Step 1: What You'll Need
one 5/16" slot head screw, 1.5" long (this will act as your tamper)
one 5/16" coupling nut (this will hold your tamper)
Step 2: Attach Coupling Nut to the Zippo
Clean both surfaces and remove any oils that may be on them with lighter fluid.
Mix up some JB Weld and apply.
Affix the coupling nut to the bottom of the zippo and let dry for at least 12 hrs
I centered the nut on the bottom of the zippo. If I could do it again I would move the nut further towards one end, so that I could extend the tamper even further without removing it entirely from the coupling nut.
For a cleaner result, tape off any areas of the lighter you don't want to get JB Weld on using masking tape
Step 3: Enjoy
To use the tamper, you can either unscrew it entirely remove the tamper from its holder, or you can leave it attached as pictured.