Are there no materials folks in here? Is no one going to chime in on the thermal expansion properties of aluminum? Seems like a bad material to make a bed out of if you want something that was machined flat to remain flat when heated.
The printer is great, I love it.
However, it’s like buying a ferrari… and yet the steering alignment is off. Sure you can still drive it, but it’s not correct.
Just like the warped beds that were shipped out.
I used the warped bed for 1 off prints, no problem. The software compensated for the warp. However, now that I need married parts that are face to face contact. It’s an issue.
Made of EN AW 5083 [AlMg4,5Mn0,7] special grade
Due to the cast structure and a special heat treatment, dimensional stability is optimally maintained even at high temperatures.
Seems like Kis3D did think about this, fortunately
Noice! Good to see a vendor making aftermarket stuff that actually thinks about this. So many of these parts are made by folks that have zero idea what they’re doing.
Wait until you hear about the thousands of tonnes of cast aluminium tooling plate that’s used just for that every month.
Meaning, cast aluminum tool plate is used in high temperature environments all the time, yes? (Without issues)
Many posts and no answer to your question.
I’m using the Kis3D plate with the embeded magnets since mid November.
My P1P had no problems with the weight.
Ok, good to hear. In transparency, I did ask Kis3D about this as well.
They mentioned no issues.
Tbh, the Kis3d sheet looks like a Band-Aid compared to the Princore bed.
Ummm… what’s with this?
Safety instructions:
- The silicone heating mat offered here may NOT be operated independently
- To operate the silicone heating mat offered here, appropriate control electronics are required
- The installation of the silicone heating mat offered here must be installed, checked and approved by a specialist with appropriate qualifications
- The silicone heating mat offered here must not be operated unattended
What is it that makes it a band-aid by comparison?
I don’t know the correct answer to this, but at 238x238mm isn’t the heating pad a bit undersized on the Princore?
A lot of money for other tolerances to be out. Personally been there in my previous “Ender” life with linear rails, shims, locking plates, glass/g10, endless tramming/bed meshing and all to avoid 2min fine sanding on a flat surface. Seriously its fun and interesting, gets the juices flowing and all that but we have machines that do have reasonably tight tolerances for the most part and yet there will be some degree of warp on the majority of prints. Processing the part afterwards makes more sense to me as it saves a hell of a lot of money and time searching to make that “corolla outperform the ferrari”.
It is great that the aftermarket is catering for stuff like this though, having options is always good 
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Sort of, but not.
Have you read the warped print bed, quality control post, which was and probably still is the largest post on this forum?
I’d say that the likely scenario is that the majority of users aren’t even aware, or aren’t printing anything large enough, or simply don’t need the accuracy to discover this.
To be fair, if there was no issue with warped beds, would we even be here discussing aftermarket plates sold specifically to combat this well-known issue?
The first ticket I created with BBL was due to my bed being warped close to 1mm in the centre. Eventually I got a replacement which was also warped but not as badly. Due to the lengthy process I had to go through for warranty and to fit the thing myself, I decided it wasn’t worth further arguments. If I relied heavily on creating functional pieces that needed to be spot on with their accuracy, or owned a business that relied on the same, I may have taken things further. But in the end, we’re dealing with melting plastic which has its own ways of warping when you don’t want it to.
Maybe BBL have tightened up their quality control since then, only someone with new machines could tell - if they cared enough about it.
I thought this was adequate and reasonable justification for why he wanted more flatness. Maybe he prints a lot of parts like this and doesn’t want to have to post-process hundreds of them when he shouldn’t have to. Or maybe he wants to establish that option for the future, regardless of present needs. The dollars involved just aren’t significant if it’s a solution that will serve him well.
This is when it may be time to consider an industrial solution. I understand the scalability issues, we’re looking at quality/tolerances beyond what this machine was designed for.
What would be the nearest industrial solution that’s within reach? Usually industrial solutions come at industrial prices, whereas the cost here seems pretty low in absolute magnitude.
BTW, I love these kinds of debates. I usually learn a lot from them.
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I’m not in the Printing industry, I missed that boat (retired) so can’t recommend any brand. This discussion is still relevant though as it can inspire diverse thinking and alternate solutions.
Yes the price is always a factor, especially when it varies from $2k to $100k in some cases. Upgrading this way can work. I was thinking out loud with my first post and asking whether it was maybe easier just sanding down the base a few thou’.
This plate could be glass flat and tolerant to warping once heated but then the three z-screws can throw out tramming with loose brass nuts etc, I’m of the opinion that chasing ones tail can be fun but kinda pointless in the end.
Over on this other thread, @AndiS explained how he was able to get the really high level of flatness he was targetting using cast aluminum:
Maybe, but that warped bed topic has less than 200 users posting and many of those posts are from people contributing to the discussion, not actually experiencing the problem.
I think you are right that many people who have the issue may not be aware. But I also think that it might not be as bad as it seems because like I said, many printers have been sold and a relatively small number of people have complained about it.
It is estimated that Bambu lab is making 14 million USD per month, so when you consider how many printers they are likely selling, the few people complaining about warped bed is quite small.
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The KIS 3d plate works great. I’ve been using it since it came out. I do have to run the bed hotter with it. It seems to run about 5 dec C under temp with it on. Easy enough to up all my print profiles by 5 or 10 deg C. I confirmed with my thermal camera. The heat distribution does seem more even with it though.
The owner was making a complete replacement bed with heating mat, but I haven’t heard the status of it the past month or two.