Insert a drill bit through the hole in the pipe wall to make a hole in the positive electrode screen
Insert a pointed object such as a small drill bit through the hole from the outside and push it through the mesh. The drill bit will move the mesh strands aside to create the hole rather than breaking them. This hole needs to accommodate a 10/24 screw that will be inserted through it, so be sure it is the correct size. Remove the drill bit and replace it momentarily with the 10/24 screw to hold the mesh in position while you make the hole on the opposite side of the cylinder. Create this second hole the same way as the first. Take care doing this so that the cylinder retains its shape and the holes are correctly aligned.
Slip out the screw and the mesh cylinder
Take a nickel alloy washer, place it on a 10/24 screw and insert the screw through one of the holes in the mesh cylinder, with the head of the screw and the nickel washer on the inside of the cylinder. Then slip a silicone rubber washer on the outside of the cylinder over the screw.
