Vertical caving terminology and methods > Rigging methods and equipment
A tool that can cut screw threads into a spit nut or onto a through bolt that has begun to rust. This might be used to allow a spit bolt to screw into the spit nut, or a nut to be screwed onto a through bolt, so that it can be reused instead of being replaced. While this can be used to avoid bolt rash, it is far less safe than using a new anchor, since it means relying on a screw thread that has been at least partly compromised by rust. There are different designs of tools for cutting screw threads into a nut or bolt, depending on the type of anchor.
<< Bolting tool, bolt driver, spit driver | Star drill, star drilling chisel, twist drill, Rawlplug chisel, Rawlplug tool, core drill >>
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