Wow, that's an impressive kink you've got there. What I did was remove the split rings from mine, then press it around the inside edge of the Altoid's tin so that it closely followed that rectangular shape. Then I stuffed the rest of the space with paper towels, closed the lid, sealed it shut and left it sit for several hours. When I opened it, the wire saw seemed to hold that rectangular shape, more or less, without trying to sproing out of the tin.