3D printing - always one perimeter is NOT flat

guanhao_zhang071

Hi,
When I print cubes, they always have one side not flat at all. Especially the corner of that perimeter.
How does that happen? readjust the platform's level? the issue of nozzle?
And one more thing, how could I make the top sealed? It is like this all the time.

Thanks for help.
Just like this:

Jason_S

Your extrusion rate is not correct. Lets say you tell your printer to extrude 100mm of filament. right now your printer listens, and instead extrudes 110mm of filament. Another issue could be inconsistencies in the thickness of your filament, take a set of calipers and check the diameter at multiple places along the spool.The two resources below should help your problem. They are solidoodle specific, but should point you towards a fix.

Your part is also lifting off the build plate. try a raft in your slicer software and adding extra loops before the first layer begins. A larger surface area will fid that problem.

http://wiki.solidoodle.com/flow-rate
https://www.youtube.com/watch?v=JZGdMc2ebPo

Lumen

I dont think you can fix that by adjusting anything in Onshape. Try your printer software setup manuals.

øyvind_kaurstad

I'm quite sure that this has nothing to do with Onshape, it is more likely a problem with your printer or slicer settings.
I've been printing lot of my Onshape designs, and the STL files exported from Onshape has been flawless every time.

If you still insist that this has something to do with Onshape, make your model public and post the link here.

Jason_S

Your extrusion rate is not correct. Lets say you tell your printer to extrude 100mm of filament. right now your printer listens, and instead extrudes 110mm of filament. Another issue could be inconsistencies in the thickness of your filament, take a set of calipers and check the diameter at multiple places along the spool.The two resources below should help your problem. They are solidoodle specific, but should point you towards a fix.

Your part is also lifting off the build plate. try a raft in your slicer software and adding extra loops before the first layer begins. A larger surface area will fid that problem.

http://wiki.solidoodle.com/flow-rate
https://www.youtube.com/watch?v=JZGdMc2ebPo

guanhao_zhang071

øyvind_kaurstad said:

I'm quite sure that this has nothing to do with Onshape, it is more likely a problem with your printer or slicer settings.
I've been printing lot of my Onshape designs, and the STL files exported from Onshape has been flawless every time.

If you still insist that this has something to do with Onshape, make your model public and post the link here.

Hi øyvind_kaurstad,

I know it is a problem with my slicer settings. however I tried to adjust shells thickness, top layers, fill density, print speed and so on, don't work at all.

michael3424

Most of your problems seem unrelated to anything you can do in Onshape as @Lumen said, and can be better addressed by a user support forum for the printer and/or slicer that you are using.

teddy_pessagno

@guanhao_zhang071

I am new to Onshape and even newer to the 3d printing world. I have been printing for 3 weeks now.

But...
What type of printer do you have?
How long have you had it?
What Slicer program are you using?

I started out with this site ( http://reprap.org/wiki/Calibration ) and tried to stick to it step by step.
I was getting prints like yours but not as bad and a couple of things were happening.
First was extrusion rates like @jason_slingerland said. I tried many different ways until I did it just like that video. Then I left the extrusion rates alone and worked on the next part.
For me it was the max speed for the Z-axis. I missed a complete page in the build instructions and when I figured that out i have been printing with pretty good results.


Thanks
Teddy_P

guanhao_zhang071

teddy_pessagno said:

@guanhao_zhang071

I am new to Onshape and even newer to the 3d printing world. I have been printing for 3 weeks now.

But...
What type of printer do you have?
How long have you had it?
What Slicer program are you using?

I started out with this site ( http://reprap.org/wiki/Calibration ) and tried to stick to it step by step.
I was getting prints like yours but not as bad and a couple of things were happening.
First was extrusion rates like @jason_slingerland said. I tried many different ways until I did it just like that video. Then I left the extrusion rates alone and worked on the next part.
For me it was the max speed for the Z-axis. I missed a complete page in the build instructions and when I figured that out i have been printing with pretty good results.


Thanks
Teddy_P

teddy_pessagno,

It is not from any manufacturers, it is called FigFab PanguI3 built by David Lorhonen.
Less than a year I have had it.
I use Slic3r.
I'm trying to follow what @jason_slingerland suggested.

Thanks for your share.

GWS50

You're print temperature is too hot and the 'run-off'(in Simplify3D it's called 'Coasting Distance') should be set to stop 1mm short. I have had this problem. Set your cooling fan to high or at least 80% after the first 2-3 layers. You want the extrude temperature hot so it sticks to the bed but after that cool things down so you don't let the filament become 'sloppy' and to prevent warping.

GWS50

When I say 'print temperature' I mean the filament head not the bed.