Manual

FORSTER ORIGINAL CASE TRIMMER INSTRUCTIONS
www.forsterproducts.com
Fasten your Forster Case Trimmer securely to a bench or board to allow the free use of both hands. (If the Case
Trimmer is mounted on a board, it can be held in a vise so that the Case Trimmer can easily be set up or put away.)
Select the proper Pilot and Collet for the case you will trim. This information is available on our Web site.
Insert the Pilot into the Cutter Shaft (-CTC400). Press the Pilot firmly against the cutter teeth and lock it in place by tight-
ening the Pilot Set Screw (-015) with the 5/64” allen wrench provided.
Remove the Collet Screw (-012) from the Collet Housing (-013). Apply a small amount of grease to the front face,
tapered portion and base of the Collet. Insert the proper Collet into the Collet Screw (-012). Replace the Collet Screw
(-012) and Collet into the Collet Housing (-013).
With tension on the Collet released, insert the base of the case to be trimmed into the Collet. Move the Pilot into the
neck of the case. With one hand on the Crank (-023), push the base of the case against the shoulder of the Collet, then
tighten the Collet Screw (-012) with the other hand. (To obtain accurate results, the base of the case must consistently
be held against the shoulder of the Collet.)
To adjust for case length, set the Stop Collar Fine Adjustment Screw (-017) to protrude about 1/32". Slide the Stop Collar
(-020) toward the Bearing (-019) until the Fine Adjustment Screw (-017) is in contact with the Bearing (-019). Be sure the
cutter teeth are in contact with the case neck, then tighten the Stop Collar Coarse Adjustment Set Screw (-016). Take a
trial cut and remove the case to measure its length. Refer to a reliable manual for correct case lengths.
Fine adjustments can be made by turning the Stop Collar Fine Adjustment Screw (-017). Turn the screw clockwise to
increase case length or counterclockwise to decrease case length. One complete turn of the Fine Adjustment Screw
(-017) equals .032” in case length. Once the Case Trimmer is fine-adjusted for case length, lock the Stop Collar Fine
Adjustment Screw (-017) in place with the Stop Collar Fine Adjustment Lock Screw (-015).
Occasionally lubricate the Cutter Shaft (-CTC400) with a drop of light oil.
1)
2)
3)
4)
5)
6)
7)
8)
Page 1
Buna-N O-Ring
(CT1010-014)
Coarse Adjustment
Set Screw
(Bearing Side-Long-CT1010-024)
(Housing Side-Short-CT1010-025)
Base Screw
Collet Screw
Handle
(CT1010-011)
Collet Screw
(CT1010-012)
Collet
Collet Housing
(CT1010-013)
Base
(CT1010-CTB101)
(CT1010-016)
Stop Collar
(CT1010-023)
Crank
Knob Screw
(CT1010-022)
Knob
(CT1010-021)
Stop Collar
Fine Adjustment Screw
(CT1010-017)
Stop Collar
(CT1010-020)
Stop Collar
Fine Adjustment
Lock Screw
(CT1010-015)
Cutter Shaft
(CT1010-CTC400)
Bearing
(CT1010-019)
Pilot Set Screw
(CT1010-015)
Pilot