plywood ball

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Project by aviad mishaeli posted 10-23-2011 10:50 PM 10390 views 22 times favorited 20 comments Add to Favorites Watch

plywood ball

20 comments so far

View Jim Jakosh's profile

Jim Jakosh

25460 posts in 4017 days

#1 posted 10-23-2011 10:54 PM

Outta sight!!!!!!!!

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View rtree's profile


41 posts in 3878 days

#2 posted 10-23-2011 11:04 PM

WOW, that is really neat. How big is it.

-- RT --- The older I get, the smarter my father gets. I should have paid more attention when I was younger.

View live4ever's profile


983 posts in 3922 days

#3 posted 10-23-2011 11:15 PM

That is sweet!

-- Optimists are usually disappointed. Pessimists are either right or pleasantly surprised. I tend to be a disappointed pessimist.

View exelectrician's profile


2339 posts in 3339 days

#4 posted 10-24-2011 12:08 AM

To complete the ball the precision is incredible, how on earth did you do that?

-- Love thy neighbour as thyself

View soccer2010's profile


133 posts in 3341 days

#5 posted 10-24-2011 12:26 AM

Very cool !!! I assume each panel has 5 (or 6) separate pieces.

-- John

View Andy123's profile


226 posts in 3385 days

#6 posted 10-24-2011 12:31 AM

I would love to see a blog on how to make this!

-- The mistakes I make in woodworking are not mistakes they just give my projects character- Me

View lanwater's profile


3113 posts in 3846 days

#7 posted 10-24-2011 07:19 AM

Great work! lot’s of precision.

look for truncated icosahedron.

-- Abbas, Castro Valley, CA

View CarvinTom's profile


22 posts in 3391 days

#8 posted 10-24-2011 06:45 PM

Wow! I’d love to see how you “jigged” up the individual pieces for assembly.

-- Carvin' Tom, Pittsburgh, PA, No, I'm *not* retired. I am a "recycled teenager!"

View jerrells's profile


918 posts in 3796 days

#9 posted 10-24-2011 11:11 PM

I love what I see but do not know how. Any explainations would be great.

-- Just learning the craft my Lord and Savior Jesus Christ practiced.

View rance's profile


4274 posts in 4072 days

#10 posted 10-25-2011 01:38 AM

I’ve always been fascinated with these. Nice job on the ball. From my calculations:
Hex to Hex joints are cut to 20.9 degrees
Hex to Pentagon are 18.7 degrees
Could anyone confirm?

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

View sharad's profile


1119 posts in 4716 days

#11 posted 10-25-2011 08:36 AM

That’s a great creation!


-- “If someone feels that they had never made a mistake in their life, then it means they have never tried a new thing in their life”.-Albert Einstein

View Rockbuster's profile


499 posts in 3520 days

#12 posted 10-25-2011 05:27 PM

Great work, your angles look flawless, this is something that I have always wanted to do ever since I saw Malcolm Tibbetts Building an Icosahedron in his book “The Art of Segmented Wood Turning” According to Malcolm, to make a Icosahedron, you need to cut 20- 30degree triangles cut with a blade angle of 20.905 degrees, he goes on to say that assembly of 20 triangles with 30 matching sides and 12 perfectly matched intersections of 5 points is well beyond most peoples ability. He’s right, I am going to have to tune my tablesaw up a lot more, just to think about trying this project. Would you mind if I ask what kind of table saw you are uning? Or are you using a table saw, Miter saw combination?

-- Rockbuster,Ft. Wayne,In It is far better to remain silent, and appear the fool, than it is to open ones mouth, and remove all doubt.

View soccer2010's profile


133 posts in 3341 days

#13 posted 10-25-2011 06:49 PM

I agree with the 20.905. From memory, I think the pentagon ishould be lower than 18.7, somewhere between 16-17 degress.

I have a german article where the maker quoted 22.5 for the hexagon and 16.0 for the pentagon. Not sure how he got this to work.

-- John

View Joe Lyddon's profile

Joe Lyddon

10951 posts in 4964 days

#14 posted 10-26-2011 05:59 AM

Looks like a nice use for scrap plywood… LOL

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:

View Sam Shakouri's profile

Sam Shakouri

1200 posts in 3999 days

#15 posted 11-06-2011 11:27 AM

Rance, yes I can confirm your angles, BUT I found petagons always needed adjustment to fit them. no matter how precise you cut them. I think all depends on other factors like the movement of the hexes when you leave them to dry and the change that acured by the thickness of the glue itself. If a tiny mistake here and a tiny mistake there, the result of gluing 32 pieces will be noticeable in the end. It is not easy project.
Sorry Aviad for using your page to communicate with Rance. Thanks.

-- Sam Shakouri / CREATING WONDERS WITH WOOD.....Sydney,Australia....

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