Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
guitardr34m

Part not printing as it shows in Cura

Recommended Posts

Hey everyone,

I finally decided to purchase an Ultimaker 2. I printed some small little items the other day when I got it and they came out great.

But now I need to start printing parts for a prototype I'm working on which is the whole reason I bought the printer to start with. Here is a copy of the amf file I uploaded to Thingiverse http://www.thingiverse.com/thing:497580

As you guys can see it's symmetrical on both sides but when I started to print it, the holes on the right side didn't print out.

https://drive.google.com/file/d/0Byffs2-9EE3bRGJ2QWxGdG13ZFE/view?usp=sharing

You can see in this picture that the 2 holes on the bottom printed out fine and also the start of the larger hole came out fine.

https://drive.google.com/file/d/0Byffs2-9EE3bTHdpeGxKbUV1RUU/view?usp=sharing

But then on the other side the 2 smaller holes kind of came out but the start of the larger hole isn't even there.

Does anyone know what could be causing this? Any insight is much appreciated.

 

Share this post


Link to post
Share on other sites

go into expert settings in Cura expert tab> open expert settings (or ctrll+E) . Go to bottom right and uncheck "combine everything (type A).

Go back and look at the model in layer view, moving up through the layers to see if it's going to print the holes now.

It's a good habit to look through your layers before every print to see how it's going to print. For instance, there may be times when you want 100% fill, but accidentally have it set to 20%. If you look through your layers, you'll catch things like that before wasting valuable time on a print.

It also may be the .stl itself is faulty. Have you tried to run it through netfab? In case you are unfamiliar, it's a free program that fixes .stl files for you...really helps when trying to print models from inferior cad/design programs.

here's the link to netfab

https://netfabb.azurewebsites.net/

if it's something else post back and I'll try to help

 

Share this post


Link to post
Share on other sites

go into expert settings in Cura expert tab> open expert settings (or ctrll+E) . Go to bottom right and uncheck "combine everything (type A).

Go back and look at the model in layer view, moving up through the layers to see if it's going to print the holes now.

It's a good habit to look through your layers before every print to see how it's going to print. For instance, there may be times when you want 100% fill, but accidentally have it set to 20%. If you look through your layers, you'll catch things like that before wasting valuable time on a print.

It also may be the .stl itself is faulty. Have you tried to run it through netfab? In case you are unfamiliar, it's a free program that fixes .stl files for you...really helps when trying to print models from inferior cad/design programs.

here's the link to netfab

https://netfabb.azurewebsites.net/

if it's something else post back and I'll try to help

 

Thanks for those tips it's really appreciated!

 

Share this post


Link to post
Share on other sites

Thanks again for that tip my 12 hour print came out almost flawless thanks to you!

https://drive.google.com/file/d/0Byffs2-9EE3bUlhlWXBTTVhiMTQ/view?usp=sharing

But now I seem to have another problem with a different print that I am hoping you could help with.

https://drive.google.com/file/d/0Byffs2-9EE3baDJVQlBNTTJueVk/view?usp=sharing

The problem as you can probably see is with the outline it makes for the small circles. When it prints them the nozzle keeps extruding as it travels to the next one and it grabs onto the circles and ruins them. I tried decreasing the retraction speed and increasing the height but that didn't help. I also increased the bed temp. to 70c for the first layer as I read in some threads and decreased the nozzle temp. to 198c. Neither of those helped.

Any other ideas on how I could fix this?

 

Share this post


Link to post
Share on other sites

Levelling the bed a bit closer so that the first layer is squeezed onto the bed tighter can help. But I would recommend installing this plugin. Download the file and dump it in [installation directory for cura]/plugins and restart cura.

These are the settings I use for a 0.2mm first layer.

retractWhileCombingScreenshot

This will cause the printer to retract, lower the bed, perform the move, un-retract and bring the bed back up again. This helps to prevent the nozzle from dragging across the already printed lines.

 

Share this post


Link to post
Share on other sites

Levelling the bed a bit closer so that the first layer is squeezed onto the bed tighter can help. But I would recommend installing this plugin. Download the file and dump it in [installation directory for cura]/plugins and restart cura.

These are the settings I use for a 0.2mm first layer.

 

This will cause the printer to retract, lower the bed, perform the move, un-retract and bring the bed back up again. This helps to prevent the nozzle from dragging across the already printed lines.

 

Thanks for the quick reply.

I leveled the bed a little closer to the nozzle like you suggested and also downloaded the plugin and used the settings you showed.

https://drive.google.com/file/d/0Byffs2-9EE3bRTRGaGx3NGtGeGpOZnJXdHdFa2tpTmsySlpZ/view?usp=sharing

It looks a lot better but i'm still having some issues with it. It almost looks like its printing them too fast. I have the print speed set to 30mm/s and the infill to 60mm/s. Would that have anything to do with it? I assumed 30mm/s would be slow enough but maybe its printing at 60 instead? I didn't think those circles would be considered infill.

 

Share this post


Link to post
Share on other sites

There's this z-hop feature in the settings too, that would to almost the same thing wouldn't it?

 

I'm not sure it does when combing. It doesn't trigger z-up when combing.

 

It looks a lot better but i'm still having some issues with it. It almost looks like its printing them too fast. I have the print speed set to 30mm/s and the infill to 60mm/s.

 

Changing speed between shell and infill can cause blobs or under-extrusion because of big difference in speed change can cause. Also you might want to print at a higher temp to get good flow at 60mm/s than what you would need at 30mm/s.

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

[[Template core/front/global/_customFooter does not exist. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!