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Drilling old concrete fence posts?
I've got a line of old concrete posts bordering my house, I'd like to
put up a wooden fence, but unfortunately they are spaced wrongly and intermittently for panels, so the best thing would be a featheredge lapped fence. Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. I havent tried a diamond drill bit yet, but am not too keen to splash out on one if that is going to wear out after 2 or 3 holes. Any thoughts on what I need? SDS drill with diamond bit? Give up and dig out all the old posts? Thanks for any pointers. Alan. -- To reply by e-mail, change the ' + ' to 'plus'. |
Drilling old concrete fence posts?
A.Lee wrote:
Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. It may be that you are hitting steel reinforcing bar in the post rather than a stone. It it were a stone, a SDS drill and bit would romp through it easily. If it is rebar, then you can get rebar cutting masonry bits that ought to do the job. (Just positioning the hole in a different location will probably help you miss the rebar). -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
Drilling old concrete fence posts?
"A.Lee" wrote in message ... I've got a line of old concrete posts bordering my house, I'd like to put up a wooden fence, but unfortunately they are spaced wrongly and intermittently for panels, so the best thing would be a featheredge lapped fence. Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. I havent tried a diamond drill bit yet, but am not too keen to splash out on one if that is going to wear out after 2 or 3 holes. Any thoughts on what I need? SDS drill with diamond bit? Give up and dig out all the old posts? Thanks for any pointers. Alan. Make panels to fit. It is probably cheaper. Adam |
Drilling old concrete fence posts?
A.Lee wrote:
I've got a line of old concrete posts bordering my house, I'd like to put up a wooden fence, but unfortunately they are spaced wrongly and intermittently for panels, so the best thing would be a featheredge lapped fence. Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. I havent tried a diamond drill bit yet, but am not too keen to splash out on one if that is going to wear out after 2 or 3 holes. Any thoughts on what I need? SDS drill with diamond bit? SDS with a normal masonry bit. Done it loads of times. -- Dave The Medway Handyman www.medwayhandyman.co.uk 01634 717930 07850 597257 |
Drilling old concrete fence posts?
"A.Lee" wrote in message ... I've got a line of old concrete posts bordering my house, I'd like to put up a wooden fence, but unfortunately they are spaced wrongly and intermittently for panels, so the best thing would be a featheredge lapped fence. Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. I havent tried a diamond drill bit yet, but am not too keen to splash out on one if that is going to wear out after 2 or 3 holes. Any thoughts on what I need? SDS drill with diamond bit? Give up and dig out all the old posts? Thanks for any pointers. Alan. Get some galvanised steel strapping from a builders merchant and wrap it around the post and screw it to the arris rail. |
Drilling old concrete fence posts?
The message
from John Rumm contains these words: If it is rebar, then you can get rebar cutting masonry bits that ought to do the job. (Just positioning the hole in a different location will probably help you miss the rebar). Yes, but the holes already drilled will let in water, the rebar will rust and the concrete post will start to disintegrate. Any holes drilled need filling pdq. Any others drilled in the post might cause a long term problem even if they don't hit the rebar. -- Roger Chapman |
Drilling old concrete fence posts?
A.Lee wrote:
I've got a line of old concrete posts bordering my house, I'd like to put up a wooden fence, but unfortunately they are spaced wrongly and intermittently for panels, so the best thing would be a featheredge lapped fence. Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. I havent tried a diamond drill bit yet, but am not too keen to splash out on one if that is going to wear out after 2 or 3 holes. Any thoughts on what I need? SDS drill with diamond bit? Give up and dig out all the old posts? Thanks for any pointers. Alan. If the posts are morticed for arris rails, there are arris rail bracket which will fit into the morticee so that you can screw them to the new arris rails Malcolm |
Drilling old concrete fence posts?
The Medway Handyman wrote:
A.Lee wrote: I've got a line of old concrete posts ... Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. SDS drill with diamond bit? SDS with a normal masonry bit. Done it loads of times. No being picky, but why is a SDS drill with a normal masonry bit, better than a normal hammer drill with the same bit? Vibrates/hammers more, or something else? Thanks Alan. -- To reply by e-mail, change the ' + ' to 'plus'. |
Drilling old concrete fence posts?
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Drilling old concrete fence posts?
"A.Lee" wrote in message ... The Medway Handyman wrote: A.Lee wrote: I've got a line of old concrete posts ... Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. SDS drill with diamond bit? SDS with a normal masonry bit. Done it loads of times. No being picky, but why is a SDS drill with a normal masonry bit, better than a normal hammer drill with the same bit? Vibrates/hammers more, or something else? Thanks Alan. -- To reply by e-mail, change the ' + ' to 'plus'. It's all a matter of 'oomph' - much more 'oomph' in the hammer action of an sds drill than the cam operated ones on 'hammer drills'. Most SDS drills use a pneumatic coupling arrangement giving greater travel. AWEM |
Drilling old concrete fence posts?
"Andrew Mawson" wrote in
: "A.Lee" wrote in message ... The Medway Handyman wrote: A.Lee wrote: I've got a line of old concrete posts ... Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. SDS drill with diamond bit? SDS with a normal masonry bit. Done it loads of times. These posts normally have reinforcing bars in them just to make life more difficult Chris |
Drilling old concrete fence posts?
A.Lee wrote:
No being picky, but why is a SDS drill with a normal masonry bit, better than a normal hammer drill with the same bit? Vibrates/hammers more, or something else? http://www.diyfaq.org.uk/powertools/sds.htm -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
Drilling old concrete fence posts?
Chris wrote:
"Andrew Mawson" wrote in : "A.Lee" wrote in message ... The Medway Handyman wrote: A.Lee wrote: I've got a line of old concrete posts ... Trouble is, I cannot drill into these posts to screw in the cross battens. Invariably I get in half inch or so, hit a stone, then the drill rapdily goes blunt, and goes no further. SDS drill with diamond bit? SDS with a normal masonry bit. Done it loads of times. These posts normally have reinforcing bars in them just to make life more difficult True, but drilling a 30mm deep hole for a plastic plug shouldn't reach the rebar. -- Dave The Medway Handyman www.medwayhandyman.co.uk 01634 717930 07850 597257 |
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