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Spirals #1: How to make the "Spiral Lazy Larry"

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Blog entry by degoose posted 1866 days ago 3712 reads 58 times favorited 23 comments Add to Favorites Watch
no previous part Part 1 of Spirals series Part 2: THE Jig and how you too can make one. »

You will need 12 pieces of timber roughly 5’’ by 12’’ whatever thickness you want. [ I milled mine to 5/8”]
The first one I made was PH and SA—6 of each.
Place timber in the jig and cut the first arc.
Move the piece into the fence, clamp and make the second arc cut.


Repeat 12 times.

Glue it up and cut it into a circle.
Put on a little tung oil finish

Thats about It.

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



23 comments so far

View goppetto's profile

goppetto

23 posts in 1900 days


#1 posted 1866 days ago

do you use clamps or something else i cant figure out how you keep the joints tight
i curious.

View degoose's profile

degoose

6958 posts in 1939 days


#2 posted 1866 days ago

If you come up with a good idea let me know, I am still working out how to do that..I wrapped a piece of ply with cling film.. GladWrap here and I just put glue on the joints and spread some cling film on top and stacked some weights.. large bits of timber .. on top and waited till the glue dried..I worked..so go figure..
I am toying with the idea of using small wooden cleats screwed on to a ply board.. up against the ends.
This does not need much clamping pressure.
Thanks for the question ..
Larry

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

View scopemonkey's profile

scopemonkey

182 posts in 2748 days


#3 posted 1866 days ago

Wow…very nice. To get tight joints like that right off your bandsaw is amazing, especially since it sounds like you couldn’t really apply clamping pressure to pull it together. No matter how much I fuss with adjusting mine, the cut would never be good enough to make a tight fit. Also, since each piece represents a 30 degree wedge, I would be interested to know how you set up the jig to do this so accurately.

When this goes spinning about, it will be really cool to just watch. Thanks for posting, and I enjoy your blogs.

-- GSY from N. Idaho

View degoose's profile

degoose

6958 posts in 1939 days


#4 posted 1866 days ago

Thanks man, I am in middle of the second installment right now .,.uploading a heap of pics to Photobucket to include in the blog,..,and THAT is a 30degree curved wedge…
stay tuned

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

View Douglas Krueger's profile

Douglas Krueger

396 posts in 2308 days


#5 posted 1866 days ago

degoose,

This clamping method would require you to cut the circle shape twice but If you were to cut the pieces to a rough cut circle before gluing the following idea just might fly.

Am guessing that if you take 4 scrape pieces and make only the first arc cut (leave the other side straight) then lay them out at 90 degrees around the circle, it should give you some discent straight edged clamping surfaces. Before clamping the outer circle I might suggest clamping the piece flat at the center to prevent everything from popping up as you apply pressure from the outside. Once the glue dries, it’s time to re-cut the circle to the finished diameter.

See, now you have justification to relax in your ‘thinking chair’ next to your buddy in turquoise and engineer a simple jig to accomplish the pre-glue circle cutting task.

and love your projects, great inspiration from all of your persperation.

Now back to another ice cold ‘brains in a can’...............................

-- I can so I wood but why are my learning curves always circles

View TopamaxSurvivor's profile

TopamaxSurvivor

14550 posts in 2260 days


#6 posted 1866 days ago

Thanks for the idea. If it’s working now with very little but weight on top, seems that only a little pressure from outside would insure it stayed together. If you start boards all the same length, a firm wrap should be equal pressure.

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

View degoose's profile

degoose

6958 posts in 1939 days


#7 posted 1866 days ago

Need another bottle of brains mate.. can’t quite see your solution,, but never mind thanks for the input.,
As with the cleats I didn’t mention the wedges against the cleats… that just came to me.
Cheers

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

View TopamaxSurvivor's profile

TopamaxSurvivor

14550 posts in 2260 days


#8 posted 1866 days ago

You mean yoiu’re already putting a little pressure from the outside with cleats and wedges, not just weight on top?

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

View degoose's profile

degoose

6958 posts in 1939 days


#9 posted 1866 days ago

No Bob but I will .. with the next couple of hundred that I envisage I will have to make once I show them around.

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

View TopamaxSurvivor's profile

TopamaxSurvivor

14550 posts in 2260 days


#10 posted 1866 days ago

Sounds better than trying to get a belt around it ;-)) How did you get that jig that accurate? That is even more amazing than the end product!!

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

View jlsmith5963's profile

jlsmith5963

297 posts in 1933 days


#11 posted 1866 days ago

ok so while everyone is concerned about how to clamp the thing, am I the only one still trying to figure out have you get tight enough joints off the band saw? lol

-- criticism: the art of analyzing and evaluating the quality of an artistic work...

View degoose's profile

degoose

6958 posts in 1939 days


#12 posted 1866 days ago

Nothing to figure out just mathematics and geometry and things that we said we would never need once we left school Hey
Stay tuned.

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

View stefang's profile

stefang

12405 posts in 1919 days


#13 posted 1866 days ago

Wow, I think this is all beyond me. Especially the mathe geometry part. Why oh why didn’t I pay attention in school! I do have a clamping suggestion though, but you might have to modify it a bit to suit. Firstly I want to tell you that I love that spiral and want to make one, but have grave doubts about my chances for success.

Anyway, here’s how you make the clamps:

1. cut a stick about 1/2” square and a mile long.

2.Then cut another stick about 3/4” wide and 1/8” thick the same length as the other piece. Hot Glue the last piece onto the top of the first piece lengthwise.

3. Cut the long ‘T’ shaped profile into cleats with lengths of about 2” or whatever length you want.

4. Hot glue the cleats along and parallel to your glue seams in pairs each opposing one another on each side of each seam. You can probably do this on one side only of the lazy Larry and then weigh it down clamp it after gluing to keep it all flat.

5. Wrap rubber bands around the glued on cleats (you need a cheap bag of these). You don’t need extra strong rubber bands, the office kind will do. You will see that the ‘T’ shape on the cleat is designed to keep the rubber bands in place so they can’t slip upwards under pressure. Presto,your in business! You will be amazed at how much pressure is applied.

I’ve used this method for some very complicated compound angle bowl stave glue-ups and it really worked well. I hope my description is clear and helpful and not ‘over the top’.

-- Mike, an American living in Norway.

View degoose's profile

degoose

6958 posts in 1939 days


#14 posted 1866 days ago

A pic would make it easier to see,. lol
Actually I see I see I see. It just came to me what you meant.
I know where you are coming from.
Thanks for the input.

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

View patron's profile

patron

12947 posts in 1926 days


#15 posted 1866 days ago

how about a bicycle tire inertube and some air ?

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

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