Rings
Choose a ring tool. The dropdown replaces separate tabs to keep mobile navigation clean.
Ring Wire Length Calculator
All results are shown in millimetres (mm).
Poison ring (stone seat)
Creates print-ready templates for a hollow compartment + lid + square bezel seat. Illustrations are 1:1 for cutting; geometry is deterministic (no artistic scaling).
Defaults & assumptions
- Bezel seat: opening follows stone type; opening dims = stone dims + 2×0.15 mm clearance.
- Lip overlap (friction-fit): 0.40 mm skirt depth on lid.
- Box wall thickness: equals sheet thickness.
- All drawings are for cutting/folding guidance; adjust for your own forming method.
Domed Disc Size Calculator
Empirical jeweller’s rule (as in your original calculator) plus an optional geometry model.
Dbase = Dfinal − thickness.
Then Ddisc = 2√((Dbase/2)² + h²).
Dome Height Estimator (from Disc)
Pure geometry (no empirical constant): assumes the dome is a spherical cap && the metal surface area is conserved.
With disc radius r && dome base radius a, spherical-cap area gives: h = √(r² − a²) (valid only if r ≥ a).
Bangle Wire / Strip Length Calculator
Uses the neutral-axis circumference: L = π × (Dinner + 2×NA) (+ optional solder allowance).
Neutral axis (NA) is taken at the section centroid: round/square t/2; half-round (flat inside) 2t/(3π).
Clasp (optional) — generate clasp templates together with your bangle
Clasp
Choose a clasp type to generate bench-first guide templates (flat patterns) && a simple sketch preview.
Bezel Strip Length Calculator
Computes bezel strip length along the mid-thickness “neutral” line. Add overlap if you want a meeting gap || trimming allowance.
Round: L = π(D + t). Rectangle: L = 2((L + t) + (W + t)). Oval/Ellipse: exact perimeter via the complete elliptic integral of the second kind (numerical integration).
Stone Shapes
Reference shapes & practical setting notes. Enter stone dimensions, then choose Prongs or Bezel to see helpers and (for Bezel) generate a printable template inline.
Select a stone shape to view notes and parameters.
Locket / Opening Pendant (Hinge + Friction)
Flat cut templates for an opening locket-style pendant: two face plates, two perimeter wall bands (front/back halves), hinge-tube strip with knuckle layout, friction tab, && bail strip. Print 1:1 && cut out the pieces.
Decorative
Decorative templates.
Flowers
Saw-safe outer contour + visual guide lines. Enter diameter, press CALCULATE, then print 1:1.
Label / page size
Feather template
Adjustable feather outline + centre stem + veins. Print 1:1 and use the lines for stamping, engraving, piercing or saw-piercing guides.
Parameters
Preview & Print
Leaf templates
Adjustable leaf outlines with centre stem + midrib + veins. Print 1:1 and use the lines for stamping, engraving, piercing or saw-piercing guides.
Parameters
Preview
Geometric Shapes
Printable 1:1 geometric outlines for piercing, stamping, bezels, and layout guides.
Parameters
Preview
Patterns
Repeatable geometric patterns for borders, pavé spacing, drilling guides, and layout planning.
Pattern
Dimensions & Repeat
Cutting Template (Label)
Preview
Cats
U‑body cutout + derived strip previews based on equal-length blue/red paths in your sketch.
Label / page size
Rosette / Medallion
Radial rosette outline + optional guide rings. Enter dimensions, press CALCULATE, then print 1:1.
Sunburst / Radiating Lines
Radiating line guide for engraving, chasing, or layout. Print 1:1.
Piercing Pattern Generator
Hole layout guides for drilling or piercing. Print 1:1. (Guides only — do not cut from paper.)
Border Pattern Generator
Repeatable border strips (print 1:1). Choose a motif, set length/height, press CALCULATE, then print.
Star Polygon / Rosette Variants
Star polygons {n/k} and quick rosette-style variants. Print 1:1 for layout, piercing, or engraving guides.
Celtic Knot Base Grid
A printable base weave grid to help draw/pierce Celtic knotwork. This is a guide, not finished artwork.
Sacred Geometry
Guideline-only sacred geometry templates (engraving / piercing / laser). Select a generator, press CALCULATE, then print 1:1.
Print setup
Printing tip: choose 100% scale and disable “Fit to page”.