light bulb moment

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Blog entry by patron posted 12-29-2013 08:53 PM 1111 reads 7 times favorited 11 comments Add to Favorites Watch

mads just posted a great project and blog
on a simple marking gauge to mark any board into two equal parts

this got me to thinking about how to do even more this way

so i went into the shop
and came up with the same concept to mark into 3 or 4 equal parts

it is very simple
just divide the space (from the stops on the ends) into what ever you want to
(you can do this as many times as you want)

here is what i came up with
(i used metric for the measurements as 12 can be divided by 3 or 4 easily)

first the center one that works to halve

then the 1/4 (for 4 equal pieces) mark that works from both sides

for 3 equal parts just use the 1/3rd hole
marking from both sides also

the one shown here is just a quickie from some scrap
(not as nice as mads by far)
but i think you get the idea

it can be divided as you like
and should be good for any size thickness board

i will probably make a few in different lengths
for edges to split boards into book-matches
or longer to rip boards into equal widths
all without the tedious measuring of odd boards
(especially using inches)
this should be close enough to run them on edge thru the planer
to get them all the same width

thank you mads
for all you share with us

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

11 comments so far

View Bricofleur's profile


1234 posts in 2038 days

#1 posted 12-29-2013 09:06 PM

One brings an idea and another one raise it up! Thanks, David.

Now here’s how I make sure the center is dead centered:



-- Learn from yesterday, work today and enjoy success tomorrow. --

View patron's profile


13320 posts in 2186 days

#2 posted 12-29-2013 09:19 PM

right you are serge (as usual)

i thought about that too for the centering

but got excited to try the idea out
so just marked and drilled by hand

for the real ones i will do as you show

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View DIYaholic's profile


16001 posts in 1520 days

#3 posted 12-29-2013 09:31 PM

I had a “light bulb moment” last night….
I opened the door to the refrigerator, to grab a cold one….
& the light bulb came on!!! ;^)

Great addendum to Mad’s blog/project!
I can actually see myself utilizing this….

Thanks for the well detailed description!

A thank you to you too!
Thanks for the insightful drilling technique!!!

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View shipwright's profile


5635 posts in 1643 days

#4 posted 12-30-2013 12:41 AM

David, if you divide the interval into three sections with the spaces in the ratio of ~ 1 : 1.4 :1, pencils in the two holes will give you the layout lines to make a tapered octagon from a tapered square. Just scribe these lines on all four sides and plane off the corners. That’s how you make a tapered mast.

Have a great new year my friend.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees.

View JL7's profile


7718 posts in 1810 days

#5 posted 12-30-2013 01:00 AM

Good thinking there David…....I think I should have enough scraps around to build a couple…....thanks…

-- Jeff - I have not failed. I've just found 10,002 ways that won't work.

View Gary's profile (online now)


7825 posts in 2277 days

#6 posted 12-30-2013 04:30 AM

great idea…..simple too

-- Gary, DeKalb Texas only 4 miles from the mill

View lanwater's profile (online now)


3101 posts in 1779 days

#7 posted 12-30-2013 05:49 AM

That’s a great idea David.
It will be very useful.

Love the “dead center” Serge.

-- Abbas, Castro Valley, CA

View stefang's profile


14003 posts in 2179 days

#8 posted 12-30-2013 08:11 AM

Sure beats measuring, especially for me. Good one David, and you to Paul.

-- Mike, an American living in Norway.

View Doe's profile


1144 posts in 1675 days

#9 posted 12-30-2013 09:53 AM

Thanks David and merci beaucoup Serge for the great ideas.

-- Mother Nature talks, I try to listen

View littlecope's profile


2984 posts in 2347 days

#10 posted 12-30-2013 11:07 AM

A Mafe Tool
Expanded upon and simplified by Patron
Accurized by Bricofleur
and embellished further by Shipwright!
What a Team!!
Definitely a must-make Gentlemen,
many thanks to all of you!

-- Mike in Concord, NH---Unpleasant tasks are simply worthy challenges to improve skills.

View mafe's profile


10026 posts in 1934 days

#11 posted 12-30-2013 12:39 PM

Big smile here.
Mike you said it all! LOL.
Really cool David – now I have to make it in brass also… Naaaaaaaa.
Lovely that I out light in your shop.
This is what are so beautiful about LJ, that ideas spread and create new, like a wonderful warm virus, that makes us more healthy.
Happy new year,

-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

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