Mr Coeur de Lion Posted October 20, 2010 Share Posted October 20, 2010 My friend is trying to drill a hole through his exterior wall to lay some plumbing. The wall is some 50cm thick and he has hit what seems to be flint in the wall and there is no chance of any drill bit going through it, so I'd assume he needs some sort of diamond cutter or bit. The hole needs to be large enough to take a 50mm pipe.What does he need and what would it be called in French? Link to comment Share on other sites More sharing options...
BIG MAC Posted October 20, 2010 Share Posted October 20, 2010 Core drill possible water cooled ... Link to comment Share on other sites More sharing options...
La Guerriere Posted October 20, 2010 Share Posted October 20, 2010 A core drill is, I believe, a "perceuse carotte" (carrot drill), but I expect it would be v expensive to buy or hire. Easier to make the hole elsewhere or enlarge and remove stones with an ordinary SDS drill and chisel and bad language Link to comment Share on other sites More sharing options...
Danny Posted October 20, 2010 Share Posted October 20, 2010 it is a "Carotteuse"they are for hire in various sizes in hire shops. Normally water cooled.Most but the smallest should be bolted (or somehow fixed) to the wall so that the drill stays exactly straight. You don't want to break the cutter - they are very expensive to replace.You are normally charged by the amount of wear on the cutting edges. You need to go slowly and not force it.I had a similar job (no flint though) and went to see about hiring the tool but in the end I just used an SDS drill and got there slowly, removed stones and patched up with some more stone around the pipe and yes, a fair bit of swearing too.Danny Link to comment Share on other sites More sharing options...
broy Posted October 20, 2010 Share Posted October 20, 2010 Yep, make a big hole. The time it takes to get to hire shop etc will be more than the time to make good around a big hole and a lot cheaper too.But maybe not everyones a cheapo like me and it would be fun to try one of those fancy drills. Link to comment Share on other sites More sharing options...
woolybanana Posted October 20, 2010 Share Posted October 20, 2010 Get hold of five casseurs; make four hold the fifth as a battering ram and smack his head against the wall until the hole is made. if he howls, change battering rams. Make sure they clean up the mess for you.Happy to be of help! Link to comment Share on other sites More sharing options...
Mr Coeur de Lion Posted October 20, 2010 Author Share Posted October 20, 2010 I like wooly's suggestion best :)Thanks, I'll pass the info on. Link to comment Share on other sites More sharing options...
Dave&Olive Posted October 20, 2010 Share Posted October 20, 2010 hi ok just make a big hole on the inside [IMG]http://i83.photobucket.com/albums/j311/daveolive/P1000080.jpg[/IMG] Dave Link to comment Share on other sites More sharing options...
Dave&Olive Posted January 19, 2011 Share Posted January 19, 2011 hi ok forgot the after photo [IMG]http://i83.photobucket.com/albums/j311/daveolive/P1000177.jpg[/IMG] Dave Link to comment Share on other sites More sharing options...
crossy67 Posted January 19, 2011 Share Posted January 19, 2011 Looks very nice Dave but could you sit on a kittens face? Link to comment Share on other sites More sharing options...
Dave&Olive Posted January 19, 2011 Share Posted January 19, 2011 hi ok The wife did say to me " It looks like a cats asre " Dave [:$] Link to comment Share on other sites More sharing options...
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