Bottom of print not as expected

[jazzper80 0]

Hi all,

I'm hoping someone can explain what I am doing wrong here.

I uploaded some images in an Imgur album here:

http://imgur.com/a/59BUP

http://imgur.com/a/59BUP

As you can see, one of the flat sides is filled solid, without gaps. This is the top side of the print.

But the other one has a lot of space between the lines, and irregularities. This is the bottom side of the print.

The last picture is from the side.

I'm using a UM2 with the following settings:

http://imgur.com/a/sxYF6

http://imgur.com/a/sxYF6

I don't understand why the bottom side is so rough compared to the top side.

Can anyone shed some light on how/why this is happening?

Thanks in advance!

Edited July 6, 2016 by Guest

[DidierKlein 729]

Hi and welcome,

I think that you need to level the build plate a bit closer to the nozzle.

The first layer needs to be squished more. In your case it looks like the first layer is not squished but rather "layed".

The first layer in your case looks like the lines are piece of round filament, it needs to be flat.

If the first layer is almost transparent you are to close, if the lines are not closed you are to far.

More information can be found here

[jazzper80 0]

Hi DidierKlein,

Thanks for your reply. This does make a lot of sense. I'll re-calibrate the build plate and give it another shot. I'll let you know the results.

[DidierKlein 729]

You are welcome

Also if possible please upload your next pictures directly on the forum (Go to albums in your profile and upload pictures there and the use the image gallery button here on the forum

Good luck with your next print!

[jazzper80 0]

So I redid the calibration and this was indeed the problem.

The bottom is now just as solid at the top side, perfect.

Thanks a lot for your help!