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 1 
 on: Today at 11:00:45 PM 
Started by Iacopo - Last post by Joah
That is an absolutely beautiful top!

 2 
 on: Today at 07:48:49 PM 
Started by ta0 - Last post by the Earl of Whirl
I wish I could have been there to watch their reactions!

 3 
 on: Today at 07:46:43 PM 
Started by Iacopo - Last post by the Earl of Whirl
I want to touch it!!!  I want to hold it!!!  I can’t stand not having my hands on it!!!

 4 
 on: Today at 04:08:43 PM 
Started by Iacopo - Last post by ortwin
...
This 120 grams top, with 41.4 mm of diameter, can spin for up to 30 minutes with a single twirl.

...


Beautiful!
But why do you call it a EDC top? To me that sounds a few leagues below yours.
 
30 minutes you say? But still less than the tungsten top you mentioned in reply #236 in the curtain ring top topic?
I can't watch the video here in holidays, not such good internet connection, so maybe you gave the information aheady there: starting speed? Topple speed?

 5 
 on: Today at 03:34:30 PM 
Started by Iacopo - Last post by Iacopo
ta0 took the words right out of my typing finger!

Aside from test tops, don't recall seeing a straight-edged flywheel from you before. Special commission?

Thank you, Jeremy.

The shape of the flywheel was dictated by the facts that the tungsten plate I have here has only 8 mm of thickness, and I was not willing to buy new tungsten.  Then the client wanted a little diameter.  But also he wanted long spins.  The straight-edged flywheel is a trick for to maintain more moment of inertia, which is important for long spins, in spite of the limits of thickness and diameter.
This 120 grams top, with 41.4 mm of diameter, can spin for up to 30 minutes with a single twirl.

My tops Nr. 18 and 19 too have straight-edged flywheels, but not so much like this new top.

 6 
 on: Today at 03:13:21 PM 
Started by Iacopo - Last post by Iacopo
Is this tungsten top an exception or do you plan to use this metal again?

Thanks for the compliments, Ta0.

At present, I am not planning to make other tungsten tops in the future.

The biggest problem with tungsten is that my fiscal expert says that I must have an invoice for every material I use for things to be sold.
But I can't find tungsten for sale in Italy and it is difficult to have a regular invoice when purchasing from abroad.

Another problem is that tungsten alloys seem to have dishomogeneous density, and tops made with it need to be balanced, (I seem to remember that this was stated in this Forum too);  in my case, I made two tungsten tops, (the tungsten alloy I used is W80CU20), and they both were badly unbalanced when I made them. 
Usually I fine tune the balance of my tops, (if there are not the screws), by sanding a bit the outer part of the flywheel, where needed;
very little sanding is generally needed.
But my tungsten tops were so much unbalanced that I should have sanded enough to make the shape of the flywheel clearly asymmetrical, which is not acceptable.
In this new top, instead of sanding, I drilled a hole at one side of the flywheel to remove weight there, and closed it with a piece of titanium.

Another problem is that tungsten is very hard to machine, and difficult to sand and polish.
But the most important problem by far is the first one I mentioned. 

 7 
 on: Today at 02:43:03 PM 
Started by jim in paris - Last post by Dick Stohr
Happy B"Day and MANY, Many more !!!!!

 8 
 on: Today at 02:38:35 PM 
Started by Iacopo - Last post by Iacopo
BEAUTIFUL TOP!!!  :o The egg case is nice too!  8)

Thank you, Texture.  The egg is a lot of work and it doesn't cost much less than the top itself, so I don't make the cases often, they are nice but clients usually give up.

 9 
 on: Today at 01:58:47 PM 
Started by Iacopo - Last post by Jeremy McCreary
ta0 took the words right out of my typing finger!

Aside from test tops, don't recall seeing a straight-edged flywheel from you before. Special commission?

 10 
 on: Today at 12:46:08 PM 
Started by Iacopo - Last post by ta0
The legend goes on . . .  8)

A beautiful landscape to showcase another exquisite top!

Is this tungsten top an exception or do you plan to use this metal again?

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