Here's a thread from when I asked for suggestions a while ago: http://www.rcuniverse.com/forum/m_72...tm.htm#7293761

I found that Dan from Details4Scale has some neat 2-piece plastic doohickeys for mounitng pylons etc: http://www.details4scale.com/ - not sure if these parts are shown on his pages, but you can get his contact info there and email / phone him.

I now prefer to use Deltron rather than hardwood for any home-made pylon mounts - taps better, holds the threads better, etc.