I've been using the Loctite 5 minute epoxy from Lowes for all of my pen work, tubes, segmenting, ect. But have been having a terrible time gluing up segmented blanks with it, when using aluminum in the blanks. Did two yesterday. Scuffed the aluminum with sandpaper, nice square cuts on the wood pieces with my new (to me) table saw. Clamped them up and let the set overnight, in my warm house. When I went to drill them, they instantly came apart, which caused considerable grief and wasted time. Any suggestion on how to fix this are appreciated. I think I'm going to try brass on the next one, instead of aluminum. I've never really had a problem on earlier pens when just gluing wood to wood.