Key facts
- Manuals
- 1
- Languages
- EN
- Last added
- 2026-09-29
Featured Corbin manuals
Corbin JMK-1-S Jacket Maker User Manual
This manual describes the Corbin JMK-1-S Bullet Jacket Making Kit, which works with the Corbin S‑Press to produce .452‑caliber jackets from 1‑inch wide copper strip. It details the required dies, copper strip preparation, and the sequence of operations—disk cutting, cupping, drawing, and trimming.
Operational steps include using the Disk Cutter Die to cut disks, the cupping die to form short cups, successive draw dies (JRD‑2‑S, JMK‑2‑S) to reduce the cup to the final jacket size, and the ET‑2‑S adjustable trim die to finish the mouth. The kit can be extended to smaller calibers down to .10 with additional draw and trim die pairs.
Covers: Introduction · Materials and Strip Preparation · Disk Cutting · Cupping Process · First and Second Draw · Trimming the Jacket
Latest Corbin manuals
Corbin JMK-1-S Jacket Maker User Manual
User Manual 4 pages · 176 KB · ENThe Corbin JMK-1-S Jacket Maker manual explains how to cut, cup, draw and trim precision bullet jackets using the kit and compatible dies.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Corbin manuals
What press settings are used for the initial cupping operation?
Cupping is performed in short‑stroke mode with a 2‑inch ram travel, using the cupping die and spring‑supported guide.
How are the jackets trimmed to the correct length?
The ET‑2‑S adjustable trim die snips off the rough mouth section, leaving an evenly trimmed jacket of the desired length.