Ron- Would like to add my compliments on your philosophy of building... while I would love to have a machine shop, my power tools are somewhat limited in number, so I make do with what I have. I end up having to use files on aluminum more than someone else might who has a mill, but a table disc sander works great for cleaning up the edges that a saber saw with good blades leaves in 1/4" thick (or more) aluminum. If you understand what needs to be done, frequently there are more than one way to accomplish a goal. Taking each piece as a project in itself- and not being in a hurry lends itself to worthy projects when finally completed. I myself am just finishing up a 4.25" Schief, and it has been a fun challenge to build over the course of about 9 months. Rushing leads to shoddy worksmanship; your telescopes, on the other hand, stand as an example of what can be done with skilled hands and simple tools. Wes