Add 3-Way Case Mouth Cutter to Your Forster Trimmer
We know many of you guys have a Forster case trimmer (hand lathe) sitting on your reloading bench. This tool does a good job of trimming cases to length. But did you know that an inexpensive accessory will allow your Forster case trimmer to chamfer while it cuts? Here’s the skinny on the 3-way head for the Forster case trimmer.
Tool Cuts Brass to Length, and Chamfers Inside and Outside
Forster’s 3-in-1 Carbide Case Mouth Cutter works with all existing Forster case trimmers. This unit does three jobs at the same time. It trims the case to length, it puts a 14-degree chamfer on the INSIDE of the neck, AND (last but not least), it cuts a 30-degree chamfer on the OUTSIDE of the neck. It does this all quickly and efficiently — in a matter of a few seconds. We tested the new tool ourselves on a few cases. The tool is solid and well made. The carbide cutting tips do perform a very clean cut. Be aware, however, if you have turned your necks already, you may have to reset the blade positions before you start trimming your brass.
Forster’s CFO, Robert Ruch, demonstrates the 3-in-1 case trimming/chamfering tool in the video above. As you can see, the tool turns very smoothly (no chatter). The actual cutting time, per case, is just a few seconds. The tool has an MSRP of $88.00, but it sells for around $65.00 to $70.00 at major vendors. Forster’s 3-in-1 Carbide cutting tool works with all existing Forster case trimmers and other hand lathes with a .490″ shaft diameter. The unit fits over the cutter shaft and secures with one set screw. The 3-in-1 cutter is available for five (5) calibers: .224, .243 (6mm), .264 (6.5mm), .284 (7mm), and .308.
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Tags: Case Mouth, Cutter, Forster, Robert Ruch, Trimmer
I have often wondered if the cutting head is compatible with Reddings timing lathe. I know that the Hornady and RCBS cutting heads all work on the Redding.
The funny thing is that the OLD Redding trimmer had a FIXED blade. The case heads went in a stepped collet attached to the crank-handle).
The cute part was that you could adjust the blade to cut “square, inside chamfer or outside chamfer only, or trim, inside and outside chamfer all at once.
The weak points were the collets were VERY hard and would occasionally fracture, and the handle became VERY uncomfortable after a few hundred cases.
I ended up mounting the spindle with the cutter blade in the chuck of a big drill press and using Lee Zip-Trim shell-holders and their Spigots in a small machine vise, to build the worlds biggest .223 case trimmer.
I also have a Lyman trimmer, but it leaves burrs on the case ends and these get removed by a “hand” type inside / outside chamfer tool mounted in the chuck of my small lathe.
Crude but effective.
A motorized “one-shot” version of the OLD Redding trimmer would be a seller to those who have better things to do than prepare cases in a zillion steps.
I have wondered the same about compatability woth other trimmers. RCBS Lyman Redding are all cross compatable. Anybody know?
You sound like a great candidate for a Giraud. It’s light years ahead of anything else on the market.
I bought three of these in different calibers and found them to be surprisingly good…just do not lose any of the tiny screws.
Not a bad idea, I just measured the shaft on my RCBS and it is .493. So that makes it kind of interchangeable but I’m not one to stick a pilot in my neck any more, scars them up too bad. Carbide would be a definite plus.
Next someone should start making carbide pilots.
Also I wonder if this thing fits a L.E. Wilson trimmer.