LumberJocks

Dovetail marking jig

  • Advertise with us
Project by russv posted 1766 days ago 3691 views 8 times favorited 6 comments Add to Favorites Watch

I decided to try my hand at handcut dovetails. This marking jig has a 1:7 ration. I made it out of 1/4” hardboard that is smooth on both sids. I cut 2 pieces into 2.5” squares. I then cut my angles on one piece and cut a dadao in the other. Then I glued together making sure they were at 90 degrees. If you look at the youtube of Rob Cosman’s version ($24.95 on his web sight) you can see how to use it. Laying out for the cuts is sooooo easy with this jig.

-- yknotwood.com: where to go because you don't want no stinking plastic!





6 comments so far

View a1Jim's profile (online now)

a1Jim

112008 posts in 2202 days


#1 posted 1766 days ago

good idea well done.

-- http://artisticwoodstudio.com Custom furniture

View dustyal's profile

dustyal

1196 posts in 2100 days


#2 posted 1766 days ago

I have a similar hand made jig for marking dovetails… made by LJ Ed… He made up a bunch for our hand cut dovetail workshop in 6, 7, 8 ratios. You’re right, they make quick accurate work of it.

Nice work on yours… good job… simple yet very useful.

-- Al H. - small shop, small projects...

View James's profile

James

3 posts in 1704 days


#3 posted 1701 days ago

Ok guys. What does the 6,7,8 ratios mean ?

View russv's profile

russv

262 posts in 1794 days


#4 posted 1698 days ago

that is the angle of the dovetail. 1:6 ratio means over 1” and up 6 ” to determine your angle. to calculate an angle, from the corner of the board measure up 6”, and make a mark on the edge. from the same corner, measure over 1” and make another mark. draw a line between these two marks and you have an angle. most dovetails use a angle based on a 6,7, or 8 to 1 ratio. softwoods should be a 1:6 and hard woods can be 1:8 ratio.

russv

-- yknotwood.com: where to go because you don't want no stinking plastic!

View James's profile

James

3 posts in 1704 days


#5 posted 1683 days ago

Ok. Thanks. Now I know.

View skone's profile

skone

144 posts in 1431 days


#6 posted 1419 days ago

the explanation for calculating the ratios is much appreciated. thank you! i’m just starting on my hand cut dovetail journey and am about to make a couple jigs.

-- "Take extra care not to lose what you feel" (Winwood/Capaldi/Wood)

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