Automate Your Hard Surface Shading and make seams with one click (Just press Alt + C)  in Blender!

Are you spending way too much time manually marking seams and sharp edges on complex 3D models? Quick Seam & Sharp is a powerful Blender add-on designed to take the tedious, repetitive work out of UV unwrapping and edge shading.

Built with intelligent, curvature-aware geometry analysis, this tool automates the marking of Sharp edges, Seams, and Bevel weights with just one click—saving you hours on every project while delivering pristine results.

  Core Features & Benefits

• One-Click Automation: Instantly detect and apply Sharp edges and Seams based on a customizable angle threshold (default 45°). Just press Alt + C to run the macro on all selected objects!

• Intelligent Ring/Tube Detection: Specially designed algorithms perfectly handle cylinders, pipes, and spherical shapes by generating an optimal single longitudinal "Master Seam"—without adding unwanted sharpness that would ruin your smooth shading.

• Smart Planar Cleanup: Automatically removes redundant and unnecessary seams on flat surfaces, leaving you with cleaner, easier-to-pack UV islands.

• Complete Granular Control: Need specific adjustments? Use individual toggles for Sharp, Seam, Bevel, and Master Seam directly from the convenient N-Panel. The tool respects your choices and can preserve your existing manual edge marks.

• Flawless Shading Delivery: The addon automatically applies and configures a Weighted Normal modifier at the end of your stack, guaranteeing superior shading right out of the box.

 Technical Details

• Future-Proof: Fully compatible with Blender 4.1+ (utilizing the new Smooth by Angle modifier), while maintaining full backward compatibility with older versions (using traditional auto-smooth methodology).

• Bevel Weight Support: Automatically assigns Bevel weights (0.0 to 1.0) along your detected angles for non-destructive bevel workflows.

  * Additionally, it includes a toggle texture checker function that remembers the original materials!

Why choose Quick Seam & Sharp? This isn't just a basic angle calculator. It’s a smart workflow assistant that actually understands your geometry to create seams and perfect hard-surface shading.