Recent Topics
New TV Audio Question
by Toros - 12/16/19 01:25 AM
is on car rotor cutting the best method?
by WhyMe - 12/16/19 12:37 AM
Found a Good deal!!!
by GuinnessGuy - 12/15/19 11:28 PM
Serpentine Belt Change
by Propflux01 - 12/15/19 08:59 PM
QS HM 10W-40
by kstanf150 - 12/15/19 08:29 PM
4.5" Angle Grinder
by TheLawnRanger - 12/15/19 07:51 PM
Cooper CS5 Ultra Touring
by Warstud - 12/15/19 07:39 PM
Highway power loss
by HyundaiAbuser - 12/15/19 07:21 PM
General truck tires
by spasm3 - 12/15/19 07:18 PM
Alternative uses for CVT fluid?
by stroo - 12/15/19 05:57 PM
CANbus mileage editor
by cwilliamsws6 - 12/15/19 05:56 PM
Fed ex
by Chris142 - 12/15/19 05:53 PM
New oil treatment from Colgin
by qball16 - 12/15/19 05:36 PM
Discount Tire Direct $80 Flash Sale
by BePrepared - 12/15/19 05:16 PM
Bleed and refill?
by cwilliamsws6 - 12/15/19 04:19 PM
Pies: which ones do you love?
by 53' Stude - 12/15/19 02:32 PM
Honda Ridgeline ZF 9 Speed
by dakota99 - 12/15/19 12:02 PM
Selling my dump trailer
by Sunnyinhollister - 12/15/19 11:43 AM
Newest Members
bjonga, theman5142, 750IX, Tzam, tjl5709
70138 Registered Users
Who's Online Now
23 registered members (adams355, 4WD, BlakeB, carviewsonic, 4 invisible), 631 guests, and 19 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics298,855
Posts5,142,667
Members70,138
Most Online3,589
Nov 2nd, 2019
Donate to BITOG
Print Thread
Hop To
Drilling into concrete #5036253 03/08/19 02:56 PM
Joined: Apr 2012
Posts: 2,958
B
buck91 Offline OP
OP Offline
B
Joined: Apr 2012
Posts: 2,958
Need to make some 5/8” holes in a concrete slab. I have a 5/8” masonry bit which will fit my 1/2” chuck on my hammer drill. What I am unsure of is whether concrete would benefit from a pilot hole or if that would negatively impact the finished hole or drilling process?


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Drilling into concrete [Re: buck91] #5036266 03/08/19 03:04 PM
Joined: Nov 2008
Posts: 992
C
CELICA_XX Offline
Offline
C
Joined: Nov 2008
Posts: 992
I've never used a pilot hole, just from my experience drilling into cinder blocks.


15 Toyota Prius - M1 EP 0w20 SN+
06 Acura MDX - M1 EP HM 5w30 SN+
02 Toyota ECHO - Valv MaxLife Syn 5w30 SN
97 Lexus LX450 - M1 EP HM 5w30 SN+
93 Lexus LS400 - M1 EP HM 5w30 SN+
Re: Drilling into concrete [Re: buck91] #5036274 03/08/19 03:11 PM
Joined: Sep 2009
Posts: 2,267
B
BigCahuna Offline
Offline
B
Joined: Sep 2009
Posts: 2,267
I've drilled a million holes in concrete and the thing that causes the most grief, is hitting a bluestone or a piece of rebar.,,

Re: Drilling into concrete [Re: buck91] #5036280 03/08/19 03:18 PM
Joined: Jan 2016
Posts: 399
B
barryh Offline
Offline
B
Joined: Jan 2016
Posts: 399
As masonry drills can wander, I always use a pilot hole for accuracy and it drills easier particularly if your hammer drill is not overly powerful.


Barry

1979 BMW R45 (Triple QX 5W40)
2009 Mercedes C180K (MB oil 229.5 5W40)
Re: Drilling into concrete [Re: BigCahuna] #5036362 03/08/19 04:21 PM
Joined: Jan 2019
Posts: 40
H
HighbrowHillbill Offline
Offline
H
Joined: Jan 2019
Posts: 40
Originally Posted by BigCahuna
I've drilled a million holes in concrete and the thing that causes the most grief, is hitting a bluestone or a piece of rebar.,,

This.


05' Ram 5.9 Cummins
11' Infiniti QX56
Re: Drilling into concrete [Re: buck91] #5036376 03/08/19 04:33 PM
Joined: Mar 2014
Posts: 4,261
L
Leo99 Offline
Offline
L
Joined: Mar 2014
Posts: 4,261
Not all hammer drills are the same. I had a Craftsmen and I struggled to drill into my foundation to hang a TV. It died and I picked up a cheap HF hammer drill. That cheap HF hammer drill is way more powerful than the Craftsmen.

Although, and me an concrete drilling don't get along that well. Can't tell you how many times I've drilled the hole and need another 1/4 inch and it just won't go any deeper.


Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles (RIP)
2004 Corolla 125,000 miles
2004 Rav4 392,000 miles
2015 Camry 90,000 miles
Re: Drilling into concrete [Re: buck91] #5036565 03/08/19 06:57 PM
Joined: Aug 2017
Posts: 993
D
Dave9 Offline
Offline
D
Joined: Aug 2017
Posts: 993
If you need very accurate spacing you might start a very shallow hole with a smaller bit, then switch over to the desired size, but other than that no you don't need a pilot hole.

Re: Drilling into concrete [Re: buck91] #5036571 03/08/19 07:02 PM
Joined: Sep 2011
Posts: 127
6
65f100 Offline
Offline
6
Joined: Sep 2011
Posts: 127
You need a rotary hammer instead of a hammer drill.

Re: Drilling into concrete [Re: 65f100] #5036620 03/08/19 07:33 PM
Joined: Oct 2008
Posts: 1,479
E
ET16 Offline
Offline
E
Joined: Oct 2008
Posts: 1,479
Originally Posted by 65f100
You need a rotary hammer instead of a hammer drill.


What? My experience is the opposite.

Re: Drilling into concrete [Re: buck91] #5036766 03/08/19 10:00 PM
Joined: Apr 2012
Posts: 2,958
B
buck91 Offline OP
OP Offline
B
Joined: Apr 2012
Posts: 2,958
Well just finished. My 1/2in hammer drill worked great with a masonry bit. No pilot hole, just started slow and it didn't want to wander at all. Nice tight, clean bore that my anchors grabbed nicely.


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Drilling into concrete [Re: buck91] #5036794 03/08/19 10:48 PM
Joined: Jan 2019
Posts: 40
H
HighbrowHillbill Offline
Offline
H
Joined: Jan 2019
Posts: 40
New safe? coffee


05' Ram 5.9 Cummins
11' Infiniti QX56
Re: Drilling into concrete [Re: HighbrowHillbill] #5036820 03/08/19 11:24 PM
Joined: Apr 2012
Posts: 2,958
B
buck91 Offline OP
OP Offline
B
Joined: Apr 2012
Posts: 2,958
Nothing that exciting, just installed a floor anchor to lock my snowblower and genny down.


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™