Ver. 3.6.1 - Multi-color 3D Printing, Smart Offset Improvements, Major Rendering Speedup, etc. (2026/7/2) - Leathercraft CAD

✨ Highlights

• Multi-color 3D printing — text engraving STL export now separates the engraved part and the base

• Improved Smart Offset — more accurate inside/outside detection

• Improved Bezier curve offset — clean offsets even at sharp-angle joints

• Major rendering speed boost — cached grid rendering and optimized PAN/ZOOM

• Smarter automatic IME on/off handling

🚀 New Features & Enhancements

3D Pattern

• Multi-color 3D print STL export — STL export for text engraving can now produce separate parts for the engraved text and the base, making multi-color 3D prints easier to produce.

Offset

• Improved Smart Offset inside/outside determination — closed chains now reliably offset to the correct side based on cursor position.

• Improved Bezier curve offset at sharp-angle joints — curves are no longer warped; outer corners are bridged with straight connectors, and inner corners are trimmed at the true crossing point.

Rendering Speed

• Grid rendering is now cached, greatly improving preview responsiveness while drawing shapes.

• Optimized PAN/ZOOM rendering to eliminate frame drops and stutter (shapes jumping), especially on Windows.

IME

• Returning from the memo field to shape editing now automatically disables IME, and returning to the memo restores the previous IME state.

• If IME was turned on in another app, it is now automatically disabled while editing shapes.

Editing

• Ctrl+A (Cmd+A on Mac) now selects the text inside a focused text field or number box instead of selecting all shapes.

🐛 Bug Fixes

Auto Pricking

• Fixed fixed-pitch mode not working correctly.

• Fixed the result (actual pitch, etc.) not being displayed correctly in the status bar.

Rendering / Mac

• Fixed a freeze where an exception during shape drawing could hang the whole app (exceptions are now logged so drawing can continue).

Bonus Features / Mac

• Fixed the bonus-features screen unintentionally opening just by bringing the app to the foreground.

Startup

• Fixed a rare crash on startup (caused by print-setup dialog initialization timing).