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ACinSC 
Orange Level
Joined: 16 Dec 2015
Location: South Carolina
Points: 3088
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 Topic: Drilling holes in concrete
Posted: 7 hours 17 minutes ago at 2:43pm |
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Drilled 4 today. Brand new concrete bit. Went well for about an inch. Then it was tough. Does a hammer drill make much difference? I have more to do, Thanks
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Coke-in-MN
Orange Level Access
Joined: 12 Sep 2009
Location: Afton MN
Points: 42061
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Posted: 7 hours 4 minutes ago at 2:56pm |
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Big Difference with a hammer drill -bigger the unit the better and faster the drill works .
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Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.
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Trawler II
Orange Level Access
Joined: 04 Jul 2017
Location: Missouri
Points: 3544
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Posted: 6 hours 33 minutes ago at 3:27pm |
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A rotary hammer drill and SDS bit will be a night and day difference. If you have a lot of holes to drill renting a rotary hammer drill and purchasing a bit is the way to go. SDS bits are a bit expensive compared to standard carbide, with a lot of holes to drill they are a bargain.
Edited by Trawler II - 6 hours 32 minutes ago at 3:28pm
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"Most people find it easier to believe a simple lie, than the complex truth"
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DMiller
Orange Level Access
Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 34542
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Posted: 5 hours 21 minutes ago at 4:39pm |
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If has Creek rock in the mix is like drilling granite.
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ACinSC
Orange Level
Joined: 16 Dec 2015
Location: South Carolina
Points: 3088
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Posted: 3 hours 58 minutes ago at 6:02pm |
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Thanks guys. Good info!
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DougG
Orange Level
Joined: 20 Sep 2009
Location: Mo
Points: 8376
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Posted: 3 hours 52 minutes ago at 6:08pm |
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Creek rock and rebar get in the way- take a punch when it stops and try to break the rock- we use Makita battery powered drills and sds bits , they hold up well - and get used hard at work
Edited by DougG - 3 hours 49 minutes ago at 6:11pm
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Pat the Plumber CIL
Orange Level
Joined: 11 Sep 2009
Location: Springfield,Il
Points: 4971
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Posted: 2 hours 40 minutes ago at 7:20pm |
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What size holes are you drilling? Hammer drill and SDS Bits are the only way to go . Like others have said bigger is better. Rentals can pay for themselves quickly.
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You only need to know 3 things to be a plumber;Crap rolls down hill,Hot is on the left and Don't bite your fingernails
1964 D-17 SIV 3 Pt.WF,1964 D-15 Ser II 3pt.WF ,1960 D-17 SI NF,1956 WD 45 WF.
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omahagreg
Orange Level Access
Joined: 11 Sep 2009
Location: Omaha, Nebraska
Points: 2808
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Posted: 40 minutes ago at 9:20pm |
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Years ago I had almost 60 holes to drill in 2 commercial bathrooms-tile and cement. I started getting 12 holes drilled but wasted 4 bits-masonry in a hammer drill. I said screw it and went straight to Hilti-bought a new SDS drill and their bits! They have a 2 carbide tip where most others are a one carbide tip. Just used one bit on all the rest!
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Greg Kroeker
1950 WD with wide front and Freeman trip loader
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