Jump to content
Ultimaker Community of 3D Printing Experts

Outer Shell Cracking!

Recommended Posts

Salutations :)

Why does the outer shell splinting? What I am talking about is when a layer does not adhere to the previous layer, causing a gap (warping) between layers on the shell. This is not warping from the build table but after several (>200) layers has been printed. Like on one model was 128mm an another was only about 55mm tall when the warp happened. This warping seems to be random. Also as more layers are added the gap seems to grow. I have seen this with PLA,Nylon an ABS filament.

Any clues on why this is happening?

Rocket Nut

Share this post

Link to post
Share on other sites

Hi @RocketNut,

Thank you for your post!

Usually a photo really helps when you are describing a problem.

Without a photo, I have to interpret your interpretations of a certain issue, and from experience I have learned that does not always mean we are on the same page ;)

I think you are talking about delamination, which usually happens with ABS.

ABS has the tendency to shrink when it cools down, more than other materials. Usually this results in warping, when the hot layers that cool down shrink, they force pull in the bottom layers.

Except.... when the individual bonding among layers is weak and it pulls apart the layers. You could try to avoid this by closing off your 3D printer (what brand do you have?, you can update your user profile with this type of information), print slower and a little bit hotter. This should ensure better layer bonding.

Good luck!

Share this post

Link to post
Share on other sites

Sorry for the delay. Whats the setting so I get an email notice when a reply has been post to my posts?

I am using a Creality 3D® CR-10 printer.

This delamination (please see attached screen shot) was with PLA filament.

As for ABS I am still tiring (newbe status) different settings to find out what will be the best. I am also using ABS to learn how to print with carbon fiber filament, which is needed for this model hes the required proper strength.

Share this post

Link to post
Share on other sites

If you click your name in the top right corner, go to settings and notifications.

While you are at it, you can also have a look at forums, and see if you want to customize the way the forums is presented to you.

PLA usually shouldn't warp or delaminate, or veeeeery minimal. Have you tried increasing the temperature? Turn off the fan? Are you sure it is PLA?

Share this post

Link to post
Share on other sites

The reel says it PLA. I will try a higher temp with my next print, along with turning off the fan.

As for ABS and Carbon Fiber filament some one suggested I enclose my printer. I live in a very small apt, so I don't have the room nor the equipment to build the enclosure. Any suggestions on how to print ABS an Carbon Fiber with out the enclosure?

I notice my previous post does show my screen shot! Did it appear when you read it?

Share this post

Link to post
Share on other sites

The point of enclosing is to keep the heath in and preventing any draft entering your printer. So some cardboard boards or even a plastic (garbage?) bag could do the trick! (it won't look fancy, but we got to prioritize right? ;))

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!