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Drilling Straight/Plumb Holes .... |
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FREEDGUY
Orange Level Access Joined: 15 Apr 2017 Location: South West Mich Points: 5391 |
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Posted: 26 Apr 2020 at 6:15pm |
in concrete?? I had to mount 4 "plates" of steel with 4 holes/plate onto a concrete slab to install sleeve anchors. I thought I did a decent job of "sighting" the angle of attack, but after driving the anchors in, what a mess . Is there an efficient way to keep the hammer drill "true" ?? Thanks
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shameless dude
Orange Level Joined: 10 Apr 2017 Location: east NE Points: 13611 |
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i always set the anchor bolts in the wet cement when poured with a piece of plywood to hold the bolt straight. i've never had to drill any holes in concrete yet.
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john(MI)
Orange Level Joined: 12 Sep 2009 Location: SE MI Points: 9263 |
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A person used to be able to get an attachment for the front of the drill that kept the drill plumb while sliding forward to drill the hole. I don't know if they are still available but you could try google. I don't know what you would search for though.
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D14, D17, 5020, 612H, CASE 446
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FREEDGUY
Orange Level Access Joined: 15 Apr 2017 Location: South West Mich Points: 5391 |
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Seems like years ago Black and Decker had a drill that had a bubble level incorporated into the handle ??
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GARY(OH/IN)
Orange Level Joined: 19 May 2010 Location: Findlay,Ohio Points: 917 |
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I used to have a good eye for keeping the drill on a 90 degree angle with the floor. These days I can't even drill straight in a pine board.
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FloydKS
Orange Level Joined: 12 Sep 2009 Location: S E Kansas Points: 7926 |
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I have not tried it but I have one of those little levels that hangs on a string... maybe mounted to the top of the drill???
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Holding a grudge is like taking poison and expecting the other person to die
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Grayray
Orange Level Access Joined: 12 Sep 2009 Location: Ambridge PA Points: 3801 |
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Try using a block of wood like a piece of 2x4 or maybe a little thicker. Drill the size hole you need in the 2x4 at drill press to be sure the hole is square and true to the board. Then set this board on the concrete you want to drill and use it as a guide to keep the drill straight.
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Pat the Plumber CIL
Orange Level Joined: 11 Sep 2009 Location: Springfield,Il Points: 4687 |
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I use the longest bit I can and hold an older bubble level against the side of the bit . Usually if you can start them plumb they stay plumb , until the bit hits the side of a hard rock and send it off caddy wampus
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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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HD6GTOM
Orange Level Joined: 30 Nov 2009 Location: MADISON CO IA Points: 6627 |
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My older drill has an attachment to keep it square. I got it at our
Local Ace hardware store years ago. Hope you can find 1. |
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Ted J
Orange Level Joined: 05 Jul 2010 Location: La Crosse, WI Points: 18728 |
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You're probably doing alright the way you are, the problem is (as Pat the Plumber) says, when you hit a rock in the concrete, it sends the bit wherever it wants to go. NOTHING can do you any good. I laid mud for years and if you don't put them in when you pour, it's a pain.
The way I do it is to drill ONE hole, insert the anchor and bolt it in place. Now, using the plate as a guide, drill the second hole and insert anchor and bolt that one in place. Now move to number 3 and then 4 doing the same thing. It's the only way I know and the only one that I've ever seen work. Good luck! |
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17 |
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SteveM C/IL
Orange Level Access Joined: 12 Sep 2009 Location: Shelbyville IL Points: 8035 |
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Ted has it....
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plummerscarin
Orange Level Access Joined: 22 Jun 2015 Location: ia Points: 3169 |
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And here I thought I was the only who does that |
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jaybmiller
Orange Level Access Joined: 12 Sep 2009 Location: Greensville,Ont Points: 21593 |
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yeah TedJ is right agin.... !!! as for ... Seems like years ago Black and Decker had a drill that had a bubble level incorporated into the handle ?? just HOW can you SEE the bubble after you pull the trigger ??? espeically with a hammer drill !!!
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
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IBWD MIke
Orange Level Joined: 08 Apr 2012 Location: Newton Ia. Points: 3485 |
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X3 on Ted's method. Have installed many many at work that way. I hesitate to throw out a number but know on some of the guard rails we have put in took over 50 3/4" anchors. You get tired of drilling holes at that rate.
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