Steve clear magic , dont weld them up , if your anything like me you will get through one of these every 2 weeks , i keep smashing the red wing nuts to pieces !
The tap pictured is a new model , it used to come with a very small bolt holding it on , it has now been changed to a threaded spindle with a 10 mm nut , it is apparently stronger , i will let you know next week !
Rich P @ F