FINE JEWELRY, GOLDSMITH & ROTARY ENGRAVING PREPRESS

Jewelry Hallmark, Ring & Rotary Engraving Calculator

Compute 360° ring circumference unwrapping ($C = \pi D$), maximum permissible arc text span angle ($\theta_{\text{span}}$), diamond drag scribe downforce (grams), and single-stroke centerline vector conversions for Assay Office hallmark compliance.

1. Surface Geometry & Ring Size

Engraving Surface Profile

Standard Ring Finger Size (US / ISO Diameter)

Precious Metal Alloy

2. Tooling & Inscription Scale

Engraving Tooling Method

Character / Hallmark Height (mm)

Total Inscription Character Count

e.g. "Forever & Always 2026" (21 chars including spaces).

Unwrapped Toolpath & Machine Settings

Unrolled Circumference

54.35 mm

Flat vector X-length

Arc Span Angle

79.4°

Coverage: 22% of ring

Target Scribe Depth

25.0 µm

Microscopic depth

Spring Downforce / Power

150 g

~1.47 N preload

RING ROTARY CROSS-SECTION & TEXT ARC SPAN:

Vector Font Architecture:

                            Single-stroke centerline vector font (1-line Hershey/DXF). Outline TrueType fonts will blur into unreadable solid blobs at 0.8mm height.
                        

Order Single-Stroke Jewelry Vector Files

SpotItLive converts family crests, signatures, fingerprints, and custom typography into mathematical single-line centerline toolpaths for Gravograph, Roland Metaza, and fiber laser rotary chucks.

Order Jewelry Vector Conversion (29 DKK)