Materials:
        - Corks
 - Pipe clamp (size appropriate for coaster or trivet)
 - Screwdriver
 - polyurethane
 
Instructions:
- Place your clamp onto a firm surface.
 - Fill inside clamp with corks standing upright. They need to be the same height, but can be different shapes or turned upside down to fit more snug.
 - Once the corks are firmly fitted inside the clamp, slide the clamp halfway up sides.
 - Tighten clamp with screwdriver so no corks can drop out.
 - Polyurethane & leave to dry.
 



