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Can't get anything to stick  

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oobedoob
(@oobedoob)
Active Member
Can't get anything to stick

I just finished building my MK3S+. Ran all the test and everything came up fine, now when I go to print I'm not getting a good first layer and it will hardly stick by the time it starts on the second.

I've run multiple first layer calibrations, went as high as 1.40, but realized that was too close as it was pushing the first layer around. I'm now at .950. I was still having issue with the first layer so I flipped the sheet around and it was working a little better and got past the first layer, but after the second it came off the bed.

Any suggestions? I'm using the textured metal sheet and the PLA that came with the printer.

Best Answer by oobedoob:

Switched to the smooth sheet and the PLA is sticking down and I'm not having any issue with adhesion anymore. Might look into the textured sheet and PLA with a few other brands later on.

Respondido : 14/09/2022 8:28 pm
P.O.
 P.O.
(@p-o)
Eminent Member
RE:

Hello,
PLA is supposed to be printed on the smooth sheet.

See the same issue as yours, here experienced on the Mini (@2:35) :

Esta publicación ha sido modificada el hace 2 years 2 veces por P.O.
Respondido : 14/09/2022 9:16 pm
jsw
 jsw
(@jsw)
Famed Member
RE: Can't get anything to stick

I've done countless PLA prints on the Prusa textured build plate with very good results, including with the Prusa/FilamentPM silver-gray PLA sample that comes with each new Prusa printer.

For the textured plate, I always set the Z calibration right to the point that the 'brush strokes' in the square 'flag' just disappear into the pattern created by the textured surface.  This point will also result in nice square corners, with no pulling, of the zig-zag lines.

I won't admonish you to Clean Your Plate And Clean It My Way (tm), but the textured plate does need to be Really Most Sincerely Clean (tm) for things to properly stick.

One thing that can really help with adhesion issues is the use of an adhesion booster, such as Layerneer or the alternatives discussed in the recent 'What is in Layerneer' thread.  A little goes a long way and this works very well with the Prusa textured build plate.

There's been some anecdotal evidence over the years that the Prusa textured build plates adhere better after 'seasoning' with regular use, such as a BBQ grill works better after said seasoning.  😉

There's also some anecdotal evidence that some Prusa textured build plates, possibly of different production runs or manufacturers, have much better adhesion than others.  Mine (apparently one of the 'good' ones) has a production code WA-15 in the upper right.

To summarize, 1. Absolutely clean build plate. 2. Spot-on Z calibration. 3. Adhesion booster if needed.

Respondido : 14/09/2022 11:36 pm
P.O.
 P.O.
(@p-o)
Eminent Member
RE:

Sure - but none of these recommendations negate the fact that the official instructions do recommend the smooth sheet for PLA - see pages 42 and 43 of the manual for the Mini for instance. That's especially relevant  if this could allow the OP to *not* have to coat his print plate with sticky stuff ...

So to summarize :

0 - consider using the recommended plate 😀

Esta publicación ha sido modificada el hace 2 years 4 veces por P.O.
Respondido : 15/09/2022 12:35 am
jsw
 jsw
(@jsw)
Famed Member
RE: Can't get anything to stick

I'm not gonna argue, sorry.

I'm reporting my experiences.  I am no beginner and I have very few failed prints.  I must be doing something right.

Respondido : 15/09/2022 12:42 am
oobedoob
(@oobedoob)
Active Member
Topic starter answered:
RE: Can't get anything to stick

After reading and rereading everything I somehow apparently glossed over the fact that PLA "needs" the smooth sheet 😫 

Since it's late and I'm still frustrated that spent over 3 hours trying to get anything to properly stick, I'll try printing on the smooth sheet tomorrow morning and will update then.

Respondido : 15/09/2022 3:08 am
jsw
 jsw
(@jsw)
Famed Member
RE:
Posted by: @oobedoob

After reading and rereading everything I somehow apparently glossed over the fact that PLA "needs" the smooth sheet 😫 

Since it's late and I'm still frustrated that spent over 3 hours trying to get anything to properly stick, I'll try printing on the smooth sheet tomorrow morning and will update then.

I can sincerely assure you that this is not the case.  It will most likely be easier for you to print PLA on the smooth build plate, but experience has shown that the Prusa textured plate will indeed work with PLA as well as most other filaments.

I like the texture it produces and use it frequently.  I am trying to find a similar build plate for my other printer (Ultimaker) but so far have not found a true drop-in solution.

Respondido : 15/09/2022 6:03 am
oobedoob
(@oobedoob)
Active Member
Topic starter answered:
RE: Can't get anything to stick

Switched to the smooth sheet and the PLA is sticking down and I'm not having any issue with adhesion anymore. Might look into the textured sheet and PLA with a few other brands later on.

Respondido : 15/09/2022 3:15 pm
P.O.
 P.O.
(@p-o)
Eminent Member
RE: Can't get anything to stick

Ha, that's good to hear !

Respondido : 15/09/2022 4:52 pm
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