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Author Topic: Power trimming brass.  (Read 338 times)

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Offline fnbrowning

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Power trimming brass.
« on: December 30, 2003, 04:39:32 PM »
As you may know, many trimmers have an option that allows the use of a drill to drive the trimmer or reamer. There are products from Forster and Lyman that convert a drill press into a power trimmer.

Drills and drill presses have many different adjustable speed settings.
I would like to know whether my drill press has a spindle speed suitable for trimming and reaming brass cases.

Please tell me what you consider the optimum, or most recommended spindle speed for a brass trimming operation and the maximum fastest allowable speed, so I might determine if my press has a usable rpm adjustment.

Thanks! :D
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Offline richp41

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Power trimming brass.
« Reply #1 on: December 31, 2003, 06:06:27 AM »
600 to 800 rpm seem to work well for me. At 1000 rpm things get a little busy and unmanageable. I would guess that anything down as low as 3- 400 rpm will work as well because case brass is pretty easy to cut. Rich P
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Offline Graycg

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Power trimming brass.
« Reply #2 on: December 31, 2003, 07:33:08 AM »
I believe that the Forster conversion piece's instructions recommend a minimum of 250 rpms.

regards,
 Graycg
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