THREADED INSERTS

If a concealed threaded insert is spinning inside its housing, especially if it’s made of brass, try warming it up so that it expands and grips, allowing the bolt that’s threaded into it to be unwound and the insert removed. This isn’t always so easy, especially if the insert is fitted into plastic, so heat from a blowtorch isn’t possible. Instead, use an impact driver or similar tool to spin the bolt that’s threaded into the insert at high speed. This will create heat, allowing the insert to expand.