1. Identify the machine
Start with maker, model, seaming head/station, number of heads and the relevant tooling interface. Machine identity is a private engineering input—not public proof of compatibility.
2. Identify the can
Capture nominal diameter, material, height where relevant, flange/body details and any lawful container specification.
3. Identify the end
Record end type/designation, nominal diameter, material, thickness if known, and relevant curl/countersink geometry. When needed, use a lawful end sample or customer-authorized specification.
4. Separate the three tooling references
| Tooling | Review focus |
|---|---|
| Chuck | Profile, wall, lip, mounting, material and fitment |
| First-operation roll | Deep/narrow forming groove, interface and wear condition |
| Second-operation roll | Shallow/wide tightening groove, interface and wear condition |
5. Establish a lawful reference path
Possible inputs include customer-owned drawings, customer-authorized samples, existing tooling measurements or an agreed non-confidential specification. Do not assume an OEM confidential drawing may be shared or reproduced.
6. Define the manufacturing & inspection scope
Where relevant, agree material, hardness, heat treatment, coating, finish, dimensional/profile inspection, traceability and first-article documentation.
7. Trial under the actual application
Mechanical fit and tooling inspection come before production acceptance. The final double seam is evaluated on the actual machine with the actual can and end under the plant's controlled setup.