I mentioned in this
post that I had broken my SPG780 top spigot, and got some good feedback on how to repair it.
But I opted to let it sit, broken, for about 5 years before doing something about it.
The sleeve options would be a good fix, but they weren't really the direction I wanted to head, as I wanted all three sections of the rod to be the same length. The metal ferrule option would do the trick, but I wanted to keep the rod all spigots. Knowing I had another blank that I could cut to make a new mid-section, I figured I had nothing to lose by tinkering with the old mid that had the broken section of ferrule in it.
I tried boiling the top section to heat the old epoxy I'd used and pushing on it with a small nail to try backing it out. No go.
Then I had the idea that I could create a new spigot by drilling a precise hole in the old one, and putting in a new carbon rod into that section, cylindrical into the mid section, and tapered on the top. A low probability of success, but I figured it would be fun to try. I measured the ID of the blank at the break (from the top rod section) and ordered drill bits sized to match.
I trimmed the broken bits of the spigot flush with the blank, and then tried my best to drill straight. (this was back in January of 2019, so the project hasn't been fast paced)
Then to my surprise, the drill pushed free. Turns out that I'd drilled out enough of the spigot and heated the epoxy through drilling enough that the remnant of the spigot pushed through!
Happy day. Now I could insert a new spigot through the butt of the rod section as intended. I just needed to figure what material to use for the spigot. I opted for some carbon kite building sections.
I've got it dry fit. There is a slight tick in the mid section when dry casting, but that will probably be taken up by the epoxy used to fix it in place, though I should take the time to get it right with some masking tape to build the lower thickness up to the blank ID.
Hope you found this entertaining, it's good to get some old projects moved off of the queue.