Not sure what people call it but I've seen some pics of it in various threads... can't recall which ones. It's for trying to get a good coil with the screw that holds the end of the coil and lets you wrap it? I want to make one of these for myself as I'm finding it difficult to get really tight coils that are close to each other for micro coils. Even when I get a decent coil using a straightened out paper pin, they still aren't close enough and trying to smush them together with tweezers or my hand still leaves a tiny bit of space between the coils.





