# U1 Top Cover Won't Stay In Place **URL:** \ **Category:** U1 Toolchanger\ **Tags:** hardware\ **Created:** [August 19, 2026, 2:39pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062 "2026-08-19T14:39:41Z")\ **Posts on this page:** 20\ **Page:** 7
**Author:** ![CrazyIvan](https://avatars.discourse-cdn.com/v4/letter/c/7bcc69/32.png) [@CrazyIvan](https://forum.snapmaker.com/u/CrazyIvan)\ **Post date:** [September 24, 2026, 12:36pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/125 "2026-09-24T12:36:25Z")
From what I recall, the “revised mould” is to extend the ‘legs’ that fit into the top screw covers, and that said legs require reinforcement in that case so they don’t just snap off, as they would exceed the overall dimensions of the top cover and therefore hit the ground first. Personally, I don’t think that’s a “solution” I would go for, even if offered. Unless there are other, more substantial, alterations to address other issues, I don’t see the point. In any case, I don’t see that Snapmaker have any responsibility to replace the top covers, all they need to do is provide a solution to each customer’s specific concerns, where those concerns are with the advertised expectations of the product. So far as I can see (and I have not had a chance to test it yet), replacement screw covers will be sufficient to deal with the fitting problem, so provision of replacement screw covers should be all Snapmaker has to be responsible for. If people are prepared to print their own, all well and good, but ideally they would be of similar material and quality as the existing screw covers. I do not understand why Snapmaker appear to be pursuing any other course of action. UPDATE: see [U1 Top Cover Won't Stay In Place - #176 by CrazyIvan](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/176) ---
**Author:** ![Mjd26](https://avatars.discourse-cdn.com/v4/letter/m/3ec8ea/32.png) [@Mjd26](https://forum.snapmaker.com/u/Mjd26)\ **Post date:** [September 24, 2026, 12:43pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/126 "2026-09-24T12:43:59Z")
Hi @Zoe_M FYI; I received my top cover today and have confirmed the same issue as described in this thread. Notably, it appears that the radius for the corners of the top cover is incorrect, resulting in the top cover “cutting the corner”. I’ve tried to capture it in-situ, and also traced both the top cover outer edge and the printer outer edge. I traced both corners of the printer to provide two references, and deliberately traced one closer to the line for the top cover. It becomes abundantly clear that the corner shape is incorrect relative to the corner shape of the printer. This incorrect shaping means that the 5mm foam compresses far more in the corner than it does along the side, exacerbating the back pressure issue from the foam, because instead of an even distribution on a lot of foam, it’s a high pressure in the corners and a lower pressure elsewhere. Whatever changes may be getting made to the top cover model, someone needs to validate the radius used for the corners. ![20260924_220150](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/a/8/a8a90e880193d7dc293ba456aac5702483dc19cd.jpeg) ![20260924_220334](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/a/c/ac671a5eb7434510bb612e546c4378a81a40104f.jpeg) ![20260924_220235](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/1/1/11b0a6e727fda3868a21bdf1adb536a07104b445.jpeg) ![20260924_220201](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/1/2/121d51453e357ce5bf9f0a53800cb2c931ac5987.jpeg) ---
**Author:** ![tomini](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/tomini/32/36536_2.png) [@tomini](https://forum.snapmaker.com/u/tomini)\ **Post date:** [September 24, 2026, 1:08pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/127 "2026-09-24T13:08:38Z")
**Between 11:59 and 12:23 UTC on 24 September, after my post** #123, **Zoe\_M edited eight of her earlier posts:** #38, #73, #76, #82, #94, #97, #116 and #122. The edit history is public (click the pencil on each post). The current text of these posts no longer contains the statements I quoted in #123. Removed: - #38: the mold proposal (“extending the height of the four corner posts”) and “a high-priority item on our roadmap”. - #73: “we have opened a project to revise the top-cover mold” and the 3mm to 5mm foam explanation. Replaced with “within the normal range of assembly tolerances”. - #76, #94: “We take full ownership of this issue” and “temporary workaround”. - #82: “Orders placed right now will still be shipped with the original-design top cover.” - #97: “official” in “the final official fix”. - #116: “structural adaptation imperfections on our end”, “full responsibility”, “not an official formal fix”, “formal rectification plan”, and the mention of replacement parts and returns. Replaced with “within the normal range of assembly tolerances”. - #122: “manufactured before the mold was revised”. The new text of #73 and #116 matches the wording of the support email I received today after my reply to this thread (2026-09-24). I have archived the thread including the revision history. Questions for @Zoe_M: 1. Is the current text of these posts Snapmaker’s position, replacing the earlier statements? 2. If so, could you post a dated note listing which statements are withdrawn? Owners who wrote to support after #116 asked for returns, replacement parts and the mold fix on the basis of those statements. My two questions in #123 are still open: > [@tomini](#): > > 1. Which position applies to owners of the original-design cover: normal tolerance, or a defect that the mold revision will fix? > 2. Once the revised mold is in production, will these owners get a revised cover at no cost, and can support note that on the ticket? ---
**Author:** ![Zoe\_M](https://avatars.discourse-cdn.com/v4/letter/z/8491ac/32.png) [@Zoe\_M](https://forum.snapmaker.com/u/Zoe_M)\ **Post date:** [September 24, 2026, 1:44pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/128 "2026-09-24T13:44:54Z")
~~Hi, thank you for pointing out the inconsistency in my previous replies.~~ ~~I sincerely apologize for my earlier inaccurate understanding of the situation, which led to replies that did not match the actual circumstances and caused confusion. So I updated the previous comments.~~ ~~I’ve verified this matter with the relevant team, and the unified and accurate response is as follows: The mounting posts underneath the Top Cover may not remain fully seated in the silicone pads after installation. This is within the normal range of assembly tolerances and does not affect the installation, sealing performance, or normal use of the Top Cover.~~ Updated(2026.10.8): Please check **[post #181](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/181)** for the latest information. > [@](#): > > Hi everyone, thank you for your continued feedback and patience. I also want to sincerely apologize for editing some of my previous replies in this thread without clearly explaining the changes at the time. Instead of quietly editing those replies, I should have kept the original information and added a clear follow-up when the plans changed or were clarified. That was the wrong way to handle the communication. We have now updated our Wiki with the latest information on the Top Cover seating c… I’ll also keep updating progress and next steps for this matter in the following topic. [U1 Top Cover Seating: Update and Improvement Plan](https://forum.snapmaker.com/t/u1-top-cover-seating-update-and-improvement-plan/43524) > [@](#): > > Hi Snapmaker U1 owners, We’ve seen your recent feedback regarding the seating of the U1 Top Cover, and we’d like to share an update on what we’ve learned and we’re doing to improve the experience. First, thank you to everyone who has taken the time to share your experience and feedback with us. We’ve reviewed the reported situation and have also updated our Wiki to provide a clearer explanation and the latest improvements. For the full details, please see our updated Wiki: [Top Cover Seating:…](https://wiki.snapmaker.com/en/resource_hub/top_cover_seating) Best regards, ---
**Author:** ![Mjd26](https://avatars.discourse-cdn.com/v4/letter/m/3ec8ea/32.png) [@Mjd26](https://forum.snapmaker.com/u/Mjd26)\ **Post date:** [September 24, 2026, 1:50pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/129 "2026-09-24T13:50:12Z")
That’s a decidedly disquieting set of edits and drastically changes the tone of this thread. I think I’ll need to look at requesting a full refund, given that pretty much all references to a rework are now gone, and from my perspective this cover is not actually correctly engineered to fit this printer. The corner radius is incorrect, the post lengths are incorrect and the result is that the overall fit is incorrect. After a year of waiting; “disappointed” and “frustrated” would be spectacular understatements. ---
**Author:** ![Mjd26](https://avatars.discourse-cdn.com/v4/letter/m/3ec8ea/32.png) [@Mjd26](https://forum.snapmaker.com/u/Mjd26)\ **Post date:** [September 24, 2026, 1:55pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/130 "2026-09-24T13:55:22Z")
@Zoe_M as per my comment above, with the images showing the questionable radius of the corners, this is a view showing the effect it has on the foam under slight compression. You can see that the corner compresses far more, because it is fully on top of the printer chassis, while the sections at the front and sides are partly on top of the chassis and partly to the side, resulting in less compression. A compound result of this and the post fitment issue is that it increases the chance of the hard plastics of the cover and the printer knocking together, rather than being correctly damped by the foam. ![20260924_224429](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/7/0/7069b33c7cd50efe48c3cd7793e0da360338ee04.jpeg) ---
**Author:** ![Boxkite](https://avatars.discourse-cdn.com/v4/letter/b/df705f/32.png) [@Boxkite](https://forum.snapmaker.com/u/Boxkite)\ **Post date:** [September 24, 2026, 2:04pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/131 "2026-09-24T14:04:56Z")
I really don’t understand the need for these ‘posts’ in the first place. ---
**Author:** ![Boxkite](https://avatars.discourse-cdn.com/v4/letter/b/df705f/32.png) [@Boxkite](https://forum.snapmaker.com/u/Boxkite)\ **Post date:** [September 24, 2026, 2:08pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/132 "2026-09-24T14:08:43Z")
Wow, that really is bad if it’s by design. I am wondering though if it’s a result of shrinkage after coming out of the mold. It might be possible to tell by looking at the draft angle as it passes around the corner and checking if the draft angle has been pulled in by shrinkage. ---
**Author:** ![Boxkite](https://avatars.discourse-cdn.com/v4/letter/b/df705f/32.png) [@Boxkite](https://forum.snapmaker.com/u/Boxkite)\ **Post date:** [September 24, 2026, 2:11pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/133 "2026-09-24T14:11:23Z")
It seems that much of Zoe’s posts are AI. ---
**Author:** ![Zoe\_M](https://avatars.discourse-cdn.com/v4/letter/z/8491ac/32.png) [@Zoe\_M](https://forum.snapmaker.com/u/Zoe_M)\ **Post date:** [September 24, 2026, 2:23pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/134 "2026-09-24T14:23:11Z")
@Mjd26 ~~Hi, the above is the unified response to the current issue. I understand not all users agree with the assessment on the Top Cover fit. I recommend contacting our technical support team directly for further assistance. Your concern is valid and you’ve shared plenty of relevant details. I hope you can reach out to the technical support team so they can conduct a full review and find a suitable resolution.~~ Updated(2026.10.8): Please check **[post #181](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/181)** for the latest information. > [@](#): > > Hi everyone, thank you for your continued feedback and patience. I also want to sincerely apologize for editing some of my previous replies in this thread without clearly explaining the changes at the time. Instead of quietly editing those replies, I should have kept the original information and added a clear follow-up when the plans changed or were clarified. That was the wrong way to handle the communication. We have now updated our Wiki with the latest information on the Top Cover seating c… I’ll also keep updating progress and next steps for this matter in the following topic. [U1 Top Cover Seating: Update and Improvement Plan](https://forum.snapmaker.com/t/u1-top-cover-seating-update-and-improvement-plan/43524) > [@](#): > > Hi Snapmaker U1 owners, We’ve seen your recent feedback regarding the seating of the U1 Top Cover, and we’d like to share an update on what we’ve learned and we’re doing to improve the experience. First, thank you to everyone who has taken the time to share your experience and feedback with us. We’ve reviewed the reported situation and have also updated our Wiki to provide a clearer explanation and the latest improvements. For the full details, please see our updated Wiki: [Top Cover Seating:…](https://wiki.snapmaker.com/en/resource_hub/top_cover_seating) Best regards, ---
**Author:** ![tomini](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/tomini/32/36536_2.png) [@tomini](https://forum.snapmaker.com/u/tomini)\ **Post date:** [September 24, 2026, 2:23pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/135 "2026-09-24T14:23:16Z")
@Zoe_M thank you for the answer. Three points are still open. 1. Which statements were inaccurate? The removed text includes: the mold revision project (#38, #73), the foam going from 3mm to 5mm after the beta (#73), “full responsibility” (#94, #116), the invitation to request returns and replacement parts (#116), and new orders shipping the original design (#82). 2. Does a mold revision project exist? If so, when, and will owners of the original-design cover get a revised cover at no cost? If not, please say so in a dated post. 3. Could you post a dated note in this thread listing the withdrawn statements? An edited post shows only a small pencil icon. Owners who wrote to support or made purchase decisions based on the earlier text have no way to tell. ---
**Author:** ![Zoe\_M](https://avatars.discourse-cdn.com/v4/letter/z/8491ac/32.png) [@Zoe\_M](https://forum.snapmaker.com/u/Zoe_M)\ **Post date:** [September 24, 2026, 2:25pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/136 "2026-09-24T14:25:52Z")
why?🥹 Is it too formal ---
**Author:** ![CrazyIvan](https://avatars.discourse-cdn.com/v4/letter/c/7bcc69/32.png) [@CrazyIvan](https://forum.snapmaker.com/u/CrazyIvan)\ **Post date:** [September 24, 2026, 3:41pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/137 "2026-09-24T15:41:00Z")
Perhaps this is the reason for the mould revision. We have little to go on. ---
**Author:** ![MAGNAC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/magnac/32/24771_2.png) [@MAGNAC](https://forum.snapmaker.com/u/MAGNAC)\ **Post date:** [September 24, 2026, 4:16pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/138 "2026-09-24T16:16:16Z")
Hello everyone, I feel uneasy about Snapmaker. I was the one who started the first post explaining that I had a problem with the fit of the upper cover on my U1. I quickly modeled a support to fix the issue, and some of you have printed this solution. I even have people who printed these 4 parts in PLA instead of TPU as I recommended, and it works. Since then, Snapmaker has also uploaded suitable parts. I am surprised that there is now controversy around this topic, namely whether it is Snapmaker’s fault or not. Some are asking for a refund, others want a corrected version for sure. Everyone has their own reasons, right or wrong, and I am not here to judge. On my side, it works with my modification; the cover no longer moves and does not risk slipping during use of the U1. I consider it settled. It’s not rocket science to print something to “improve” it; in fact, that’s one of the things you do with your printer. Others might say the product is not fully refined! These are growing pains, and I remind you that it was originally a Kickstarter campaign, with all the defects that entails. Moreover, the cover existed; it could easily never have seen the light of day. For me, this matter is closed. The cover is functional, end of story! Have a wonderful end of the day, everyone. My best regards to all the Snapmaker staff! I will test the French version of the U1’s firmware V2. Stéphane ---
**Author:** ![Manfredo52](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@Manfredo52](https://forum.snapmaker.com/u/Manfredo52)\ **Post date:** [September 24, 2026, 4:21pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/139 "2026-09-24T16:21:46Z")
When I received the cover, I installed it and never experienced any problem. Only when I read this post, I downloaded the small file from MAGNAC, just to be save, but still,did not experience any problem. Anyhow. Since Snapmaker has delivered their own version of additional tool to secure the cover, subject should now be considered closed. ---
**Author:** ![ColdCoffee](https://avatars.discourse-cdn.com/v4/letter/c/b9e5f3/32.png) [@ColdCoffee](https://forum.snapmaker.com/u/ColdCoffee)\ **Post date:** [September 24, 2026, 4:26pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/140 "2026-09-24T16:26:01Z")
OK I give up, I can see this just playing tennis between those whom are happy and those whom are not - So I’m going to mute this thread now before the next round starts Not my circus, not my clowns… ---
**Author:** ![Rocklou](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/rocklou/32/34921_2.png) [@Rocklou](https://forum.snapmaker.com/u/Rocklou)\ **Post date:** [September 24, 2026, 5:07pm UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/141 "2026-09-24T17:07:00Z")
Think its 2 problems not just one, the foam making it leave the whole and the plastic deformed on certain corners that constatly pops the cover up.. I wonder wich ones ill get on mine, i will report once mine arrives, and i assure if mine arrives with any of those issues ill be returning it ---
**Author:** ![Cylonmode](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/cylonmode/32/30291_2.png) [@Cylonmode](https://forum.snapmaker.com/u/Cylonmode)\ **Post date:** [September 25, 2026, 2:20am UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/142 "2026-09-25T02:20:47Z")
I don’t really understand all the back and forth either but I do appreciate those who are holding Snapmaker accountable for a simple engineering oversight that could have easily been detected with proper QC. Simply waving it off with a 3d printed fix does nothing for preventing issues in the future… > [@MAGNAC](#): > > The cover is functional, end of story! That is not the end of the story for people having overheating issues with PLA… ---
**Author:** ![RWerksman](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/rwerksman/32/36556_2.png) [@RWerksman](https://forum.snapmaker.com/u/RWerksman)\ **Post date:** [September 25, 2026, 3:34am UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/143 "2026-09-25T03:34:18Z")
Just wanted to chime in adding that my cover also does not fit the rubber mounts. It does however fit over the top of the unit, barely. I have a second one on order, which is not shipped yet. I’ll confirm fitment whenever I receive that one, if I don’t cancel it prior. ---
**Author:** ![Robertsz49](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/robertsz49/32/36790_2.png) [@Robertsz49](https://forum.snapmaker.com/u/Robertsz49)\ **Post date:** [September 25, 2026, 4:59am UTC](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062/144 "2026-09-25T04:59:20Z")
I would simply like to suggest to the administrators—and to all of us—that we split this topic into two parts: 1./ Legal and theoretical questions regarding general quality, warranty, and defective performance; 2./ And technical questions regarding the printing process itself—e.g., printing PLA in an enclosed chamber, overheating, control systems, etc. The topic is starting to become difficult to follow—at least for me. [Previous page](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062.md?page=6) [Next page](https://forum.snapmaker.com/t/u1-top-cover-wont-stay-in-place/43062.md?page=8)