Flat-Bottom K9 Crystal Ball

About this product

Key Features

Premium optical-grade K9 crystal. High-transparency crystal provides exceptional clarity and accurately showcases engraved photos, logos, and intricate artwork.

Compatible with the xTool F2 Ultra UV. Supports UV engraving, UV embossing, and inner engraving workflows on this rectangular K9 crystal blank.

Flat-bottom presentation. The pressed base helps the finished ball sit upright for display without requiring a separate holder.

3.1 in / 80 mm diameter. A compact sphere size for custom crystal pieces when you want a defined focal point without moving to a larger display ball.

Perfect for personalized glass décor, keepsake gifts, event mementos, desk displays, and small-batch custom orders.

Good to Know

Clean before processing. Wipe the processing surface before engraving or inner engraving, because dust, fingerprints, or oil can soften detail and create inconsistent results.

Learn UV Inner Engraving. Click here for the UV inner engraving tutorial.

Handle with care. K9 crystal is durable but may chip or crack if dropped or subjected to strong impact.

Add color with Glass Painting Pens. Color in the engraving,then wipe the excess off the smooth glass. The pigment stays in the etch for a bolder finish.

More about K9 crystal. K9 is purer than regular soda-lime glass — no green tint, virtually no bubbles — which is what lets it hold a clean internal engraving. See Regular Glass vs. K5 vs. K9 Crystal.