Originally Posted by
Simon Barden
Best to start the build diary and ask questions there, even though its not arrived yet. I only normally say hi here and then ignore further posts, and I know others do as well.
Yes the kits are fully hollow, with a maybe 30mm thick block (very soft wood) glued directly under the bridge area and then a further thin wooden block wedged in (not glued) between the underside of that and the back for a bit more support.
The 'Bigsby' top screws are there more for a bit of sideways stabilisation than anything else and just screw into the ply. As you note, many Bigsbys don't have top fixing screws and are held in place by the tail block screws (there is a decent thickness tail block) and string tension. The kits do have a habit of coming with screws for the top that are far too long for the job and with a solid shaft section below the head at the point where you need the thread to be (don't ask me why!).