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David's [aka Patron] double curve..my version of the jig? #3: Just kidding!

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Blog entry by degoose posted 1856 days ago 2165 reads 13 times favorited 8 comments Add to Favorites Watch
« Part 2: OK the JIG! Part 3 of David's [aka Patron] double curve..my version of the jig? series Part 4: First attempt at the double curve LL »


Basic 1/4 ” plywood.. mark a line at a diagonal across the board.
NB. the sharper the angle the longer the piece that can be cut.
Inset two bearings on this line 19” on centre to enable the use of the 9.5” Radius template from the first jig with single curve. Fit a bolt in the righthand bearing and fit to the bearing in the base unit.. turn on bandsaw and cut the curve till you reach the line and then change pivot points to the left hand side of both the jig and the base unit and continue cutting .,. not all the way. I added a border of PH of course to reinforce the edges and to make it pretty lol
The rear of the jig has two Incra Buildit bolts and knobs to hold a strengthening strip to hold the two cut pieces together.
I then worked out where a blank 5’’ by 10’’ would be to the right of the cut and covering the cut.
The two clamp holders were then predrilled for the bolts for the the clamps, bolts fitted and the holders fixed to the jig with screws.

Bridge clamps were then fabricated similar to the other spiral jig. As you can see in the photos there are two positions for the movable fence. The clamps on the left need to be able to reach the movable fence in both positions. The clamps on the right need to hold the blank close to the cut line.

I used the template from the spiral jig to make the position line for the movable fence. I then made the first cut on the blank and then moved the cut to the line made with the template and then used this double curve to mark the rest of the the line for the fence.[ Using the first pivot point until the line is reached and then reposition to the righthand pivot point to continue cutting].

The second line is for the making of ‘worms’ .. just move the new double curved template [ movable fence] across 1 5/8”
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I hope this is as clear as I have tried to make it.. If not please feel free to PM me and I will endeavour to make anything unclear more like mud. LOL
This is actually harder to blog than build.

-- Drink twice... and don't bother to cut... @ lazylarrywoodworks.com.au For lovers of all things timber...



8 comments so far

View patron's profile (online now)

patron

12947 posts in 1928 days


#1 posted 1856 days ago

i like the “worms” innovation !
just to throuw in a new ” curve ” ,
either of the radius can be different sizes ,
and it still works !
your addition of the strips really give it some sparkle !

you go boy !

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

View Karson's profile

Karson

34848 posts in 2987 days


#2 posted 1856 days ago

Larry: I’m confused, but that’s not easy. I’ll just need to see you put it into use.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware karson_morrison@bigfoot.com †

View stefang's profile

stefang

12424 posts in 1921 days


#3 posted 1856 days ago

I’ll get it after awhile Larry. Love the result. I will unashamedly copy it as soon as possible. Meanwhile it will be in my favorites with the others.

-- Mike, an American living in Norway.

View Beginningwoodworker's profile

Beginningwoodworker

13337 posts in 2260 days


#4 posted 1856 days ago

Neat jig Larry.

-- CJIII Future cabinetmaker

View TopamaxSurvivor's profile

TopamaxSurvivor

14553 posts in 2263 days


#5 posted 1855 days ago

Neat jig alright, but too deep for me:-))

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View Sivers's profile

Sivers

44 posts in 1969 days


#6 posted 1797 days ago

Wow! This is really slick. I love it.

View a1Jim's profile

a1Jim

111999 posts in 2164 days


#7 posted 1797 days ago

These jigs amaze me, great job.

-- http://artisticwoodstudio.com Custom furniture

View Waldschrat's profile

Waldschrat

505 posts in 2022 days


#8 posted 1797 days ago

I agree, Looks like its quick to use and works well.

-- Nicholas, Cabinet/Furniture Maker, Blue Hill, Maine

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