Step 2Measure and cut the sheet

The keyboard circuit sheets can vary in appearance so unfortunately there is no way of knowing whether you circuit sheets will be as pretty as these.
 

• Dismantle your keyboard and extract your circuit sheets. 
• Roll the sheet into a cylindrical shape and fit into your base.
• Mark where the sheet begins to overlap and cut off the excess

Step 3Tape

Apply clear packing tape to one edge of the sheet, roll it into a cylinder and tape the edges together.  Fold any excess tape over the rim or cut off.