Jump to content
cdaher

Holes in my model

Recommended Posts

Posted · Holes in my model

Hello all,

 

I am having an issue, especially with long prints (20 hours +) that I am left with a model with several holes in it even at a "normal" quality print. Both runs with generic and ultimaker specific filament and the dissolving filament have holes. Any suggestions of what I can do to alleviate the situation? 

 

Thanks in advance,model.thumb.jpg.de23043f0dedb5f52e1ef98dc87a2ad5.jpg

 

Share this post


Link to post
Share on other sites
Posted · Holes in my model

Also the base and the tower were printed separately at so the cantilever was not including in the print.  

Share this post


Link to post
Share on other sites
Posted · Holes in my model

Are you using PVA?  You don't need pva for all those windows.  Even the ones at the very top.  PVA can create those holes.  If those aren't pva holes then they might be due to speed changes.

 

To fix PVA holes, block support where those windows are.  The tops of the windows have a "bridge" and your printer can bridge pretty well.  Especially such a short distance.  A good example of a bridge would be the top of a door frame.  More info here - look at the first two bridge photos here:

https://support.3dverkstan.se/article/38-designing-for-3d-printing#span-instead-of-overhang

 

To fix holes due to speed changes - get rid of speed changes.  Change all your printing speeds to 30mm/sec and the quality of your print will go up drastically.  Leave the bottom layer speed at 20mm/sec.  Leave the travel speed at 150mm/sec (or faster).  Anytime you have a speed change you get overextrusion or underextrusion because it takes a while for the pressure in the nozzle to stabilize.

 

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

×
×
  • Create New...

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!