For extra stability I'm considering attaching my 5" MAK on an eq3-2 motorised mount to pier rather than a tripod. So I'm considering building the pier's central mount from either tubular steel or 4" square hardwood. Its easy to attach this to a stable base on the floor, but I'm wondering how to attach the top of the pier to the mount itself.
I'd considered buying two 8" square steel plates (say 1/4 inch thick) and connect these by 8 inch long 3/4" steel bolts. The bottom plate connects to the top of the pier and top plate could attach to the mount. But here it gets tricky.
An example is displayed here:
http://www.skyshed.com/piers.html or
http://www.skyshed.com/gallery.html
Do they make plates to attach eq3 mounts to a pier?