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Soccer Ball (truncated icosahedron)

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Project by lanwater posted 950 days ago 7347 views 81 times favorited 62 comments Add to Favorites Watch
Soccer Ball (truncated icosahedron)
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A project from Aviad87 inspired me http://lumberjocks.com/projects/55001. He also posted a detailed picture blog that made it some much easier to make one. Thanks Aviad87.
Also thanks to Rance for verifying the angles: http://lumberjocks.com/rance/blog/26130

I used 1/2 inch thick plywood from HomeDepot; really cheap stuff.
I also used 2”1/8 for the sides of the hexagons (20 of them) and pentagons (12 of them).
The real soccer ball is around 1” 7/8

I Set the balde to 36 degrees and rip the ply for the pentagones and then to 30 degrees and rip the hexagones

I then proceeded to glue them up. The ply was a little warpped.

I ended up with 2 sausages

I ripped those 2 sausages into 1/2 thick pieces.
Since I do not have an 80 tooth plywood balde and the ply was of a lower quality I ended up with hairy pieces. Slower feed did not help.




I then made 2 templates out of 1/4 thick MDF from an old furniture back: 1 hexagone and 1 pentagone.

I also Made a small jig to help in cutting the dihedral angle (sideways angles).
Please note that my template are not very accurate. But I aligned the good side that had correct angles on the jig for the cuting of those angles:
20.9 degrees for the hexagone sides and 18.7 for the pentagones. Aviad87 has slightly different angles on his blog and I follow what Rance pulled out and which I saw as well here: http://www.coolmath.com/reference/polyhedra-truncated-icosahedron.html




Once all the pieces were cut, it was time to glue up.


I softened all the sides with an orbital sander and sanded all the glue squize out using adhesive back sand paper on a flat stick.
I finish with 1 coat of zinser sanding sealer (2 pound cut shellac).
I am not finishing any further at this time. Maybe one day I will go back (if I keep it), sand further and appliy some poly.

I find out that binder clips work best for the clamping. Unfortunately I did not have many of them.

It was a fun project overall.

As always comments good or bad are welcome. Thanks for looking!

-- Abbas, Castro Valley, CA





62 comments so far

View MShort's profile

MShort

1722 posts in 2014 days


#1 posted 950 days ago

That is coool !!!! Thanks for all of the photos for the process.

-- Mike, Missouri --- “A positive life can not happen with a negative mind.” ---

View degoose's profile

degoose

6967 posts in 1950 days


#2 posted 950 days ago

I will stick to cutting boards… thanks…

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

View BritBoxmaker's profile

BritBoxmaker

4335 posts in 1632 days


#3 posted 950 days ago

Clever, attractive, a tribute to your accuracy and patience but I’m with Larry on this one. Except with me its boxes. Good post.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

View aviad mishaeli's profile

aviad mishaeli

92 posts in 1004 days


#4 posted 950 days ago

hy lanwater , grate job !!! glad to inspire

View lanwater's profile

lanwater

3072 posts in 1529 days


#5 posted 950 days ago

MShort: Thanks. Aviad87 has a more extensive blog on that.

Larry: I am with you on that. That ply was so bad that my hands are still itching. Some reaction to whatever they used to make those ply. I have never had any reaction to wood before.

Martyn: Thanks for the comment. From you it means a lot to me. Every time I see one of your boxes I am in awe.

Aviad: Thanks man! your work is fasinating and complex.

-- Abbas, Castro Valley, CA

View JoeyG's profile

JoeyG

1233 posts in 1221 days


#6 posted 950 days ago

I was thinking trying one of these every since I saw Aviad87 blog on how to do them. Now with a second look through your eyes, I was thinking of how cool they would look if someone laminated their on woods. Like purpleheart and maple or padauk and wenge. I am not a sports fan but I know some team out there uses colors we could get from natural woods. Or even something dyed before laminating.

Just a thought. I may return to this after Christmas is done and I get a chance to play in the shop again. Maybe a good project for my kids to help with.

Thanks,
Joey

-- JoeyG ~~~ http://www.facebook.com/JHGWoodWorks

View fernandoindia's profile

fernandoindia

1072 posts in 1539 days


#7 posted 950 days ago

Hi Ian. Great cuts and accurate.

Good challenge, and well done.

-- Back home. Fernando

View SPalm's profile

SPalm

4739 posts in 2477 days


#8 posted 950 days ago

Wow. That is so cool. You did it!
I just love it.

Someday….
Steve

-- -- I'm no rocket surgeon

View lanwater's profile

lanwater

3072 posts in 1529 days


#9 posted 950 days ago

Joey: I had the very same thought but I do not have much wood at this time. I also thought it would be a bit more work to laminate the wood. I am very sure it would look way cool.

Fernando: Thanks!

Steve: The hardest part is the sanding. I should have sanded when the 2 glue up parts where still free. It would have been easier. Thanks!

-- Abbas, Castro Valley, CA

View shipwright's profile

shipwright

4829 posts in 1393 days


#10 posted 950 days ago

Nice one Ian. I’ve done one project with the simpler dodecahedron so I’m aware of the accuracy required and I’m impressed but not surprised that you’ve aced this one.
It’s good to exercise the old brain now and then.

Well done.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/

View BigTiny's profile

BigTiny

1664 posts in 1484 days


#11 posted 950 days ago

I think I need to go to my optometrist. That thing is making me dizzy just thinking about the work involved.

Great job! Congratulations.

Paul

-- The nicer the nice, the higher the price!

View mafe's profile

mafe

9430 posts in 1684 days


#12 posted 950 days ago

Really nice Ian, I love it.
It is a pleasure to see the details of how you made it, som brain gym and patience seemed to pull it off.
This one will get a line on my to try list.
Aviad cool second picture.
Best thoughts,
Mads

-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View ZeroThreeQuarter's profile

ZeroThreeQuarter

120 posts in 1653 days


#13 posted 950 days ago

really cool! and quite generous to share the setup on this! nice work!

-- Your mind, much like a parachute, works best when open.

View lanwater's profile

lanwater

3072 posts in 1529 days


#14 posted 950 days ago

Paul M: Thanks! Definitely a good exercise.

Paul (bigTiny): Thanks!

Mafe: Thank you. Not that involved actualy. Aviad had all the thinking cut out for me. That second picture from Aviad is indeed cool. I was thinking magnets and then I spotter that spider string..

ZerothreeQuater: Thank you!

-- Abbas, Castro Valley, CA

View SawTooth1953's profile

SawTooth1953

276 posts in 1901 days


#15 posted 950 days ago

I like it…

-- Spence in Skokie, IL

showing 1 through 15 of 62 comments

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