Forster Original and Classic Case Trimmer collet sizes

[ohland]

Had to do a little research to determine if the Forster Case Trimmer could accept a 43 Spanish case, and if so, outside neck turn. Short answer, the Classic with a #7 collet should be a spot on match for the 43 Spanish, I can get a custom pilot for $22 (whatever size up to .508 or so), BUT the Outside Neck Trimmer is only available for the .4902 diameter Original Cutter Shaft...
:2 drunk buddies:

Original - 5⅜" long Base
Cutter Shaft: .4902
Following collets only for Original and Power Case Trimmers.
Collet #1 - CT2001 - .532, .473, .379
Collet #2 - CT2002 - .506, .418, .350
Collet #3 - CT2003 - .545, .440, .365
Collet #4 - CT2004 - .605, .310
Note: Custom collet diameters within the size range of .275" to .600"


Classic - 6½" long Base
Cutter shaft: .552 diameter
Following collets are for Classic trimmer only.

Collet #5 - CT2005 - .675, .584
Collet #6 - CT2006 - .660, .545
Collet #7 - CT2007 - .640
Collet #8 - CT2008 - .610
Note: Custom collet diameters within the size range of .275" to .600"

CT Accessories: Pilots for Trimmers & Case Inspectors
Custom Case Trimmer Pilot
CUSTOM MACHINED FOR BULLET DIAMETERS .171" TO .508"

Case Trimmer Accessories: Pilots for Outside Neck Turner
Custom Machined Outside Neck Turner Pilot
CUSTOM NECK TURNER PILOT FOR OT1010

Hardened and precision-ground Outside Neck Turner Pilot (Fig. 2) in place of the regular Case Trimmer Pilot. Order pilots (OT2XXX) separately. Pilots are made .0020” to .0025” smaller than the bullet’s diameter.

[ozarkhillbilly49]

just change the cutter shaft bearing housing out and use a standard shaft. no need for a custom neck turner. works great for a friend neck turning 338 lapua.

[ohland]

just change the cutter shaft bearing housing out and use a standard shaft. no need for a custom neck turner. works great for a friend neck turning 338 lapua.

So what I think you said is take a Classic trimmer with the .552 Cutter Shaft, and replace the bearing (CLCT00-019) and the .552 shaft (CLCT00-CTC400) with the Classic bearing (CT1010-019) and the .4902 shaft (CT1010-CTC400).

Or.. the inverse, take an Original and get the Classic collet holder, the #7 collet, and the custom pilot....

What is the size of the OD for the Classic trimmer collet holder? It should be the same OD as the Original trimmer if this is gonna work. I have three originals downstairs... It would be sweet if I could swap a few parts and turn cases for the 43 Spanish on my Forser.

Oh, Forster did reply today, they said to get the hand held turner... for 20 cases, that would be OK, but swapping might be the way to go...

[ozarkhillbilly49]

collet holders are the same on the forester trimmers. don't know about the 50 bmg trimmer. it mite b different. the outside of the collet holders are different. what i would do is buy the long base classic and use the collet holder for that. then pick up a used original and use the shaft and bearing off it. don't matter if the cutter shaft is dull. it will have a neck turner on it. hope this helps. i ain't the best at expressing my thoughts via the written word.(note screen name. not much education here!!!)

[ohland]

Measured some Forster Trimmers, all Originals... The Collet housing is 1.112" OD. The hole that the case rim enters the collet housing on the old one is .560", newer production should be @ .610"

Noticed that there are two mounting orientations for the housings. The first was (I assume) a very old trimmer, the mounting screw for the housings went straight up (long screws) and the housing screw hole was straight down. The second (maybe newer?) is when Forster realized if they put the housing mount screw through the base at an offset angle, the screw would only have to be long enough to go through the thickness of the "saddle" under the housings...

[ozarkhillbilly49]

yep i do believe the i.d. of the collet housing is the same for both original and classic trimmers now. don't know if you would have to have the long base for the 43 Spanish or if an original base will b long enough for the case and neck turner. hope i have helped and not confused you any.

[ohland]

long base for the 43 Spanish or if an original base will b long enough for the case and neck turner.

I held a 43 Spanish up to a Original with a outside neck turner, it would be pretty tight getting it over the longer neck turning pilot... Probably better with the long er base.Thx for confirmation on the housing. The original housing opening is probably just opened up to .680 I guess for the Classic...

1.110 - .680 is .430 dia on the classic, 1.110 - .610 is .5 dia on the original.

Hell's bells. The Captech rims are .595, I could just open up the collet holder opening a wee bit. Not even 5/8. Well, a 5/8 or a 16mm drill will do it.

[ohland]

Duh... good thing I measured the cases this morning, the Captech 43 Spanish rims are .595, a number 4 bushing (new) does .310 / .605, (old) does .605 only... So if I get the old original, the opening is drilled from .560 to @.600, with a newer Original, it is already .610"....

Short version, the original trimmer, a #4 collet, the long (6 1/2") original base, and a custom pilot will do both length trimming plus neck turning.

[ozarkhillbilly49]

yep. what u said!! can't write fer squat. hope i helped a little bit.