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."
6 comments so far
degoose
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2001 posts in 250 days
posted 159 days ago
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.
Larry
-- Drink once, cut twice. New website up.... lazylarrywoodworks.com.au
dustbunny
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318 posts in 190 days
posted 159 days ago
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 !! :)
Lisa
-- I inherited the woodworking gene and it's gone into overdrive.......
blackcherry
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730 posts in 718 days
posted 159 days ago
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
stefang
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1650 posts in 229 days
posted 158 days ago
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, American in Norway
a1Jim
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16841 posts in 472 days
posted 158 days ago
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.
-- Jim from Heirloom Woodshop Southern Oregon
Karson
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25801 posts in 1295 days
posted 158 days ago
Looks great. I’m going to have to work out the details on this.
-- What happens in the workshop stays in the workshop. No wait that doesn't sound right. Karson Southern Delaware karson_morrison@bigfoot.com †