We want to use 1/2" copper pipe as deck balusters, but would like to use some type of connector to attatch it to the rail system. However, the commonly available "dekorator" type connectors are too large as the inside of the pipe is 1/2". We are working with ipe and would prefer not to drill holes in it to receive the ends of the pipe. Any ideas for something that would be the right size, strong, and be able to withstand midwestern temp ranges?