Mill

Machining, metal, and 3D print calculators

What the bar weighs, where to start the spindle, and what to charge for a printed part.

How these calculators work

Steel weight is the volume of the shape times a density. Plate, round and square bar, round and rectangular tube, angle, channel, and a W-shape built from two flanges and a web are the shapes. Densities are room-temperature typical values for carbon steel, 304 stainless, 6061 aluminum, generic brass, copper, and Grade 2 titanium. A mill certificate replaces every one of them.

Speeds and feeds turn surface speed and diameter into RPM, then chipload, teeth, and RPM into a feed. Milling, turning, and drilling share that identity. The surface-speed and chipload table is a set of starting points compiled for this site. The tooling manufacturer’s chart takes precedence. The 3D print calculator prices filament, electricity, and a machine rate you choose, then a markup. That price is the sale the Etsy, PayPal, and Stripe fee calculators start from.