Step 1: Tools and Materials
- Grippy clamp thing
- Small Phillips head screw
- Ballpeen hammer
- Metal punch
- Drill bit sizer
- Drill and bits
- #1 Phillips head driver bit
- Bench vise
- Work piece protectors
Step 2: Clamp Preparation
Step 3: Making a Hole
- A flanged head so more of the clamp base would be covered for a secure hold
- A small shaft that wouldn't require a big hole
- The screw couldn't pass through the wood once mounted
Once I found a screw in my parts stash that met these criteria I checked the diameter of the shaft with a drill bit sizer. This let me choose the proper size bit for drilling the base. In my case this was 3/32".
I secured the clamp in my bench vise with the opening facing the floor. I then used a metal punch and ballpeen hammer to dent a spot in the approximate center of the base. This dent will keep the drill bit from "walking" when the hole is drilled. I then used a power drill and 3/32" bit to drill a hole in the clamp base.
A flat file and a round file were then used clean up the edges of the hole.