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Old 5th Jun 2007, 00:30   #1
Pfaffen
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Project Fibonacci Sequence

Well this is my second mod. And the first I'm doing as a Project Log.

I decided to make the case in dimensions based on the Fibonacci sequence
1, 1, 2, 3, 5, 8, 13, 21, 34, 55.





The design is to make the case in the proportions of the Fibonacci sequence. But if I used 1inch then the case would be 13x21x34 in any combination, that is one big case. So I decided to use .75in per unit and that way it was much more manageable dimensions and I deciced to make it square on top.

So, I started last night with this piece of walnut.


It was 6 x 36 and 13/16ths. After I cut the rails and stiles and ran them through the planer they were exactly 3/4in square.





Here are the shavings from planing them.


Next I cut the rails and stiles to length.
4 stiles and 9 rails, just in case I need an extra.


Next came laying out the pieces so far and labeling them.
I liked the blue painters tape, because it came off cleanly and was easier than trying to read pencil marks on the wood.


Next was cutting the tenons. I used a tenoning jig for the most part and then used the fine tooth saw to finish the job off.




The next was to cut the slots on the rails for the mohagany inserts. The are spaced out in the same sequence 1,1,2,3,5,8 (3/4in per unit)


Here is a top view shot


and lastly, here are the stiles cut with all the rabbits to recieve the plexiglass.


Next step is to mortice the holes in the rails to recieve the stiles. I'm not sure I like the half lap joints, I wanted something simple, in keeping with the design, but not sure what other strong joints are out there that are strong enough with 3/4in stock.

More to follow...

Last edited by Pfaffen; 15th Jun 2007 at 00:28.
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Old 5th Jun 2007, 01:21   #2
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Looking good so far. Why kind of woodworking background do you have seeing as how you have all these nice tools?
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Old 5th Jun 2007, 02:01   #3
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Started out Small

I started about 10 years ago, just making small things, boxes, shelves, nothing really to speak about. Then as I collected more (what I could afford) tools, I began to build other things. Now, I'm building cases. Would still like to get a band saw and a stationary router table to complete my work room. I liked the blend of wood working and computers.
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Old 5th Jun 2007, 13:21   #4
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such case ideas happen when somebody reads to much Dan Brown
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Old 5th Jun 2007, 13:58   #5
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haha Dan Brown is just great. nonetheless, it is an original case.

but is there a way to exemplify that this case is built based on the fibonacci sequence? like have numbers engraved all over the case to display that. because without some fibonacci indicator, i would think this case is something BUT based on fibonacci.

my point is, somehow suggest to the audience the significance of your case. would be very interesting.
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Old 5th Jun 2007, 15:39   #6
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I would just put the name Fibonacci on there somewhere small and let people figure it out. Some will get it, some won't. But the seemingly randomness of the cuts will make it look interesting even if they don't.
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Old 5th Jun 2007, 15:43   #7
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hmmm yea that could probably do.
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Old 5th Jun 2007, 15:47   #8
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looks like this will be an interesting project and will keep an eye on it.

keep up the good work
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Old 5th Jun 2007, 19:43   #9
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looking good! very original idea
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Old 5th Jun 2007, 22:23   #10
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Too much time

I agree. Way too much time on my hands, but I also read the Golden Ratio by Mario Livio. The concept was quite interesting and led to some lively discussions with my friends.

This the concept drawing for the left side.


I'm still toying with the idea of putting the formula, or the number sequence on the other side.

fn = fn-1 + fn-2 with f1 = f2 = 1

More to follow.
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Old 5th Jun 2007, 22:35   #11
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Bottom dry fit

Here is a shot of the bottom dry fitted together.



Here is a shot of the corner. Need to tighten it up a bit.




Here is a shot of the corner with the stile removed. A little bit over shot with the drill press, but that mistake is covered up by the stile.



Here is the little jig I created to hold the pieces together while I drilled the holes.

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Old 5th Jun 2007, 22:37   #12
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nice keep them coming!
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Old 6th Jun 2007, 11:21   #13
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hmm an original theme for a mod. I like it so far!
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Old 6th Jun 2007, 16:46   #14
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Great woodwork!

The design looks really nice!
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Old 6th Jun 2007, 17:52   #15
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Quote:
Originally Posted by Pfaffen
I'm still toying with the idea of putting the formula, or the number sequence on the other side.

fn = fn-1 + fn-2 with f1 = f2 = 1
Well, there again, to follow my original idea, how about putting the formula on a sticket or badge, unobtrusive, like the "Intel Inside" or other stickers. The numbers could number the PCI slots in the rear.
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Old 7th Jun 2007, 01:56   #16
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Good idea. I could put it in the bottom corner. Thanks...
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Old 9th Jun 2007, 02:09   #17
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Dry Fit

Here is a shot of the bottom and the 4 stiles


All the mortices and tenons need some touch up.
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Old 9th Jun 2007, 06:07   #18
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wow that is a great idea, BTW nice woodworking skills
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Old 9th Jun 2007, 14:03   #19
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mmmmm fibonacci nature's beauty in many ways.... keep up!! its gonna "rock"
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Old 9th Jun 2007, 14:07   #20
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Assembled

Here are a couple of shots assembled.








Here is the jig I made to do the routing of the rails. all the top rails and the bottom rails are going to have a curve to them. Should be about a 1/4 of an inch across the length.




Here is a shot of the corner. It seems there was a small adjustment to the table saw between the time I cut the stiles and the rails. That just means, you always have to double check your work.



Here is a shot from the top.



Lastly, a couple of shots for the width and height





Next step it to get the plexiglass, cut it and put it in.

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