# Prints not sticking to build platform **URL:** \ **Category:** Form 4/B/L\ **Created:** [July 20, 2026, 5:08pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650 "2026-07-20T17:08:31Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [July 20, 2026, 5:08pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/1 "2026-07-20T17:08:31Z")
replaced the LPU and calibrated the z-axis using the little corner discs (done this a few times already). now the first layers of the supports base is not sticking to the buildplate and the prints are failing ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [July 20, 2026, 6:38pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/2 "2026-07-20T18:38:39Z")
just tried a new resin tank, and still failing as before ---
**Author:** ![MattRForerunner](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/mattrforerunner/32/20355_2.png) [@MattRForerunner](https://forum.formlabs.com/u/MattRForerunner)\ **Post date:** [July 20, 2026, 6:45pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/3 "2026-07-20T18:45:54Z")
did you previously print using silicone ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [July 20, 2026, 6:57pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/4 "2026-07-20T18:57:27Z")
This printer has only been using Tough 1500 v2 ---
**Author:** ![MattRForerunner](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/mattrforerunner/32/20355_2.png) [@MattRForerunner](https://forum.formlabs.com/u/MattRForerunner)\ **Post date:** [July 20, 2026, 7:21pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/5 "2026-07-20T19:21:09Z")
Double check that everything is good with the clamp pressure on the build platform like when you lock it in place make sure it doesnt move at all ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [July 20, 2026, 7:41pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/6 "2026-07-20T19:41:44Z")
When it’s locked in, it’s very firm and rigid ---
**Author:** ![MattRForerunner](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/mattrforerunner/32/20355_2.png) [@MattRForerunner](https://forum.formlabs.com/u/MattRForerunner)\ **Post date:** [July 20, 2026, 7:49pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/7 "2026-07-20T19:49:04Z")
do you have multiple build platforms ---
**Author:** ![leonhart88](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/leonhart88/32/19153_2.png) [@leonhart88](https://forum.formlabs.com/u/leonhart88)\ **Post date:** [July 21, 2026, 6:46am UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/8 "2026-07-21T06:46:38Z")
You might not have done the BP alignment properly if it wasn’t loosened and dropped all the way to the LPU. Or you need to do z fine tuning in the printer settings. ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [July 21, 2026, 11:09am UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/9 "2026-07-21T11:09:56Z")
doing fine tuning of z-axis now. started with -.02um, still failed with coming off the buildplate, but it did print about 10 layers before detaching from buildplate. ---
**Author:** ![jessbuck](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/jessbuck/32/21430_2.png) [@jessbuck](https://forum.formlabs.com/u/jessbuck)\ **Post date:** [July 21, 2026, 12:55pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/10 "2026-07-21T12:55:24Z")
@Lantech50 I’m sorry to hear that you’re having issues with your prints not adhering to the build platform. You’ve taken good troubleshooting steps so far. I’d fine-tune the z-axis one more time. If that doesn’t resolve it, please open a [support case](https://formlabs.com/support/) so that we can dig into the logs and source of the issue. ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [July 21, 2026, 6:40pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/11 "2026-07-21T18:40:03Z")
Already submitted ticket from the website and the printer itself. uploaded the logs, but didn’t send a picture, nothing to show on picture except a blank buildplate. ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [July 21, 2026, 7:06pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/12 "2026-07-21T19:06:01Z")
We replaced LCD screen around June 17th. Had right at 20 jobs sent to the printer without any issues (about 40 various parts). Starting July 17th, all print jobs (about 13) failed to adhere to the build plate ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [July 21, 2026, 7:06pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/13 "2026-07-21T19:06:36Z")
Tried z offset at -50um, -80um and had a few small parts stick to the build plate, but others detached (checked it around 10 layers printed) Thouroughly cleaned build plate again, printed cleaning sheet and cleaned LCD releasee texture. Re-aligned build plate to LPU. Prints detached again within 5-10 layers. Set z-offset to -100um, trying print again ---
**Author:** ![ChristopherBarr](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/christopherbarr/32/645_2.png) [@ChristopherBarr](https://forum.formlabs.com/u/ChristopherBarr)\ **Post date:** [July 21, 2026, 10:08pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/14 "2026-07-21T22:08:30Z")
you didn’t mention (that I saw above) whether this was a container material that had already printed fine. could it be material-batch related? have you tried a completely new container of material? ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [August 3, 2026, 1:29pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/15 "2026-08-03T13:29:03Z")
same batch of resin that had been printing fine. update: with z-offset set at -100um, appears to be working ok now. currently on hour 16 of a 21 hour print, and things appear to be fine. don’t understand ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [August 3, 2026, 1:31pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/16 "2026-08-03T13:31:29Z")
got about 5 jobs printing successfully with the z-offset at -100. now this morning, the beginning of the print jobs are detaching from the build surface again. had opened a support ticket, but they keep requesting pictures of the failed prints…pictures, of an empty build plate. doesn’t go much further after that. ---
**Author:** ![barreax2](https://avatars.discourse-cdn.com/v4/letter/b/c89c15/32.png) [@barreax2](https://forum.formlabs.com/u/barreax2)\ **Post date:** [August 3, 2026, 4:58pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/17 "2026-08-03T16:58:53Z")
Are you cleaning the build platform in between prints? I’ve noticed with the tough series resins that sometimes a film builds up which could cause issues. ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [August 17, 2026, 2:29pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/18 "2026-08-17T14:29:54Z")
we clean it with alcohol after every print ---
**Author:** ![Lantech50](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/lantech50/32/20390_2.png) [@Lantech50](https://forum.formlabs.com/u/Lantech50)\ **Post date:** [September 9, 2026, 11:16am UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/19 "2026-09-09T11:16:27Z")
update…was printing fine at -110um, now the latest print never attached to build plate (or pulled off)…trying it at -120um. ---
**Author:** ![BurchOrtho](https://avatars.discourse-cdn.com/v4/letter/b/d78d45/32.png) [@BurchOrtho](https://forum.formlabs.com/u/BurchOrtho)\ **Post date:** [September 9, 2026, 12:40pm UTC](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650/20 "2026-09-09T12:40:26Z")
You have something that is seriously wrong if you are having to redo the z-alignment over and over again at different values. Either you guys are doing something that you don’t realize is affecting the print, like old resin batches or maybe some sort of custom ventilation/temp control or maybe just bumping the table too hard once in a while, idk. But something is definitely wrong and I have hard time believing it’s the printer constantly needing its Z height values tuned How does the threaded shaft look in the back? Any scratches in the metal or darkened areas where it looks like it might be burning? [Next page](https://forum.formlabs.com/t/prints-not-sticking-to-build-platform/46650.md?page=2)