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کشش عمیق · پرسکاری فلزات · ماشین‌کاری CNC · بدنه شیر برقی · قطعات فلزی رباتیک و پهپاد · آماده PPAP
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پاسخ‌های فنیEmail: shawn@balford.net

Free Engineering Tools

Metal Fabrication Calculators

Practical calculators for metal processing — material weight, stamping force, bending and deep drawing. Built by our engineers for engineers, procurement teams and hobbyists. No sign-up, works on any device.

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Material Weight Calculator

Gross weight for plates, sheets, round/square bars, tubes, angles and ring blanks — kg, lbs, per meter and per foot.

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Stamping / Blanking Force Calculator

Press tonnage for blanking, piercing and stamping from material thickness, shear strength and cut length.

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Bend Allowance & Bend Deduction Calculator

Flat pattern length of bent sheet metal using bend allowance, bend deduction and K-factor.

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Tube Bending Unfold Calculator

Developed length of round and square tube after bending, with multi-bend sequences and material K-factors.

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Deep Drawing Force Calculator

Drawing ratio m = d/D, punch force and recommended die & punch radius for cylindrical deep drawn parts.

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Springback / Overbend Calculator

Predict springback angle and press-brake overbend setpoint using the ASM springback ratio.

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Why Use Our Fabrication Calculators?

Every calculator on this page mirrors the formulas we use every day in our own workshop in Zhuji, China — from deep drawing progressive dies to precision bending. We share them so you can check a quote, size a press, or order the right material stock in under a minute.

Frequently Asked Questions

Yes — every calculator on this page is free, with no sign-up, no email required and no usage limits. We keep them as a practical resource for engineers and buyers working with metal parts.

Gross weight is the weight of the raw material before machining or fabrication — the stock you actually order and cut. Net weight subtracts holes, cutouts and machined features. For quoting and shipping, always start from the gross weight and add a small scrap allowance.

Every dimension input accepts mm, cm, m and inches, and results are shown in both kilograms and pounds. Just pick the unit next to each field and the calculator converts everything for you.

They are an excellent first estimate. For a final production quote, send your drawing to Balford at shawn@balford.net — our engineers will confirm material, tolerances and price within 24 hours.