I need to undo the connecting screws which are holding door handles on. After I first fitted them (many years ago) I got tired of them continually coming loose, so I applied what was described as a removable thread-locking fluid; for some of them, this has turned out to be more permanent than I wanted.
I have tried applying heat (using a 50W soldering iron on one end and a 25W ditto on the other) but that hasn't worked.
All the usual suggestions for removing stubborn screws assume that the thread is firmly attached and rigid; in my situation, the screws will rotate together and I cannot apply enough torque (holding a slotted screwdriver into each end) to break the seal. I have removed one of the screws that will come apart - see photos - there is about 10mm of thread that needs to be undone. The bolts are 4mm diameter and 40 mm long, with domed heads and screwdriver slots 1mm wide and 7mm across. The material is not very strong - on some of them it has got a bit chewed up.
I have tried applying heat (using a 50W soldering iron on one end and a 25W ditto on the other) but that hasn't worked.
All the usual suggestions for removing stubborn screws assume that the thread is firmly attached and rigid; in my situation, the screws will rotate together and I cannot apply enough torque (holding a slotted screwdriver into each end) to break the seal. I have removed one of the screws that will come apart - see photos - there is about 10mm of thread that needs to be undone. The bolts are 4mm diameter and 40 mm long, with domed heads and screwdriver slots 1mm wide and 7mm across. The material is not very strong - on some of them it has got a bit chewed up.