Right, have an M5 tap, some light oil, a fine wire brush and a couple of long cable stops that I can cut down (and clean the threads after). All I need now is someone to concrete in my 70-odd patio slabs so I can do some proper (bike) work.
Phosphoric acid? Need to look that one up.
Thanks again to everyone. Will post up the results.
Right, have an M5 tap, some light oil, a fine wire brush and a couple of long cable stops that I can cut down (and clean the threads after). All I need now is someone to concrete in my 70-odd patio slabs so I can do some proper (bike) work.
Phosphoric acid? Need to look that one up.
Thanks again to everyone. Will post up the results.