I've been using my lathe to make tool handles, typically out of beech, pecan, and sometimes even hackberry. Recently, I crafted a wooden head for a 1950s Stanley handyman brace, which belongs to my grandmother. While she won't use it, it'll be stored in her garage. I used dry live oak for the head, which attaches to the brace with a threaded part that allows it to spin. However, I've noticed that it has started splitting in two places since I finished it a couple of days ago, and it seems to be getting worse. I've only dealt with pieces that break completely before, so this splitting is new to me. I know that oak is prone to splitting, and I had previously asked if using live oak was a good idea, but didn't get any responses. I understand ferrules can help prevent splitting on friction-fitted handles, but I didn't expect this with a threaded attachment. How can I fix this or should I consider making a ferrule?
2 Answers
It sounds like the fit of your threaded piece might be too tight, which could be putting pressure on the wood and causing it to crack. It might help to ensure that your cutting and fitting are not introducing stress. Also, check if there are any micro cracks at the ends of the wood that could worsen when the piece is used. I’ve made plenty of live oak tools, and as long as they're below 8% moisture, they hold up well without cracking.
If you're considering a ferrule, I think that could really help stabilize the head if you decide to make a new one.
Thanks for sharing! That split looks like it could be from too much pressure, but also keep an eye on the thin one; that could widen after some use.
Hey! First off, how dry was the wood when you started? The moisture content plays a huge role in whether oak will split or not. If it was in a firewood pile, it should be okay, but keep in mind that live oak can be tricky as it dries. I’d suggest checking the moisture level to see if that could be the issue.
It feels completely dry to me. It’s been sitting in that pile for years here in Texas.
Here's a photo of the splits—the worst of the two is pretty noticeable. What do you think?