Guides

Plain-language guides for laser and CNC files, jewelry and casting, and the metal calculators, each with its formulas or checks.

Laser, CNC & Vector File Guides

File formats, preparation, validation and cutting basics.

Which vector format to send to a laser cutter, what each one preserves, and how to avoid import problems.

A checklist for cut-ready files: closed paths, no duplicates, correct scale, outlined text and sensible details.

What open paths and duplicate lines are, why they cause bad cuts, and how to find and fix them.

How CorelDRAW CDR, SVG and DXF differ, what is lost in conversion, and when each makes sense.

What kerf is, why it affects joints and fit, and how to measure and compensate for it.

Casting weight, density and metal estimation for jewelers and designers.

How casters estimate the metal needed from a wax or resin pattern, and the density-ratio method behind it.

Typical densities of gold alloys, silver, platinum and common workshop metals, and how to use them.

How prices, purity, units and exchange rates work — with the formulas behind our calculators.

How the international gold spot price becomes a price per gram, tola or ounce for a given karat, and why local prices differ.

How to convert between grams, tolas and troy ounces, what a tola is exactly, and how purity changes the price.

What karat means, how it maps to fineness and percentage, and how purity affects value and density.

Why the international spot price rarely matches the rate quoted by a local jeweller or bullion dealer.

How a US-dollar metal price is converted into your currency, where rates come from, and what “delayed” rates mean.

Why gold and silver are quoted per troy ounce, how it differs from the everyday ounce, and how to convert.

Metal value, wastage, making charges and tax: how a jewelry price is built from weight and purity.