Not a lot of actual progress to report, but making preparations for putting the radius on the fretboard. Technically, I could move forward with getting the truss rod slot cut, but I've been itching to finish the setup and test the fretboard radius fixture that I have for my edge sander.
There are a number of ways to use this setup, but most commonly, a platen (maybe not the right term) is attached to the bottom of the swingarm, then the fretboard is attached to the platen while keeping the centerline aligned. The other method is to attach the fretboard to the neck, then attach the entire neck to the swingarm. I plan to use both methods, depending on the scenario. In this case, I'm going to use the platen for testing, then most likely use the neck method to actually run the board.
Anyway, right after slotting the fretboard for the Tele, I slotted a 34" scale fretboard in maple to use for this test. I'll use a 9.5" radius for both of them. Since my platen is thicker than the neck, I'll have to move the pivot points accordingly, but this will be a good first run.
If you're not familiar with the setup, this fixture is available from Grizzly and it adds a couple of adjustable overhead arms and a swingarm with adjustable pivot points to their 8 x 80" edge sander. Here I have the platen and fretboard already attached. The platen is attached with recessed machine screws and the fretboard is attached with thin film double sided tape. This is so there is no compression or movement from thicker types of double sided tape. I have the height adjusted so the board is just above, but not touching the sander. This will sand the outside edges of the board without touching the center.
I have a centerline and pencil marking the board to make it easier to see my progress. The belt is 100 grit.
After a few swings back and forth and checking that I'm level end to end (there are adjustment screws under the hooks that I move for this). Good progress.
I then gradually lower the fine tune adjustment screws until I'm kissing the center.
It is very accurate!
So, a few notes during the first use. The fine adjust knobs need to be moved regularly AND evenly during the process. So, partway through the operation I stopped and made some marks on the knobs. This helped immensely to know how far I was moving.
Secondly, the knobs were sometimes turning on their own while the machine was running. Yikes! Only after I was finished did I notice that there are some set screws that can be snugged up to help. Problem is, they are steel set screws against a steel bolt... So, I'm going to find some nylon tipped set screws and replace these soon.
The slots that are milled in the swingarm will only allow around a 10" radius if the fretboard is attached directly to the swingarm. I extended this slot to allow for the use of a thick platen and also marked the arms. I can mark the opposite side for a 1" offset, which would be appropriate for a neck with Fender specs.
That's it for today. I wheeled all of the tools to one side of the garage, brought the snow blower up from the shed and moved the car into the garage in preparation for our first potentially meaningful snowfall this year. So, there won't likely be much progress in the next few days.