Folder by Tom Anderson

pic14.jpg Reaming the Pivot Holes
The pivot hole in each scale is then precision reamed - The lock side for a press-fit and the opposite side for clearance

pic15.jpg Counterboring
Both frame scales are then counterbored to allow for clearance of the pivot head and pivot screw

pic16.jpg Installing the Pivot
The pivot pin is then pressed into place.

pic17.jpg Match-marking the Screw Holes
The two scales are clamped together for match drilling of the rear screw holes.

pic18.jpg Match-marking the Screw Holes
Using the tap drill, the screw hole locations are marked. There is no need to drill through at this time

pic19.jpg Match-marks
Here is the opposite scale, with the partially drilled match marks.

pic20.jpg Countersinking
The clearance (body) drill is used to provide the clearance for the screws and the outside face is countersunk to allow adequate screw head clearance

pic21.jpg Tapping
The screw holes in the lock side scale are threaded. A tapping head is used for accuracy. Lubricant is used to prevent the titanium from galling with the tap during threading.

pic22.jpg Installation of the Stop Pin
After the two scales are attached together with screws, the stop pin hole is match drilled and reamed using a procedure similar to that used for the pivot. The stop pin is then pressed into place

pic23.jpg Profiling the Handle
With everything together, profiling of the scales is performed on a contact wheel using a 60 grit ceramic belt at reduced speed.

pic24.jpg Adding Spacers
Spacers are added to simulate the final frame thickness. The large disc surrounding the pivot is the same thickness as the blade and washers, combined

pic25.jpg Assembly with Spacers
The two scales are assembled.You can see that the stop pin and frame screws need to be shortened

pic26.jpg Flush Grinding the Front Side
The stop pin is ground flush, starting with a coarse belt and finishing on the disc sander

pic27.jpg Flush Grinding the Back Side
The back side of the assembly also get ground flush in The projecting screws and adjacent area below the pivot is also ground flush. The basic handle assembly is now ready for initial fitting of the blade

pic28.jpg Blade Layout
The blade stock is laid out using the MicartaŽ template and and Ultra-Fine SharpieŽ marker, allowing for excess stock at the tang

Liner lock folder page 3