Measurements – Seam School – Craft Seaming

Curl Radius

On a finished, unseamed end, the curl radius is the radius of the end from the cut edge to the start of

Uncurling refers to the manual process of physically cutting and straightening the end curl in order to measure the curl

On a finished, unseamed end, curl height is the height from the cut edge to the top of the seaming panel.

On an uncurled end, Curl Width is the distance from the straightened cut edge to the chuck fit. This measurement,

A Tight 2nd Operation Roll setting is when the roll is set too tight (too close to the chuck) for

A Loose 2nd Operation Roll setting is when the roll is set too loose (too far away off the chuck) for

A Pin Height Gauge (or planer gauge) is a typically used to set up the seamer’s pin height. Pin Height Gauges

In the absence of a Clearance Gauge, a Roll Height Gauge can be used to adjust the roll’s height of the chuck.

The Cover/End/Lid Curl is the round edge of the cover that becomes the Cover Hook during the 1st Seaming Operation. For a

Physically tearing down a seam is a risky procedure that can cause injuries and long term harm (carpal tunnel syndrome). The