to obtain exact 90° angle. Rpeat on the other side and bracket. The linked thread has more details.
RE: The Core One Kit Waiting List
For the case where the holes are oversized could you use a threaded brass insert?
RE: The Core One Kit Waiting List
For the case where the holes are oversized could you use a threaded brass insert?
I was thinking the same thing - normally you have to model a bigger hole to accept an insert, so I guess you'd need to carefully drill out the hole a little. Perhaps save that for a rescue if the screw won't hold.
RE: The Core One Kit Waiting List
Okay, it was not square. I bent the holder, Y axis now passes every time. Left and Right side had ~2mm difference.
Next issue, X axis just moves the head left and right for a few seconds, then fails.
What could it be? No error message, just red X and done. No info what went wrong.
Sadly, i assembled the printer and it fails on Y Axis.
Just bangs the nextruder endlessly on the front right side, until it crashes and restarts.Have you double-checked that the X carriage is orthogonal to the Y axis? If you disable the motors (or power off the Core One) and push the X rail all the way to the front, does it touch the end stops (the belt tensioner blocks) at the same time on both sides? There is a long thread on this issue here:
https://forum.prusa3d.com/forum/prusa-core-one-assembly-and-first-prints-troubleshooting/failed-y-calibration-of-a-new-coreone/With the hindsight of having bent the two 90° mounting brackets for the X rail by hand (and realizing that it does not take a lot of force), I am ok with the procedure suggested by Prusa support to align the X rail in the assembled printer: Loosen the belts, detach X rail from bracket on one side, bend rail and bracket to obtain exact 90° angle. Rpeat on the other side and bracket. The linked thread has more details.
RE: The Core One Kit Waiting List
Okay, it was not square. I bent the holder, Y axis now passes every time. Left and Right side had ~2mm difference.
Next issue, X axis just moves the head left and right for a few seconds, then fails.
What could it be? No error message, just red X and done. No info what went wrong.
Hmm, I don't recall seeing any reports of that error on the forum. Is it hunting for the home position (banging X into the right end stop) or just moving somewhere in the middle of the travel range?
I take it that you have adjusted the belt tension? (Maybe check it again after you had to loosen the belts for the X carriage adjustment.) There is some interaction between the X and Y belt tension, so you may need to iterate a couple of times to get them both to ~85 Hz.
With the motors powered off, does the X movement feel smooth when you move the tool head by hand? I found the main cable to the Nextruder to be quite short, so it's tricky to find the balance where it reaches into the electronics box but also dies not tug on the toolhead. And you did re-seat all the screws which hold the X rail to its brackets after straightening the rail, right?
RE: The Core One Kit Waiting List
Well, i'll wait for Prusa customer support.
It passed the Y axis test 3 times, then fails again every time.
Man, i'll give this printer max 1 week of troubleshooting, then it goes back to prusa.
My Mini+, then MK4 and MMU3 both did not gave me such a headache then this printer alone.
Okay, it was not square. I bent the holder, Y axis now passes every time. Left and Right side had ~2mm difference.
Next issue, X axis just moves the head left and right for a few seconds, then fails.
What could it be? No error message, just red X and done. No info what went wrong.Hmm, I don't recall seeing any reports of that error on the forum. Is it hunting for the home position (banging X into the right end stop) or just moving somewhere in the middle of the travel range?
I take it that you have adjusted the belt tension? (Maybe check it again after you had to loosen the belts for the X carriage adjustment.) There is some interaction between the X and Y belt tension, so you may need to iterate a couple of times to get them both to ~85 Hz.
With the motors powered off, does the X movement feel smooth when you move the tool head by hand? I found the main cable to the Nextruder to be quite short, so it's tricky to find the balance where it reaches into the electronics box but also dies not tug on the toolhead. And you did re-seat all the screws which hold the X rail to its brackets after straightening the rail, right?
RE: The Core One Kit Waiting List
Well, i'll wait for Prusa customer support.
It passed the Y axis test 3 times, then fails again every time.
Man, i'll give this printer max 1 week of troubleshooting, then it goes back to prusa.
My Mini+, then MK4 and MMU3 both did not gave me such a headache then this printer alone.
The problem I had with my Core One's Y axis was that the cable from the side filament sensor got in the way, causing a lot of friction in the Y transport in the back half of its travel. That resulted in Y homing errors for me. That was an assembly error on my part; the cable hat gotten stuck in its zip tie in the back and had bulged inward. After straightening it to get it out of the way, Y homing worked.
But I don't get why the X/Y homing needs to be so finicky and noisy. Do they have to bump into the end stops at such a high speed (and hence noise level) to make the StallGuard work? Do they have to do it so many times, presumably to get better averaging? Does it have to be so sensitive to the two Y end-stops not being exactly in sync? I will raise an issue in Github.
(What are the precise X/Y home positions good for anyway? Resuming after power outages is the only reason I can think of. I don't care about that at all, hence could certainly live with a less accurate and sensitive homing. As long as the printer has a reasonable idea where its printable area is, I'm good -- and a single, less forceful approach into the end stops should be good enough to figure that out?)
RE: The Core One Kit Waiting List
Can we move the issues to another thread and keep the discussion here for the people who wait ? 🙂
RE: The Core One Kit Waiting List
You are absolutely right. Sorry for the inconvenience.
Can we move the issues to another thread and keep the discussion here for the people who wait ? 🙂
RE: The Core One Kit Waiting List
I removed the filtration and camera from the order as there was quite a bit of chatter on here about longer delays with extras.
I decided that according to the reviews the camera looked too basic for my wants and I could do without the filtration at the present time.
I'll need to order again from Prusa once the mmu becomes available so I can rethink any other extras when that time comes.
I was concerned that editing my order would send me to the back of the queue as a new order but seems to be in the same place.
I did use the voucher to order a spool of filament last week and that is now in the UK being delivered tomorrow, this prompt service gives me good hope for future orders.
I ordered Feb 2nd and I too don't have a batch number...just TBA. I contacted support and they said mine would probably ship out mid May. Didn't give me a batch number or anything just said mid may.
I ordered 3rd Feb, I'm batch 5, expected 14th May, but I do still have the filtration in my order, which is holding it back. So i would expect you to be in front of me in the 'queue'.
You got any other items in your basket that could potentially delay it? Buddy Cam and Filtration are the 2 main ones, unless you've ordered some filament that isn't going to be available until next Jelember?
Scott
I ordered 8th Feb, also in batch 5, expected shipping starts 14th May.
I originally had the filtration system and the camera in the order but cancelled them a few weeks ago as I thought it would hold up the order even more.
So removing the filtration from your order didn't change your expected delivery? Interesting 🤔 I may just leave my order be and see what happens, although I'd like to have my printer yesterday, it'd be nice to not have to pay for 2 separate orders, especially when I know I'll need it further down the line to print ABS etc.
Scott
RE: The Core One Kit Waiting List
Can we move the issues to another thread and keep the discussion here for the people who wait ? 🙂
After the waiting comes the building, and then the troubleshooting. Consider reading about it "expectation management" while you wait. 😉
But you are right, of course -- let's move these discussions to the "Hardware & firmware help" or the "Assembly and first prints" sections. Many of the issues are not specific to the kit anyway but may affect pre-assembled printers as well.
RE: The Core One Kit Waiting List
Ordered the kit on the 31st Jan at 5:14 just got the shipped notification now. Lets see when and how ill arrive as tommorow i'm going to visit Prague 🙂
RE: The Core One Kit Waiting List
When I see the delay of the CORE One kit, I almost consider buying a pre assembled, dismantle it and reassemble it 😅
RE: The Core One Kit Waiting List
When I see the delay of the CORE One kit, I almost consider buying a pre assembled, dismantle it and reassemble it 😅
What delay?
RE: The Core One Kit Waiting List
About 11-12 weeks lead time if I buy one today.
RE:
Interesting.
My email confirmation arrived at 17:13, and no sign of anything happening, despite support telling me it was due to ship yesterday/7th.
There are other items in my order, but was assured they wouldn’t hold it up.
Ordered the kit on the 31st Jan at 5:14 just got the shipped notification now. Lets see when and how ill arrive as tommorow i'm going to visit Prague 🙂
RE: The Core One Kit Waiting List
Just had a handover to DHL email. Ordered confirmed at 16:12 (UK time) on release day.
Would be nice to get it for the weekend although I suspect it will be early next week.