Research
Gates that break off in the mold
A mold can be made so each part breaks off its leftover plastic as the mold opens.
Industry source
Mold design guides published by resin suppliers
Belt with a box counter
Makers sell a short belt with a counter that stops it at each full box, so nobody counts parts.
Supplier's claim
What makers of part conveyors for molding plants say of their own equipment
Our own estimates
We estimate the share of hours freed. An hour of timing at one press would give the real share.
Our estimate
Our estimate