Looking mighty fine and going well! When is first light?
I just suggested to a 16" Lightbridge owner this weekend that they consider this design to make it more portable, rather than the traditional truss dob setup. I reckon the Highe/Plettstone/Dobstuff design is my favorite one for scopes 10-18 inches. Only disadvantage is that you cannot use a shroud if you want one (most experienced ATMers don't).
Just to clarify, for the baffling on my scopes opposite and just below the focuser, I have used thin black polypropylene from a plastics place, covered in Protostar adhesive flocking. Works well and holds it shape there.
For the big removable tube around the primary mirror on the 22", this stuff was too floppy to hold shape. Instead, I used black plastic hollow core signboard bent along its length around in a circle. If you try and bend it the other way it kinks, unless you slice the outside along the hollow tubes underneath with a stanley knife. It's very stiff and holds its own weight well.
It is probably overkill and might be too heavy or thick for the baffle behind the secondary on the top end though. But you could just try whatever you can get your hands on the easiest.
