Jump to content
Ultimaker Community of 3D Printing Experts
dale

Improving Print Quality

Recommended Posts

I would drop "initial layer thickness" to whatever your layer height is. Just be sure to level correctly and it'll get rid of the elephants foot at the base.

I find, if the difference is too great between your infill speeds and exterior wall speeds, you get inconsistent walls.

I would drop speeds to the following:

infill - 40

outer shell - 30

inner shell - 35

If you have lots of time to kill and are just going purely for quality, make everything 35. You can probably increase your layer height a bit to compensate.

Lastly, white is not a good colour for this kinda thing. White has always been the most inconsistent colour, making z-striations the most visible.

Share this post


Link to post
Share on other sites

In addition to the above of valcrow, if you have even more time available, way more time, :) you could drop speed to 20mm/s, and nozzle temp to 180°C or 190°C for PLA.

Buildplate temp: max 60°C, but if it still bonds, you might try 55°C too. This reduces sagging.

Also, if the filament is wound up too hard (near the end of the spool), straightening a few meters manually might help a bit too. Then you won't get irregular filament movements when the machine has to pull harder at some places to unwind it, and to force it through the bowden tube and nozzle. A more consistent flow = better quality.

Rather than one big thing, it might be a lot of smaller things.

Try this on a small sample first. Not on a 2 day print...

Share this post


Link to post
Share on other sites

The "shrinkage" is caused by the heated bed. The pla is not cooling enough there and it's still soft when the next layer goes on top. The outer layer is going down as a liquid rubber band (like snot) pulling inward but the lower layers are too warm to resist the pulling inward because you are still close to the bed.

Maybe get the fan up to speed sooner or lower the heated bed (and/or the nozzle) by another 5C.

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

  • Our picks

    • Introducing Ultimaker Cura 3.6 | Beta
      Ultimaker Cura 3.6 | Beta is available. It comes with new features, bug fixes, and UX improvements. We would really like to have your feedback on it to make our stable release as good as it can be. As always, you can download the beta for free from our website, for Windows, MacOS, and Linux.
        • Like
      • 95 replies
    • Print Core CC | Red for Ruby
      Q: For some users, abrasive materials may be a new subject matter. Can you explain what it is that makes a material abrasive when you are not sure which print core to use?
      A: Materials which are hard in a solid piece (like metals, ceramics and carbon fibers) will generally also wear down the nozzle. In general one should assume...
        • Like
      • 30 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies
×

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!