Colin O'Flynn @oflynn.com · Jun 9 Here is my former M4 tap, now with a hole down the center. 5 likes 1 replies ? Reply Replies Colin O'Flynn · Jun 9 Here are the broken bits of the tap that I can then knock out of the hole. Didn't even have to clean it up - bolt threaded in (I broke the tap at the end!). Now to get another tap tomorrow and finish it....