Perfecting first layer

Snapmaker 2.0
1

image
image3024×4032 2.5 MB
image
image1580×2108 695 KB
Long story short - auto leveling wasn’t working for me. I finally manually calibrated the bed for 3D printing.

I think I’ve dialed in the leveling of the bed.

I change initial layer to .3 instead of default .24 and slowed initial layer speed to 15 (I think that was the setting). I also played with a few other settings.

The only thing I want to fix is the first diagonal lines it puts down in the corner (on the bottom). The topside on the initial layer looks perfect. Is this fixable?

First picture just shows the finished piece (front and back) on fast speed. Highlighted part is where it starts the first layer fill. It draws a square first snd then draws the diagonal lines.

I’ve watched it lay it down and from the top (before the next layer is put down) it looks fine. It’s just the bottom corner where the diagonal lines start.

2

Your first layer is too far away from the bed, you have to level a bit tighter, not much.
Have a look at this picture:

image
image1000×562 192 KB

3

Actually the picture makes it look like it’s farther away than it is. It looks like the middle picture.

4

image
image1320×3206 1.69 MB

The top is too high and bottom one is too low. Muddle one is the one pictured above.

5

I’m guessing the corner you’re complaining about is where it starts laying down the layer, not the final corner.

You said that’s printed on Fast Speed. I have a bit of missing filamanet after the print head travels on Fast. It seems to be less of a problem on the slower speeds, but I haven’t taken the time to prove it.

The default print settings have Retraction enabled to help prevent stringing, at 6.5mm @ 25mm/s. And higher speeds, that means printing after a travel might be slightly starved of filament for a bit. It is a trade off though. Too little retraction, you’ll get a lot of stringing. Too much retraction, and you get a lot of voids. Print temperature is also a variable; too high of temp, and the filament oozes out during travel.

I’d suggest printing a temperature tower first, then a retraction test. Some users have tweaked retraction down to 1 mm @ 60mm/s. The 3D Printing Walkthrough section 4 has gcode for both tests. I believe that running couple of iterations can help, because changing one can affect the other.

6

Do you see, at the last cube is no missing edge.

7

Awesome I’ll try those tests out. Also I actually watched it print (I watched few times to make sure) and it’s at the end of the print of the first layer. I thought maybe first as well until I watched it print the layer.

8

It’s not missing bc it’s squished and stuck to the bed.