light bulb moment

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Blog entry by patron posted 241 days ago 980 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


1129 posts in 1824 days

#1 posted 241 days ago

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


13017 posts in 1972 days

#2 posted 241 days ago

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


13298 posts in 1306 days

#3 posted 241 days ago

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 procratination a bad thing?

View shipwright's profile


4917 posts in 1429 days

#4 posted 240 days ago

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 (online now)


7124 posts in 1596 days

#5 posted 240 days ago

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


7102 posts in 2064 days

#6 posted 240 days ago

great idea…..simple too

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

View lanwater's profile


3076 posts in 1565 days

#7 posted 240 days ago

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

Love the “dead center” Serge.

-- Abbas, Castro Valley, CA

View stefang's profile


12935 posts in 1965 days

#8 posted 240 days ago

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

-- Mike, an American living in Norway.

View Doe's profile


952 posts in 1461 days

#9 posted 240 days ago

Thanks David and merci beaucoup Serge for the great ideas.

-- Mother Nature talks, I try to listen

View littlecope's profile


2898 posts in 2133 days

#10 posted 240 days ago

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


9491 posts in 1720 days

#11 posted 240 days ago

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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