description: "July 2026 challenge dialing in seamless scarf z-seam alignment on organic curved surfaces."
tags:
- challenge
- archive
- 2026
- challenge-008
---
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# Past Challenge: July 2026
## Challenge: Scarf Seams
Master the art of scarf seam placement! This month's challenge focused on dialing in your scarf seam settings and techniques.
### The Focus
The scarf seam is a powerful tool in your 3D printing arsenal. This challenge asked participants to create a model with a carefully placed scarf seam on a **sphere**. It provided an opportunity to experiment with different settings and share what was learned about getting the perfect seam placement.
One of our community members designed a great test part specifically for this challenge! You can find their test model in our Discord server here:
[Community Scarf Seam Test Part](https://discord.com/channels/743827009494319226/1420553252587438142/1517194820706242570){target="_blank"}
### Submission Requirements
* **Physical Model**: Brought to the July 15th, 2026 meetup.
* **Size Constraint**: The object had to fit within a **75mm cubed space**.
* **Seam Location**: The seam was positioned on a sphere (the bottom half square approach was permitted).
* **Settings Discussion**: Participants shared their print settings, temperature, speed, and tricks for achieving clean scarf seams.
### Timeline
* **Challenge Announcement**: June 17th, 2026
* **Show & Tell / Discussion**: July 15th, 2026 meetup
