How To Drill Straight And Plumb? - Building & Construction - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 02-08-2013, 05:38 PM   #1
Member
 
Join Date: Nov 2011
Posts: 1,312
Rewards Points: 1,484
Default

How to drill straight and plumb?


I need to make a 1/2" circular hole through a piece of 4x4.

The 4x4 is already attached and lays horizontally. The hole needs to be vertical.

I have drills but they don't have level bubbles on them.

Any tricks to make sure the hole is straight and plumb? I did a few on a scrap piece of 4x4 and they came out slanted one way or another.

Advertisement

miamicuse is offline   Reply With Quote
Old 02-08-2013, 06:35 PM   #2
MarginallyQualified
 
Join Date: Dec 2011
Location: Winston-Salem NC
Posts: 3,884
Rewards Points: 2,442
Default


Quote:
Originally Posted by miamicuse View Post
Any tricks to make sure the hole is straight and plumb?
Comfort and familiarity with the weight and balance of the drill is 98% of it.
Actually holding it straight and plumb is the rest.

If you only use the tool for 20 minutes at a time 4 or 5 times a year...
it'll be a lot harder than using all day for weeks (or years) on end.

The "tricks" are about trying to compensate for that...
and they really are just that: tricks.

Advertisement

TarheelTerp is offline   Reply With Quote
Old 02-08-2013, 06:45 PM   #3
Member
 
Join Date: Sep 2012
Posts: 5,146
Rewards Points: 2,052
Default


Using a straight section of 1/2" x 5/8" tubing ( copper etc. ) make yourself a drill guide a couple of inches long. Clamp this piece of tubing in the 5/8" opening of a flaring tool with the bottom end flush on a flat surface. Next, clamp the flaring tool to the 4x4 and the tubing drill guide will be vertical to guide the bit.
SeniorSitizen is offline   Reply With Quote
The Following 2 Users Say Thank You to SeniorSitizen For This Useful Post:
jaydevries (02-09-2013), oh'mike (02-09-2013)
Old 02-08-2013, 07:13 PM   #4
Civil Engineer
 
Join Date: Mar 2009
Location: Boston
Posts: 5,305
Rewards Points: 4,190
Default


You can set a square on top of the wood block, then drill parallel to the square. Or you can buy a portable drill press that holds the drill. Or you can use a carpenters level to set a plumb line to match. Or you can hang a plumb bob next to the hole, and align against that.
Daniel Holzman is online now   Reply With Quote
Old 02-08-2013, 07:22 PM   #5
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 33,218
Rewards Points: 11,562
Default


Mark both sides then drill 1/2 way through from the two sides.
Use a paddle bit not a twist drill.
joecaption is offline   Reply With Quote
The Following 2 Users Say Thank You to joecaption For This Useful Post:
jaydevries (02-09-2013), kwikfishron (02-08-2013)
Old 02-08-2013, 07:53 PM   #6
Member
 
kwikfishron's Avatar
 
Join Date: Mar 2010
Location: Kansas City
Posts: 9,592
Rewards Points: 124
Default


There's always the mirror trick (Goggle it).

Coming through from both sides is your best bet though.

If being precise is that critical to you then I'm sure that a splinter blow out on the back side is something you don't wan't either.

Drilling from both sides will give you a clean finished look.
__________________
A Picture Is Worth A Thousand Words
Especially In The DIY Chatroom
kwikfishron is online now   Reply With Quote
Old 02-08-2013, 07:59 PM   #7
Member
 
Join Date: Sep 2012
Posts: 5,146
Rewards Points: 2,052
Default


The two holes will never be in alignment boring from two sides. If a straight hole is critical better use a different approach.
SeniorSitizen is offline   Reply With Quote
Old 02-08-2013, 08:04 PM   #8
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 33,218
Rewards Points: 11,562
Default


I've only done it a couple hundred times while building decks so I know it works.
Perfectly aligned all the way through, no, but were not building a Swiss watch.
joecaption is offline   Reply With Quote
Old 02-08-2013, 08:09 PM   #9
Roofmaster
 
Join Date: Oct 2012
Location: Maryland
Posts: 3,707
Rewards Points: 2,172
Default


How about one of these?
Attached Images
 
__________________
" Most people would rather die than think, and most do " Bertrand Russell

jagans is offline   Reply With Quote
Old 02-08-2013, 08:34 PM   #10
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 33,218
Rewards Points: 11,562
Default


Been there done that, at that depth and in soft wood the drill still tends to not stay straight all the way through.
Plus you still get blow out on the other side unless there's a scrap piece of wood under it.
joecaption is offline   Reply With Quote
The Following User Says Thank You to joecaption For This Useful Post:
jaydevries (02-09-2013)
Old 02-08-2013, 09:03 PM   #11
Member
 
kwikfishron's Avatar
 
Join Date: Mar 2010
Location: Kansas City
Posts: 9,592
Rewards Points: 124
Default


Here comes another three page epic saga on how to drill a hole.
__________________
A Picture Is Worth A Thousand Words
Especially In The DIY Chatroom
kwikfishron is online now   Reply With Quote
The Following 3 Users Say Thank You to kwikfishron For This Useful Post:
Alan (02-09-2013), bbo (02-09-2013), woodworkbykirk (02-09-2013)
Old 02-09-2013, 08:20 AM   #12
Member
 
Join Date: Oct 2009
Location: Minneapolis, MN
Posts: 580
Rewards Points: 660
Default


OP, why does the hole need to be perfectly vertical? Can you make a 9/16 or even 5/8 hole and to be sure whatever goes through the hole can still be perfectly vertical even is the hole is a bit askew?

B
Beepster is offline   Reply With Quote
Old 02-09-2013, 10:23 AM   #13
Member
 
Join Date: Jul 2012
Location: cleveland ohio
Posts: 445
Rewards Points: 250
Default


What about those hole hog bits? They have that screw on the end and seem to drill themselves.
paintdrying is offline   Reply With Quote
Old 02-09-2013, 10:52 AM   #14
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 33,218
Rewards Points: 11,562
Default


It would work but still going to have to drill from both sides if you want the hole to line up perfect.
It's called a self feeding auger bit.
joecaption is offline   Reply With Quote
Old 02-09-2013, 01:02 PM   #15
Member
 
Join Date: Sep 2012
Posts: 5,146
Rewards Points: 2,052
Default


Quote:
Originally Posted by kwikfishron View Post
Here comes another three page epic saga on how to drill a hole.
I hope it lasts long enough to see a demonstration on -- how to drill a hole from each side and have them meet in the middle perfectly straight every time --

Advertisement

SeniorSitizen is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Enclosing Porch joetab24 Project Showcase 123 03-21-2016 08:25 PM
Door not plumb letting cool air out-need assistance maydaymay Windows and Doors 1 07-16-2012 06:01 AM
Deck post not plumb issue sm424 Building & Construction 64 07-02-2012 09:02 PM
Perfectly straight line Casey Flooring 13 04-05-2011 10:18 PM
SIDING- make leaning garage appear straight wwsteel Building & Construction 8 11-20-2010 07:21 PM




Top of Page | View New Posts

 

Search Engine Friendly URLs by vBSEO 3.6.1