poor bottom surface quality

3D Printing Printroom
#1

Hi,

Thought I would print a minion to take up a bit of room on my print bed whilst printing another couple of small parts.

I printed it laying down, as the last time I printed it, it was standing up, and the supports were very hard to remove.

As you can see, the rounded bottom surface is very poor. The rest of it seems ok.

Is it because its rounded?

I am not getting great results with the black ultrat.

Black ultrat

0.09 layers

Normal speed

10% support

Solid infill

auto fan (since I had other parts on bed)

#2

You can read about the problem in this thread: http://forum.zortrax.com/index.php?/topic/732-sphere-printing/?hl=rounded

#3

You can read about the problem in this thread: http://forum.zortrax.com/index.php?/topic/732-sphere-printing/?hl=rounded

Thanks Trhuster,

So it s a bit of an issue.

Maybe an update of the software may sort it out a bit.

I thought it may be a dodgy roll of ultrat.

😄

#4

Ive been getting some black ultra prints like that too. 

some prints are perfect and others are nasty like your pic. I figured it was a software or firmware issue cause its not a file issue.

Now I can do the same print that I have issues with ultra using Zabs and the print will be perfect. Thats how i figured it was a profile issue with the software.

#5

roundy shape on the bottom, you can't beat physics laws..

print it stanind on it's feet

#6

@ssangster, please increase support angle to 30*, it will increase quality when printing rounded bottom. You can also use 0.14 layer height and set fan cooling as 60-80%.

#7

What I recommend doing with a file like the minion is to cut him in half in z sweats and the glue him back with acetone. That way both sides print facing up.

#8

What I recommend doing with a file like the minion is to cut him in half in z sweats and the glue him back with acetone. That way both sides print facing up.

Or if you can get your hands on some MEK, that stuff works great. 

#9

http://www.amazon.com/Craftics-33-Thick-Acrylic-Cement/dp/B00M1UB6BY/ref=sr_1_3?ie=UTF8&qid=1425691609&sr=8-3&keywords=methyl+ethyl+chloride

Seems like this would work nicely