Build-to-print sheet metal: drawing to dispatch
Build-to-print sheet metal manufacturing from drawing to dispatch: the nine gates, the evidence at each one, and the numbers that keep a repeat order identical.
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Topic hub · 30 guides
Bending, welding and finished assemblies
A bend is where a flat drawing becomes a part, and a weld is where several parts become an assembly that either fits at the customer's line or does not. Ganesh bends on a 200 T, 4,450 mm, 5-axis CNC press brake and welds on three CLOOS robotic cells plus more than 30 manual stations. These guides cover K-factor and bend allowance, minimum flange, springback, long-panel distortion, fixture design, weld sequence, assembly tolerance stack-up and inspection.
Guides in this topic
Press brake bending, bend allowance, fixtures, robotic MIG welding, distortion control and the tolerances a finished welded assembly can actually hold.
CNC press brake bending: a buyer's guide
What a press brake specification does and does not promise, the tonnage table that limits your part, and the eight questions that separate two bending quotes.
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200 T Press Brake Bending for Industrial Parts
What 200 tonnes actually limits: tonnage per metre, die opening, inside radius and the bend lengths that fit a 4,450 mm bed, with numbers to check.
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4,450 mm long bed sheet metal bending: the real envelope
What a 4,450 mm brake bed can and cannot form: tonnage at full length, flat-pattern error across six bends, and how to inspect a 4.3 m panel.
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How to calculate bend allowance and bend deduction
Bend allowance is the arc through the neutral axis: 3 mm CRCA at R3 and 90° gives 6.79 mm, a 5.21 mm deduction and a 324.79 mm flat. Formula, table and worked steps.
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K-factor in sheet metal bending: values and how to measure it
K-factor moves from about 0.33 to 0.50 as the bend radius grows. Values by R/t, a coupon procedure that measures your own K, and what a 0.02 error costs on the flat.
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Minimum bend radius by material and thickness
Minimum bend radius by material: inside-radius multiples for CRCA, stainless, aluminium, copper and brass, with the strain and springback numbers behind them.
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Minimum flange length for press brake parts
Minimum flange length by thickness and die opening, why a short flange drops into the die, and how to design below the limit without losing the bend angle.
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Hole-to-bend distance in sheet metal design
A hole inside the V-die zone bends and ovalises. The formula, a table by thickness, and four fixes when the hole cannot move away from the bend.
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