# Form 4/B/L **URL:** https://forum.formlabs.com/c/support-troubleshooting/form-4-4b/75.md?page=2 [Latest](https://forum.formlabs.com/latest.md) · [Categories](https://forum.formlabs.com/categories.md) · [Tags](https://forum.formlabs.com/tags.md) **Page:** 3 --- ## [Inconsistent Illumination During Backlight-Only Test on Form 4](https://forum.formlabs.com/t/inconsistent-illumination-during-backlight-only-test-on-form-4/44502)
**Author:** [@Nihal\_Drotsa](https://forum.formlabs.com/u/Nihal_Drotsa)\ **Replies:** 1\ **Last updated:** [June 19, 2025, 11:47am UTC](https://forum.formlabs.com/t/inconsistent-illumination-during-backlight-only-test-on-form-4/44502 "2025-06-19T11:47:10Z")
We’ve been facing a persistent and unresolved issue with our Form 4 printer related to inconsistent illumination during the backlight-only optical test. What We’re Seeing: Structured bright/dark circular zones appearin… --- ## [Adaptive Layer Thickness - Form 4](https://forum.formlabs.com/t/adaptive-layer-thickness-form-4/44622)
**Author:** [@cwharris](https://forum.formlabs.com/u/cwharris)\ **Replies:** 2\ **Last updated:** [June 10, 2025, 10:00pm UTC](https://forum.formlabs.com/t/adaptive-layer-thickness-form-4/44622 "2025-06-10T22:00:22Z")
I’m not able to enable adaptive layer thickness for any material in the latest PreForm (3.48.0.523) for my Form 4, and I can’t find any information regarding whether or not it’s supported. Specifically I’m trying to ena… --- ## [Wash L Feet and Exhaust](https://forum.formlabs.com/t/wash-l-feet-and-exhaust/44592)
**Author:** [@Grandmaison](https://forum.formlabs.com/u/Grandmaison)\ **Replies:** 1\ **Last updated:** [June 5, 2025, 2:42pm UTC](https://forum.formlabs.com/t/wash-l-feet-and-exhaust/44592 "2025-06-05T14:42:02Z")
Making plans to accommodate 2 Wash L units in a classroom space and have 2 questions. What kind of feet do they have? I’d like to either replace them with heavy duty urethane casters, or set the unit on a low profile d… --- ## [Printing malfunction](https://forum.formlabs.com/t/printing-malfunction/44454)
**Author:** [@maizi](https://forum.formlabs.com/u/maizi)\ **Replies:** 19\ **Last updated:** [June 2, 2025, 4:45pm UTC](https://forum.formlabs.com/t/printing-malfunction/44454 "2025-06-02T16:45:48Z")
The hole is not round, with resin accumulation and stripes --- ## [Angle resin stacking](https://forum.formlabs.com/t/angle-resin-stacking/44517)
**Author:** [@maizi](https://forum.formlabs.com/u/maizi)\ **Replies:** 22\ **Last updated:** [June 2, 2025, 1:42pm UTC](https://forum.formlabs.com/t/angle-resin-stacking/44517 "2025-06-02T13:42:00Z")
May I ask if there is a solution? The accumulation of angles is causing me a lot of trouble and difficult to repair --- ## [Form 4 "printer in use", essentially bricked](https://forum.formlabs.com/t/form-4-printer-in-use-essentially-bricked/44511)
**Author:** [@aag](https://forum.formlabs.com/u/aag)\ **Replies:** 1\ **Last updated:** [May 28, 2025, 3:15pm UTC](https://forum.formlabs.com/t/form-4-printer-in-use-essentially-bricked/44511 "2025-05-28T15:15:22Z")
is there a way to abort a print? It’s been “preparing” for 5 hrs. When I switch off and back on, it goes again into preparing mode. Can I enter the printer by SSH and reset it? I cannot even do a factory reset because… --- ## [Best orientation for dimensional accuracy?](https://forum.formlabs.com/t/best-orientation-for-dimensional-accuracy/38972)
**Author:** [@Friedl\_1977](https://forum.formlabs.com/u/Friedl_1977)\ **Replies:** 76\ **Last updated:** [February 18, 2025, 10:15am UTC](https://forum.formlabs.com/t/best-orientation-for-dimensional-accuracy/38972 "2025-02-18T10:15:33Z")
Hi - I am as new as you can be to SLA printing, so my apologies in advance for the trivial question. I recently bought a Form4 printer, unboxed it and immediately proceeded to print an Astronaut Phil model, something I… --- ## [Problem with printer 3D - Form 4B](https://forum.formlabs.com/t/problem-with-printer-3d-form-4b/40419)
**Author:** [@eguerra](https://forum.formlabs.com/u/eguerra)\ **Replies:** 10\ **Last updated:** [May 15, 2025, 2:27pm UTC](https://forum.formlabs.com/t/problem-with-printer-3d-form-4b/40419 "2025-05-15T14:27:29Z")
Hello, everyone, I recently purchased a Form 4B and since then I’ve been having problems with the prints. Normally, I used to operate a FormLabs 3D printer, the Form 3B, so I already have some experience with this print… --- ## [Puerta de la FORM 4 / Form 4 Cover](https://forum.formlabs.com/t/puerta-de-la-form-4-form-4-cover/44182)
**Author:** [@Joguets](https://forum.formlabs.com/u/Joguets)\ **Replies:** 7\ **Last updated:** [May 5, 2025, 9:59pm UTC](https://forum.formlabs.com/t/puerta-de-la-form-4-form-4-cover/44182 "2025-05-05T21:59:24Z")
¿A Alguien le pasa como a mi, que la puerta de la Form 4 al abrir no se le queda abierta? Se cae por su peso, y la impresora es nueva tiene 5 meses escasos. ¿Hay alguna forma de arreglarlo? --- ## [Clear v5 prints failing](https://forum.formlabs.com/t/clear-v5-prints-failing/44298)
**Author:** [@mooreancad](https://forum.formlabs.com/u/mooreancad)\ **Replies:** 0\ **Last updated:** [May 2, 2025, 10:45am UTC](https://forum.formlabs.com/t/clear-v5-prints-failing/44298 "2025-05-02T10:45:08Z")
This is a new Form4 , we also have a Fuse 1 and a Form 2, and we’ve more to unbox once we get the room set up properly. I’ve had a couple of prints fail like this on me now, where layers seem to detach and affect everyth… --- ## [Form 4 Durable V2.1 giving debris on build plate error even after cleaning](https://forum.formlabs.com/t/form-4-durable-v2-1-giving-debris-on-build-plate-error-even-after-cleaning/43654)
**Author:** [@dhudson55](https://forum.formlabs.com/u/dhudson55)\ **Replies:** 8\ **Last updated:** [May 1, 2025, 5:19pm UTC](https://forum.formlabs.com/t/form-4-durable-v2-1-giving-debris-on-build-plate-error-even-after-cleaning/43654 "2025-05-01T17:19:49Z")
Please help. I’m having an issue where no matter what I do or clean, when I use my durable v2.1 tank it always gives the debris on build plate/in tank error. I’ve made sure the build plate is clean and the tank is clear … --- ## [White v5 delaminating mid print](https://forum.formlabs.com/t/white-v5-delaminating-mid-print/44273)
**Author:** [@mctech](https://forum.formlabs.com/u/mctech)\ **Replies:** 1\ **Last updated:** [April 29, 2025, 6:03pm UTC](https://forum.formlabs.com/t/white-v5-delaminating-mid-print/44273 "2025-04-29T18:03:57Z")
We were printing some dental models in our lab in White v5 and had some random delamination issues, but not in any cupping areas or even detailed areas. Same print failed twice, even with a tank cleaning and cleaning sh… --- ## [Cupping For Through Hole](https://forum.formlabs.com/t/cupping-for-through-hole/44054)
**Author:** [@jpuzzo](https://forum.formlabs.com/u/jpuzzo)\ **Replies:** 15\ **Last updated:** [April 25, 2025, 3:04pm UTC](https://forum.formlabs.com/t/cupping-for-through-hole/44054 "2025-04-25T15:04:53Z")
I have the following part that contains a throgh hole from top to bottom. I would really love to NOT have to rotate this part as I want the base to sit flat on the build plate. The software is showing cupping but This is… --- ## [Tough 1500 V2 Safe/Slower settings](https://forum.formlabs.com/t/tough-1500-v2-safe-slower-settings/44198)
**Author:** [@TappAirsoft](https://forum.formlabs.com/u/TappAirsoft)\ **Replies:** 1\ **Last updated:** [April 22, 2025, 4:54pm UTC](https://forum.formlabs.com/t/tough-1500-v2-safe-slower-settings/44198 "2025-04-22T16:54:19Z")
New to SLA printing and all the custom settings. Trying to print in the new Tough 1500 V2 but enough large surface area and something always breaks. Been able to mitigate this with slower peel speeds, but don’t know eno… --- ## [Form Wash Gen 2 platform mounts falling off](https://forum.formlabs.com/t/form-wash-gen-2-platform-mounts-falling-off/43083)
**Author:** [@ThomasP](https://forum.formlabs.com/u/ThomasP)\ **Replies:** 3\ **Last updated:** [April 18, 2025, 6:01pm UTC](https://forum.formlabs.com/t/form-wash-gen-2-platform-mounts-falling-off/43083 "2025-04-18T18:01:22Z")
While my Form 4 has been working great so far, I have been having some problems with the form wash when raising and lowering the prints into the wash. The Gen 2 wash includes really great platform mount arms to hold the … --- ## [Form 4 Issue with sending print jobs to printer on network, printer is aborting and debris messages](https://forum.formlabs.com/t/form-4-issue-with-sending-print-jobs-to-printer-on-network-printer-is-aborting-and-debris-messages/44095)
**Author:** [@npilicencing](https://forum.formlabs.com/u/npilicencing)\ **Replies:** 5\ **Last updated:** [April 11, 2025, 1:18pm UTC](https://forum.formlabs.com/t/form-4-issue-with-sending-print-jobs-to-printer-on-network-printer-is-aborting-and-debris-messages/44095 "2025-04-11T13:18:18Z")
I have been able to send two print jobs to the printer so far, but these were not without issue. On the first use of the printer I was unable to send a print job. The printer would show the file was uploading but then o… --- ## [Holes in the surface of the print](https://forum.formlabs.com/t/holes-in-the-surface-of-the-print/43396)
**Author:** [@charger\_01](https://forum.formlabs.com/u/charger_01)\ **Replies:** 15\ **Last updated:** [April 9, 2025, 3:05pm UTC](https://forum.formlabs.com/t/holes-in-the-surface-of-the-print/43396 "2025-04-09T15:05:05Z")
Hello, dear Formlabs forum! Since yesterday I have owned a Form4! Now I have the problem that the surface of my print is not smooth, but has small holes on the surface on the top of the model! I don’t have this problem o… --- ## [Tiny holes in prints](https://forum.formlabs.com/t/tiny-holes-in-prints/40498)
**Author:** [@Pixelbudah](https://forum.formlabs.com/u/Pixelbudah)\ **Replies:** 4\ **Last updated:** [April 9, 2025, 3:02pm UTC](https://forum.formlabs.com/t/tiny-holes-in-prints/40498 "2025-04-09T15:02:43Z")
I just received my Form 4 and I ran my first print yesterday and there are a couple of things that I want to discuss about this printer, but the first thing I would like to know is why am I getting pin holes in my prints… --- ## [PreForm Print Time estimation in Form4](https://forum.formlabs.com/t/preform-print-time-estimation-in-form4/43858)
**Author:** [@JCaeiroAntunes](https://forum.formlabs.com/u/JCaeiroAntunes)\ **Replies:** 0\ **Last updated:** [March 14, 2025, 12:31pm UTC](https://forum.formlabs.com/t/preform-print-time-estimation-in-form4/43858 "2025-03-14T12:31:15Z")
Can’t understand Print Time estimation, given this example: I always want fast prints with minimum spent resin, when optimizing the drawings for SLA I normally orient, draw and build the part for a minimum number … --- ## [Material change properties after painting process](https://forum.formlabs.com/t/material-change-properties-after-painting-process/43822)
**Author:** [@iacopo](https://forum.formlabs.com/u/iacopo)\ **Replies:** 7\ **Last updated:** [March 13, 2025, 5:49pm UTC](https://forum.formlabs.com/t/material-change-properties-after-painting-process/43822 "2025-03-13T17:49:43Z")
Hi, i’ve noticed that grey V5, black and durable become “glassy” and fragile after the painting process. This process invole putting the parts inside a hoven 1 hour at 50°C for every layer of painting (usually 2). So 1… --- ## [Alignment on the Form 4, "optimal" angles?](https://forum.formlabs.com/t/alignment-on-the-form-4-optimal-angles/43448)
**Author:** [@charger\_01](https://forum.formlabs.com/u/charger_01)\ **Replies:** 12\ **Last updated:** [February 23, 2025, 10:46pm UTC](https://forum.formlabs.com/t/alignment-on-the-form-4-optimal-angles/43448 "2025-02-23T22:46:36Z")
Hello, how would you basically position this body? I am not yet satisfied with the printing result. Either I have holes in the surface, perhaps angles of inclination that are too shallow, or I have stripes, or even steps… --- ## [Underside texture issues](https://forum.formlabs.com/t/underside-texture-issues/43690)
**Author:** [@jwfortx](https://forum.formlabs.com/u/jwfortx)\ **Replies:** 1\ **Last updated:** [February 20, 2025, 9:17pm UTC](https://forum.formlabs.com/t/underside-texture-issues/43690 "2025-02-20T21:17:55Z")
We’re having some strange issues with the texture on the underside of flat surfaces on our Form 4L. This surface was printed at ~45 degrees: But we see this issue on surfaces printed flat too. I understand that ideal… --- ## [Form 4 pausing print because the resin bottle is empty, but resin in the tank](https://forum.formlabs.com/t/form-4-pausing-print-because-the-resin-bottle-is-empty-but-resin-in-the-tank/43475)
**Author:** [@adamJCI](https://forum.formlabs.com/u/adamJCI)\ **Replies:** 3\ **Last updated:** [February 4, 2025, 1:33pm UTC](https://forum.formlabs.com/t/form-4-pausing-print-because-the-resin-bottle-is-empty-but-resin-in-the-tank/43475 "2025-02-04T13:33:03Z")
Hi I have a form 4 at work. i often start a print at night before going home or remotely then come in at lunch. Sometimes, when i put a new resin cartridge in, and i start a large print, , by the end of the print, the … --- ## [Very loud Fan noise](https://forum.formlabs.com/t/very-loud-fan-noise/43438)
**Author:** [@clemlaplace](https://forum.formlabs.com/u/clemlaplace)\ **Replies:** 2\ **Last updated:** [January 30, 2025, 5:06pm UTC](https://forum.formlabs.com/t/very-loud-fan-noise/43438 "2025-01-30T17:06:28Z")
Hi, We just acquired a form 4B after having a form 3B for some years. Since our first print the printer has been making a very loud fan noise during the entire print time. Is this the expected behavior ? Has anyone ex… --- ## [Where is the category for Form Cure & Form Wash?](https://forum.formlabs.com/t/where-is-the-category-for-form-cure-form-wash/40742)
**Author:** [@FrankChisel](https://forum.formlabs.com/u/FrankChisel)\ **Replies:** 0\ **Last updated:** [November 28, 2024, 12:51pm UTC](https://forum.formlabs.com/t/where-is-the-category-for-form-cure-form-wash/40742 "2024-11-28T12:51:02Z")
I have some trouble with my Cure regarding firmware updating. Can I discuss the probems in this forum category? --- ## [Lid problems](https://forum.formlabs.com/t/lid-problems/40262)
**Author:** [@Robert\_Allbritt](https://forum.formlabs.com/u/Robert_Allbritt)\ **Replies:** 4\ **Last updated:** [October 28, 2024, 11:52am UTC](https://forum.formlabs.com/t/lid-problems/40262 "2024-10-28T11:52:13Z")
Anyone here having problems with the Form 4 lid? it sometimes does not align properly on closing - thus will not fully close. a very mild twisting action usually does the trick. the uplock spring seems to be slowly fai… --- ## [PreForm cannot update](https://forum.formlabs.com/t/preform-cannot-update/39106)
**Author:** [@whatcomdentalla](https://forum.formlabs.com/u/whatcomdentalla)\ **Replies:** 0\ **Last updated:** [September 16, 2024, 8:37pm UTC](https://forum.formlabs.com/t/preform-cannot-update/39106 "2024-09-16T20:37:55Z")
My Foem4 printers updated, but preform cannot update. It says “could not contact Omaha updater client”. Restarted computer. Uninstalled and reinstalled preform. Restarted computer again. Sent trouble ticket. Downloaded p… --- ## [Print colored opaque](https://forum.formlabs.com/t/print-colored-opaque/38784)
**Author:** [@hanshantson](https://forum.formlabs.com/u/hanshantson)\ **Replies:** 3\ **Last updated:** [August 6, 2024, 2:38pm UTC](https://forum.formlabs.com/t/print-colored-opaque/38784 "2024-08-06T14:38:06Z")
HI all, I’m new in SLA printing space (did most FDM so far), for a client I need to 3D Print in colored clear resin. Anyone experience with mixing clear resin with the color kit? As i don’t want to waste full cartridges… [Previous page](https://forum.formlabs.com/c/support-troubleshooting/form-4-4b/75.md?page=1)