LumberJocks

Ball Drilling Jig

  • Advertise with us
Project by johnhutchinson posted 12-29-2013 01:06 PM 2032 views 19 times favorited 33 comments Add to Favorites Watch

When I was making my radial wave lamp, I needed to come up with a way to drill accurate holes through wooden balls. So I came up with this “clothespin” solution. I mounted a short board with a slot to a longer board and then drilled a hole with my variable-diameter hole saw. The hole saw’s 3/16” pilot bit gave me the center point in the base board. I then used a regular 3/16” twist bit to position the jig on my drill press table. After clamping the jig to the table, and then pinching the ball in the clothespin, I can use any size bit for a perfectly centered hole.

PS—The table on my little 10” drill press may look a little unusual. It’s an oval Corian sink cutout that I mounted to the steel table with double-face foam tape.

-- John - Central Ohio - "too much is never enough"





33 comments so far

View Vince's profile

Vince

959 posts in 2082 days


#1 posted 12-29-2013 01:34 PM

Nice jig, I’ll have to make one of those. Thanks for sharing that.

-- Vince

View SPalm's profile

SPalm

4808 posts in 2535 days


#2 posted 12-29-2013 01:35 PM

Clever one John.

I have used Corian cutouts too for various things. They make a nice stable flat surface. Glue does not stick to it either.

Good idea, thanks,
Steve

-- -- I'm no rocket surgeon

View stefang's profile

stefang

13024 posts in 1987 days


#3 posted 12-29-2013 01:39 PM

Good jig John.

-- Mike, an American living in Norway.

View Monte Pittman's profile

Monte Pittman

14162 posts in 991 days


#4 posted 12-29-2013 01:49 PM

Great idea.

-- Mother Nature created it, I just assemble it.

View johnhutchinson's profile

johnhutchinson

625 posts in 282 days


#5 posted 12-29-2013 02:04 PM

I used a variable-diameter hole saw for the hole in the “clothespin” so I could slightly upsize it from the advertised diameter of the balls. The true sizes are all over the place, and a lot of them are egg-shaped rather than true spheres.

-- John - Central Ohio - "too much is never enough"

View doubleDD's profile

doubleDD

2452 posts in 696 days


#6 posted 12-29-2013 02:13 PM

A well thought out simple jig. Should be handy for many projects. Good idea.

-- --Dave, Downers Grove, Il. When you run out of ideas, start building your dreams

View HillbillyShooter's profile

HillbillyShooter

4577 posts in 945 days


#7 posted 12-29-2013 02:31 PM

Very nice solution and jig—thanks for sharing another keeper.

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

View JoeinGa's profile

JoeinGa

3241 posts in 660 days


#8 posted 12-29-2013 03:19 PM

How do you like that adjustable hole bit? What brand is it?

Nice jig by the way.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

View johnhutchinson's profile

johnhutchinson

625 posts in 282 days


#9 posted 12-29-2013 04:15 PM

The Vermont American adjustable hole saw is probably the safest of its kind out there. I’ve been using mine for a dozen years and it’s easy to sharpen. Here’s a link and a picture.

http://madools.com/show_Product.asp?ID=849045325184011

-- John - Central Ohio - "too much is never enough"

View luv2learn's profile

luv2learn

1701 posts in 956 days


#10 posted 12-29-2013 04:23 PM

Very clever idea John, its in my favorites.

-- Lee - Northern idaho~"If the women don't find you handsome, at least they ought to find you handy"~ Red Green

View Roman Hrytsak's profile

Roman Hrytsak

482 posts in 1339 days


#11 posted 12-29-2013 04:34 PM

I like the jig. I see safety and precision! Keep your posts coming. RH

-- Roman:... there are no mistakes, just opportunities for a design change!

View johnhutchinson's profile

johnhutchinson

625 posts in 282 days


#12 posted 12-29-2013 04:53 PM

I just looked at your wooden shoes, Roman. They’re amazing! I like the idea of taking one thing and doing it over and over until you’ve become the master.

-- John - Central Ohio - "too much is never enough"

View Diggerjacks's profile

Diggerjacks

1755 posts in 1792 days


#13 posted 12-29-2013 07:04 PM

Hello John

An indispensable jig for who want to drill a ball

I will make one like this in the next days

Thanks for sharing

-- Diggerjack-France ---The only limit is the limit of the mind and the mind has no limit

View Maveric777's profile

Maveric777

2690 posts in 1730 days


#14 posted 12-29-2013 07:21 PM

Very Cool!

-- Dan ~ Texarkana, Tx.

View hoss12992's profile

hoss12992

2743 posts in 546 days


#15 posted 12-29-2013 11:02 PM

Great job, I can def use one of these

-- The Old Rednek Workshop https://www.facebook.com/theoldrednekworkshoptn

showing 1 through 15 of 33 comments

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase