Quote Originally Posted by Nr1madman View Post
Hmm I'm at this stage myself but I was thinking about drilling through the bottom extrusion and use tee nuts in the upper extrusion and cap head screws with washers to fill out the t slots. Then use the holes I drilled to tighten the screws. What do you all say about that?

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Maybe this way the conection between the two extrution is more rigid , because the bolts run all the leght of the upper extrution and not just hold it with the lower one only from the base,just a thought....