About

About MetalShopMath

Free shop math for machinists, makers and home shops, made by one maker.

What it does

MetalShopMath is being built as a free set of calculators for metalwork: tap drills with percent of thread, thread dimensions, bolt circles, feeds and speeds, and bolt torque estimates, plus one page for each common thread size. Every result shows the formula and the standard it comes from, in inch and metric.

The worked 1/4-20 tap drill example on the home page is live today. The calculators are being built; the site opened early so search engines can find it.

Who makes it

Published by MetalShopMath.

Created by Saad Danish · LinkedIn

Contact

Email: hello@metalshopmath.com

Where the numbers come from

Thread sizes and formulas follow the published standards (ASME B1.1 for Unified inch threads; ISO 261, 262 and 724 for metric threads), drill sizes follow ASME B94.11M, and each page names the source it used and the date we read it. Tables are computed from the formulas. Where a tool maker or fastener maker publishes its own number, the page says to use theirs.

Copying

The text, drawings, examples and code of this site are ours. You may link to any page and quote short parts with a link. Please do not copy or republish whole pages, tools or the design.