3/4" Copper Radiator end cap, Length of wire, wrap the wire around the cap in double Strand and loop through and over the Hive tool to secure it.
Fill cap with Oxalic Acid (Apibloxal). Light Blow torch, take out Correx broad from SBB.
Hold Copper cap under the SBB and place blow torch against copper cap.
Oxalic acid is the correct measurement in the Copper cap - heating with the blow torch until all OA is evaporated about 2 mins.
Job done.
Blow torch and cylinder form hardware store, and Copper Rad cap, Wire and Hive tool I had
Total Cost: £27.69
£22 Blow Torch http://www.diy.com/departments/at2071h-gosystem-blow-torch/30062_BQ.prd
£1.07 2 copper End Feed Stop End (Dia)15 mm
£4.66 Rothenberger 175G Butane/Propane Mixed Gas Cylinder
http://www.diy.com/departments/rothenberger-175g-butane/propane-mixed-gas-cylinder/279467_BQ.prd?icamp=recs
http://www.diy.com/departments/end-feed-stop-end-dia15-mm-pack-of-2/203778_BQ.prd