You will need the following tools to complete this project:
- 7/64" Drill bit
- 5/32" Drill bit
- 7/32" Drill bit
- 3/8" Drill bit
- 5/8" Drill bit
- 10-32 Tap
- 6-32 Tap
- Metal File
In addition you will need some cutting oil and painters tape
In addition to the tools, you will need a 5" x 5.5" x 1/2" piece of aluminum stock, like the one shown here.
You will also need to print the Z-Plate template. Once printed cut out the template.
Use blue painters tape, and attach the template to the stock as shown here.
The actual placement of the template on the stock has a lot of latitude. It's the relationship of the actual holes to one-another that is important.
With an auto-punch, mark each hole location.
Using a 7/64" drill bit, drill a pilot hole in each of the marks you just made.
The stock with the 14 pilot holes should look like the one shown here.
Using a 5/32" drill bit, enlarge the four holes marked with 7/32" on the template.
Later these holes will be tapped with a 10-32 tap.
Using a 7/32" drill bit, enlarge the holes marked 7/32" and 3/8".
Using a 3/8" drill bit, enlarge the holes marked 3/8"
Once all the holes are drill counter sink the holes slightly with a larger drill bit. Here I am using a 5/8" drill bit to do this. Be sure to hit both sides of the hole.
It is recommended that this step is done on the 3/8" holes to keep the shoulders on the mounting screws from hitting the plate when in stalled. The other holes are optional.
Use a metal file to clean the cut edges of the stock. This is an optional step.
Use a 10-32 tap to tap the four holes marked 5/32"
When tapping holes be very careful, as a broken tap will ruin the part. Use oil when tapping, and withdraw every turn or so to remove debris.
Use a 6-32 tap to tap the two holes marked 7/64"
To create a brushed finish, hit all sides of the completed part with an orbital sander and 200 grit paper. This step is completely optional.
This completes the Z-plate. Follow the instructions in the KRMx02 workbook for installation.