The CSP-1 S-press has a 7/8-in x 14 tpi (threads per inch) head, and does not accept larger bushings. It can be used directly, as it comes, for reloading with standard 7/8-14 dies as well as bullet swaging, jacket drawing, bullet reducing, and a limited range of small diameter lead wire extrusion.
The CSP-2 Mega Mite has a 1-1/2 in x 12 tpi head, but comes with a 7/8-14 adapter bushing called the "RLA-B" (Reloading Adapter Bushing). You do not have to purchase one separately to use standard reloading dies.
|The CHP-1 Hydro Press also has a 1-1/2 in x 12 tpi head, and also comes with the free 7/8-14 adapter bushing (RLA-B). All Corbin swaging presses will accept standard 7/8-14 reloading dies. All the presses also come with an adapter for the ram, to accept a standard RCBS-type button shell holder. The larger presses include a ram extension adapter which can accept optional 7/8-14 threaded shell holders as well as the standard button shell holder adapter. So, all Corbin swage presses are ready to use with RCBS-style button shell holders (T-slot base) regardless of the fact that the rams have either 5/8-24 or 1.0-12 threads for Corbin swage dies.
Bushings and custom head plates are available, or made to order, to accept different thread sizes.
In the CSP-1 S-press, with standard 7/8-14 head, the only practical way to change thread size is to produce a custom head plate for you. Removal of the head requires careful realignment, which is greatly assisted with the use of a special alignment tool made for either the standard head (if you wish to restore original configuration) or the custom thread size. Such alignment tools are generally found on the webstore, as options, when you order the special thread adapter bushing. Replacing the head also requires special technique, and the right tools, such as a T-handle socket wrench and a plastic faced mallet, and should not be done casually. Heads are aligned by diemakers before the press is shipped. Head changing is not usually recommended, but it can be done with care by a person with good mechanical ability and the proper tools. However, the CSP-1 press can be ordered with a custom head, made and assembled before shipment, and left in this configuration without any problem. A 7/8-14 bushing may be used to bring the thread back to standard size without risking misalignment.
In the CSP-2 and CHP-1 presses, with standard 1-in x 12 thread, a series of adapter bushings can be ordered or custom made if needed, up to a maximum of 1-1/4 x 12 inch. Larger bores or the 1-1/4 x 14 thread will require a custom head plate. The reason a 12 tpi thread works in an adapter and a 14 tpi thread requires a new head plate is simple: there isn't enough metal left between the inside 1-1/4 inch x 14 thread roots and the outside 1-1/2 inch x 12 thread roots as they cross each other. But in the 12 tpi pitch, the threads can be synchronized so that the inside and outside thread roots are opposite the peaks of the other thread, maintaining a constant wall thickness by this trick of expert machining.
Some of the other kinds of adapters for Corbin presses include the following:
To see the other adapters available, and pricing on press heads, look on www.SwageDies.com, then Presses, then S-press accessories for the S-press, and on www.SwageDies.com, then Presses, then H-press accessories for accessories for the -H type presses (CSP-2 Mega Mite, or the CHP-1 Hydro-Press).
|Corbin Presses CSP-2 Mega Mite Other Topics
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