Jump to content
Ultimaker Community of 3D Printing Experts
Dalemaunder

Visible lines in first layer and bubble-like indentations?

Recommended Posts

Hey guys,

I printed out a case for my phone to see how well the printer was handling large solid layers, I've tried searching for the problem myself for a little while but the answers I've found seem to be contradicting themselves.

I're read that the fix for the lines is getting the print head closer to the bed, but the answer for the bubbles is to raise it.

Here's a picture of the print in question: ucg5niL.jpg

The bottom left corner is super smooth line-wise but it does have a little bit of bubbling.

PLA at 50mm/s, 205C hotend, 70C bed. I've seen a couple of places say that 70C can be too high for PLA and yet a lot of people say 70 is recommended so I'd love some clarification on that.

Thanks.

Share this post


Link to post
Share on other sites

70C is quite high and higher then the glass transition temp of most PLA's

the default temp on UM2 is 60C and I also print at 50 all the time.

You can also get those bubble marks where it doesn't stick, you can see it peel up as it goes over those points when printing the first layer. maybe where you touched it or oil dripped on it. A good clean with Alcohol may help.

  • Like 1

Share this post


Link to post
Share on other sites

70C is quite high and higher then the glass transition temp of most PLA's

the default temp on UM2 is 60C and I also print at 50 all the time.

You can also get those bubble marks where it doesn't stick, you can see it peel up as it goes over those points when printing the first layer. maybe where you touched it or oil dripped on it. A good clean with Alcohol may help.

 

Thanks for the info, It's in the middle of a print at the moment but I lowered the temp down to 55 before it started to see how it went.

I'll give it a clean after the print finishes, thanks.

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

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 0 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!