Issues printing the first layer of support structures
 

Issues printing the first layer of support structures  

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michel.s5
(@michel-s5)
Active Member

So when I start printing with support structures on the first layer, the edges where the printer makes the turn always start sticking up, like it's printing too fast, but I've gone down to 5mm/s for the first layer and added gluestick to the smooth PEI sheet, but it still happens. I've also recalibrated and tried moving the nozzle closer to the bed... all without success... I'm using the grey/silver PLA supplied with the MK3S-kit and am printing with the Prusa PLA profile (not Prusament) what am I doing wrong here?

Posted : 26/04/2020 12:21 pm
peter.m26
(@peter-m26)
Honorable Member

Setting in your printer, 7x7 bed leveling,  yes.

Clean bed with dish soap only.(sticking will be better), with hot water.

Then get first layer calibration 100%. (sticking will be better). Most new users need to go lower. I had this also a print did not work, de first layer lower and it worked.

Extra normally not needed:

First layer slower 10 MM,

First layer hotter 5 or 10 C.

Make picture and let us see it.

 

This post was modified 3 months ago by peter.m26
Posted : 26/04/2020 3:16 pm
michel.s5
(@michel-s5)
Active Member

@peter-m26

I see you post this at every new post... But it has absolutely nothing to do with the issue at hand... Every print works perfectly... it is just the support structure first layer that makes the quick turns that don't stick on the edges, the actual print first layer is perfect... even with glue stick applied to the bed and the printing speed of the first layer down to 5mm/s the support structure first layer doesn't stick at the edges.

Printing hotter, colder or having a different temp for the hotbed doesn't change anything.

I always clean my build-plate/PEI sheet with dish soap and boiling water to get the grease and everything off of it.

The first layer calibration works perfectly and sticks nicely to the bed.

Also I'm not a new user, I've been 3D-printing for over 5 years now... but I never use supports... now I needed to print something that needs supports and this happens.

XYZ-calibration is top notch, all prints look uniform and I never have any issues with bad prints. At least not after I fixed my broken Idler-door...

This post was modified 3 months ago by michel.s5
Posted : 26/04/2020 5:51 pm
peter.m26
(@peter-m26)
Honorable Member

The new user is in general speaking.

Do you have a picture of your problem?

did you try different filament, is filament dry.

If you extrude filament by hand, in a high z position, does it come out straight, thick enough?

 

Posted : 26/04/2020 6:01 pm
michel.s5
(@michel-s5)
Active Member

@peter-m26

okay.

1. don't have a picture as I don't have a way to get the picture into my computer as of currently (phone is broken, can't get a new one until after lockdown)

2. Happens with all filaments, even with a brand new Prusament straight out of the box.

3. It comes out straight and is thick enough...

As I said: All prints I've been doing for over a year with my MK3S have been nothing but perfect, it's just the quick turns of the bottom layer of the support structure that seems to be getting pulled up, like it doesn't have enough time to cool, even with the fan at 100% and 5mm/s instead of 20mm/s, but I've also tried it the other way around: 0% fan and 20mm/s or 0% fan and 5mm/s it just doesn't make a difference...

This post was modified 3 months ago by michel.s5
Posted : 26/04/2020 8:19 pm
peter.m26
(@peter-m26)
Honorable Member

Try, support material, rectilinear grid.

Posted : 26/04/2020 10:07 pm
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