This one stands out from a fairly weak slate of promo clips and roll-forming b-roll. It documents a specific cold-forming operation: taking a 5mm round wire stock and squeezing it into a precise 1mm × 4mm rectangular profile through a progressive stamping die.

What makes this worth watching is the geometry: a 5mm circle has a cross-sectional area of about 19.6mm², while a 1×4 rectangle is only 4mm². That means the material isn't just being reshaped — it's being displaced and extruded along the length of the part. Watching how the die manages metal flow without cracking, folding, or trapping air pockets is a small masterclass in why stamping engineers care so much about progressive stages, lubrication, and tonnage curves.

For anyone making fasteners, terminals, or any flat-on-flat contact part starting from round wire stock, this is the kind of operation that determines whether you can hit tolerance at volume. It's also a useful demonstration of why "alternative to machining" claims hold up for high-volume parts — stamped geometry like this would be wildly expensive to mill.

Caveat: the channel is small and the production is rough, but the actual process footage is the real deal.