Measurements – Page 3 – Seam School – Craft Seaming

Cover Thickness

This is the thickness of the cover (lid). This can be measured using a material thickness gauge. In many cases,

A Tight 1st Operation Roll is when the roll is set too tight (too close to the chuck). This can cause damage

When the first operation roll is too loose the first operation roll will be too open, which can ultimately lead

The lifter plate is the bottom plate that lifts the can up into the end (being held by the chuck). The

The Pin Height is the distance between the bottom of the chuck and the lifter plate. It is set using a

Typically, the can maker will provide the specifications for the seam. It is important to use those values in your

Seamer setup is currently considered an “art form” more than science. There are several settings that need to be perfect

Seam Height is another name for Seam Length, a critical external measurement of the double seam.

Cover Hook Butting is a relatively new term, which determines the coverage of the cover hook in percentage. CH Butting is

Body Hook Butting (or BH Butting) is a calculated percentage determining how much the Body Hook is embedded in to the seaming compound. Body Hook