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Problems attaching the screen to the prusa mini+  

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zapcome
(@zapcome)
New Member
Problems attaching the screen to the prusa mini+

Hello,

I received my prusa mini+ a couple of days ago and while putting it together, i noticed the screen wasnt really fitting the part on the aluminium extrusions... allowing the screen to move back and forth, no matter how tight the screw is. Even the hole for the screw is square?... which looks a bit weird. Has anyone had this problem before? is that what the screw hole is meant to look like?

How do you guys get your screen to not move back and forth? attaching a couple of images

 

Posted : 29/03/2021 9:10 am
Malabor liked
Scott Frazer
(@scott-frazer)
Active Member
RE: Problems attaching the screen to the prusa mini+

I had a similar problem. There were 2 screws I could have used to connect it, a 12mm and a 20mm M3. The 12mm didn't feel like it was getting any purchase and the 20mm felt like it was hitting bottom before the screen was held tight in place.

I believe some people simply applied more pressure to the 20mm and got it to thread itself deeper and hold the screen tight.

I have a stash of various sized M3 screws, so I just split the difference and used a 16mm M3 screw instead. 

Posted : 29/03/2021 12:34 pm
Jimbo
(@jimbo-3)
New Member
RE: Problems attaching the screen to the prusa mini+

Not sure if this was proper, I decided the raised hex piece was preventing the wedges from locking into the base also making the screw too short. So I sanded the raised hex flat and used a longer screw. Works great.

Posted : 30/03/2021 4:39 pm
Daryl
(@daryl-2)
Trusted Member
RE: Problems attaching the screen to the prusa mini+

Definitely need to use the M3x20 screw.

https://help.prusa3d.com/en/guide/building-your-mini_6384       Step 20

There are two versions of the LCD cover and each requires a different length of the screw:
New version: The LCD cover has a hexagonal protrusion on the side. Please, prepare and use the M3x20 screw.
Old version: The LCD cover has a circular protrusion on the side. Please, prepare and use the M3x12 screw.
If you are missing the M3x20 screw in the bag, please use one from the SPARE bag.
Posted : 30/03/2021 4:52 pm
MysDawg liked
Jimbo
(@jimbo-3)
New Member
RE: Problems attaching the screen to the prusa mini+

@daryl-2

Now you tell me! (^_^)

Posted : 30/03/2021 4:57 pm
Daryl
(@daryl-2)
Trusted Member
RE: Problems attaching the screen to the prusa mini+

@jimbo-3

You can now enjoy printing your own replacement cover in any color you want!

Posted : 30/03/2021 5:28 pm
Jimbo
(@jimbo-3)
New Member
RE: Problems attaching the screen to the prusa mini+

@daryl-2

It's ok as is, but just curious why the raised hex? Was there an issue with the tabs on the screen mating with the indented radial arms in mount?

Posted : 30/03/2021 5:49 pm
Malabor
(@malabor)
Eminent Member
RE: Problems attaching the screen to the prusa mini+

I've got this same problem.   The long screw is "too long" and the "short screw" is too short. :-\   I need that Goldilocks screw that is Juuuuust right.   OR...if anyone has a file to print a new one with the correct mount that actually mates correctly?

Posted : 26/04/2021 3:30 pm
galvanization
(@galvanization)
Active Member
RE: Problems attaching the screen to the prusa mini+
Posted by: @scott-frazer

I had a similar problem. There were 2 screws I could have used to connect it, a 12mm and a 20mm M3. The 12mm didn't feel like it was getting any purchase and the 20mm felt like it was hitting bottom before the screen was held tight in place.

I believe some people simply applied more pressure to the 20mm and got it to thread itself deeper and hold the screen tight.

I have a stash of various sized M3 screws, so I just split the difference and used a 16mm M3 screw instead. 

+1 on the 16mm M3. Just got my Mini+ (partially assembled) today and the 20mm was impossible without brute force. 16mm and a washer is just right! 

Posted : 15/05/2021 2:47 am
cwbullet
(@cwbullet)
RE: Problems attaching the screen to the prusa mini+

I concur with 16mm.  I had to rebuild one of the printers a few weeks ago to upgrade to the +.  I too struggled till I used a different screw length.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 16/05/2021 11:20 am
Amafi liked
mrstoned
(@mrstoned)
Reputable Member
RE: Problems attaching the screen to the prusa mini+

I had som similar problems when assembling my kit, i used a 12mm to pre-cut the threads on the injectionmolded plate (i screw in a few threads, then back out and repeat until the whole 12mm was flush with the molded part.

Then i could use the 20mm screw and put the lcd in. I opted to not tighten the lcd fully so i have some sloppiness in it by choice. It stays in place but can be moved if needed.

Tevo Nereus.
Prusa Mini+ kit (4.3.4). BondTech extruder.

Posted : 16/05/2021 1:44 pm
Aphaitas
(@aphaitas)
Active Member
RE: Problems attaching the screen to the prusa mini+

I used the "newer" version with the 20mm screw (paper manual was outdated for this),
but added an M3 washer to not break my allen key...
It's not super tight now, but tight enough to hold it in place when I'm using it.

Posted : 19/05/2021 10:17 am
Amafi
(@amafi)
New Member
RE: Problems attaching the screen to the prusa mini+

Just putting mine together now, and the m3x20 was very tight with the screen assembly still very loose. Tried a m3x16 with a washer and got it installed with no issues.

Posted by: @cwbullet

I concur with 16mm.  I had to rebuild one of the printers a few weeks ago to upgrade to the +.  I too struggled till I used a different screw length.  

 

Posted : 01/02/2022 3:23 pm
Chris Laudermilk
(@chris-laudermilk)
Estimable Member
RE: Problems attaching the screen to the prusa mini+

I used the 20mm as directed by the instructions. But, I followed suggestions in the comments on the step and threaded the screw in as far as I could without the LCD screen first. Then removed the screw and attached the screen. It was still tight, but doable. I've done it twice now after adding the backing panel mod; still tight but it's on there and works.

Mini+ (kit) - Revo Micro

Posted : 02/02/2022 2:43 pm
MysDawg liked
languer
(@languer)
Trusted Member
RE: Problems attaching the screen to the prusa mini+

Read the guide, struggled a bit with M3x20, read the comments, moved to M3x16 and that was that.

Posted : 03/02/2022 5:49 am
Matthewd5
(@matthewd5)
Active Member
RE: Problems attaching the screen to the prusa mini+

I had exactly the same problem, i'm planning to acquire a 16mm screw this week

matthew

Posted : 14/02/2022 4:20 pm
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