Using a router to make the "Lazy Larry" #1: Making the "Lazy Larry" using a router and router jig.

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Blog entry by Ampeater posted 06-19-2009 02:14 AM 14139 reads 44 times favorited 9 comments Add to Favorites Watch
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Degoose showed us how to make the jig that uses a bandsaw to make the spiral sections of his “Lazy Larry”.

Well I made the jig, but my old small bandsaw just wasn’t up to the task. I wasn’t about to quit, so I decided to try to make a jig that I could use with my router. It took me awhile to figure it out (using Sketchup), but once I did, it was rather easy to make the jig.

Here is how to make the jig.

Picture 1.

1. Cut a 3/4” thick piece of MDF or Plywood, 10” X 15”.
2. Draw a line down the middle of the board as shown in the drawing.
3. Draw a short line 1” from the edge of the board. This line must cross the first line.
4. Draw another short line 10-1/2” from the edge of the board.

Picture 2.

Using drafting triangles, draw the lines as shown on the picture. Make the 30 and 45 degree angles as accurately as possible.

Picture 3.

Drill the two 3/8” diameter holes as shown in the picture. These two holes will be used later as the center of the points for making the radius cuts with the router.

Picture 4.

This picture shows how the two 3/8” holes will be used. The router trammel shown in Picture 7 will be used with this board to make the two radius cuts. A 1/2” router bit is used.

Picture 5.

1. Cut another piece of wood 9-1/8” X 10”. This board should be the same thickness as the wood used to make the “Lazy Larry”. This board is used as a fence to help align the boards used for the “Lazy Larry”. It is also a spacer to raise the router to the same level as the boards.
2. Attach this board as shown in the picture using double sided tape.
3. Flip the boards over and drill the 3/8” holes through this board using the original holes as a guide. These two holes will be used as pivot points using a 3/8” dowel.

Picture 6.

The jig should now look like this.

Picture 7.

This picture shows the router trammel. The 5/8” diameter hole is for a router bushing. The internal diameter of the bushing must be large enough to accomodate a 1/2” diameter router bit.

I hope that this information is useful for the JOCKS who would rather use a router than a bandsaw.

Next time I will show how the jig is used.

-- "A goal without a plan is a wish."

9 comments so far

View degoose's profile


7281 posts in 4359 days

#1 posted 06-19-2009 02:35 AM

Now that is ingenious. Bravo my friend.
See what happens when you look outside the box. Every woodworker has a different approach to the same problem and makes the jig accordingly. I was going to use a jig on my over head router table to make these segments but the band saw is my tool of choice for this one.
I look forward to seeing the jig in motion so to speak.
Keep up the good work. It looks like you are having lots of fun with this newer idea.

-- Don't drink and use power tools @

View dustbunny's profile


1149 posts in 4299 days

#2 posted 06-19-2009 03:06 AM

Nice job!! I don’t have a band saw, but I do have a router….....
Thanks for the sketch up.
Both of you need to get back in your boxes, I’m having trouble keeping up. LOL
You guys are awesome !! :)


-- Imagination rules the world. ~ Napoleon Bonaparte ~

View blackcherry's profile


3345 posts in 4827 days

#3 posted 06-19-2009 04:03 AM

Wow this will have to go into the favorite bin. Look what you started Larry from down-under. I like the router method idea Ampeater. Looking forward to seeing it in action….Blkcherry

View stefang's profile


17040 posts in 4338 days

#4 posted 06-19-2009 10:54 PM

I am impressed with the ingenuity of this jig, but wouldn’t it be simper to just cut the pieces slightly over sized on a bandsaw from a template and then route them with a pattern bit against a template to the exact size? I realize this is not as efficient as Larry’s direct method, but it seems a little simpler than doing all the cutting with a router. Am I missing something here? I am assuming that one has a bandsaw that can at least do the roughing out cut.

-- Mike, an American living in Norway.

View a1Jim's profile


118161 posts in 4581 days

#5 posted 06-20-2009 01:48 AM

Well I guess my dyslexia(I really do have it) has kicked in for Larrys, Davids and now Ampeaters Jigs. I have to admit I always have fought some problems with angles and a few jigs but I have to confess I just don’t get it .
It bugs me beyond frustration. I usually can figure out some fairly complicated projects but not this one. If any of you have the time to do a video on this I hope I’m not the only one still out there mentally. Seeing them in use I’m sure it will be a ah ha moment.


View Karson's profile


35270 posts in 5405 days

#6 posted 06-20-2009 01:52 AM

Looks great. I’m going to have to work out the details on this.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Appomattox Virginia [email protected]

View Cozmo35's profile


2200 posts in 4040 days

#7 posted 07-06-2010 08:55 PM

Thanks for posting this! This is really a great blog. Even I can use this information.

-- If you don't work, you don't eat!.....Garland, TX

View parkerdude's profile


182 posts in 4456 days

#8 posted 10-10-2012 02:29 PM

I wanted to try this project, and I know I have a drafting square somewhere, I haven’t seen it in years. I knew that you can find angles with a compass…

These pages will get you on the right track.

Lazzy Larry Router Jig Layout

How to figure 30° w/ Ruler & Compass

How to figure 45° w/ Ruler & Compass

The layout took less than 10 minutes. Time to get in the shop and give it a try!


-- dust control

View recipio's profile


18 posts in 2369 days

#9 posted 01-13-2016 07:13 PM

Hi Guys,
Just reviving this old thread. I made the jig and it works a treat. You don’t have to use a 1/2” cutter but you must make the trammel piece with the correct offset – half the diameter of the router bit.
There are a few problems – the piece must be held down at all four corners and in the middle routed segment otherwise they will begin to move when the cut is just completed.I use small pins as I find double stick tape messy to clean up after all 12 cuts. This is ok if veneering the piece but not if using solid wood.
The next problem is glueing all 12 pieces together keeping them flat. I’m going to try a band clamp – after cutting the outside rim into a circle.
Now, can anyone tell me how to make a jig to cut six segments ?! Anyone tried this. ?


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