--- title: "July 2026: Scarf Seams" category: "challenges" subcategory: "2026" order: 202607 description: "July 2026 challenge dialing in seamless scarf z-seam alignment on organic curved surfaces." tags: - challenge - archive - 2026 - challenge-008 --- [← Back to Home Page](Home) # 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 * **Winner Announcement**: July 15th, 2026 meetup --- **This challenge was active for July 2026**