Observed arrival · 2026-10-29

MetalCalz: workshop calculators for real jobs

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Editorial interest 76/100 Selection signal · not a rating of the site

A free library of industrial calculators and practical guides for machining, fabrication, welding, piping, and construction.

Landing page captured for the 2026-10-29 issue.

For: Makers, fabricators, technicians, and curious builders
Worth noticing: The library groups tools by job area, from drilling and tapping to roofing quantities, and includes a diagnostic guide for broken taps.

Field notes

The homepage sorts its tools by work area, including drilling and tapping, welding, sheet metal, piping, estimating, and construction. Examples indicate practical inputs and adjustments: welding heat input uses voltage, current, and travel speed, while the roofing sheet quantity calculator accounts for side and end laps. A tap-breaking diagnostic guide adds troubleshooting alongside the calculators.

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