Printing Stronger walls

[Johnmgg 1]

Hi all, Happy Holidays,

I am using Cura 5.2.x. I am useing Petg and I dry my filament. I have a Question about Walls. I will upload a pic of my part I am trying to print. So, if you look at the part it is perfect to the design I am trying to make. Looking at the picture itself, it is self explanatory as to what broke. The pieces that broke are used to hold metal long rods as legs.  So, my question is how can I make this stronger? I know there is Crush strength and twist strength. I wanted a combination of both. Since this part is mainly a series of Cylinders there is probably not very much in the way of infill. The rest of the part is really strong. I know that Nylon X would be stronger but I don't think this is the solution because I also, printed out fairly thin walled hollow straight rods. Also, these Rods were very very weak. Almost like I have bad filament.  I could crush them with one hand no problem. I am printing at 0.3 layer height. Line Width and Wall line width is set to 0.45. Number iof Wall is set to 5. I added a Pic of some of my settings. Any help will and is appreciated. Because this part is finished if I could figure out this issue. Also z offset is set to 0.3. Printing overall at 100 mm/s. I printed a Drum design out of Petg and TPU both  printed perfectly!

[MariMakes 208]

Hey @Johnmgg,

 

Welcome to the Ultimaker Community 🎉

This is an interesting problem. 😊
The first thing I would look at is: "What is the best orientation for the forces that are being applied?"
You'll have to take itno account that the strength between layers is less strong than the 3D printed bead. 

The second thing you can consider is: "Can you apply post processing to increase strength?"
Have you considered annealing or coating the printjob with a primer? 
 

Do you have a project file for us? It contains the printer and settings we need for troubleshooting. 
To save a project file go to File -> Save project.