A fully built 6" prop with the correct pieces weighs 230 grams.Thanks to almar bouwman for providing that
Is that still floatable????
Bare in mind this would have been built with no consideration for weight but it just gives an idea.
couldn't tell ya. The only thing you can do is take the plunge and risk destroying a $100 floating globe if it doesn't work. That's why I waited 2 years before doing it to mine.:lol.
My suggestion would be to get a very sensitive scale that can accurately measure fractions of a gram.
1. Weigh the globe as it is out of the box to get your standard.
2. remove the globe graphic, then make sure it still floats and weigh it again to get the difference (weight of the graphic)
3. If the one you get is like mine, the globe is in two halve that fit together like a plastic easter egg. open it up and dump all the parts in it and close it up. If it STILL floats, you're fine and you don't have to worry about it much.
If not, you'll have to start cutting the weight down.
4. drilling the holes for the parts will remove a good portion of the globe which will lighten it up a bit so you'll just have to go at it slow, weigh and test float it often.
5. If worse comes to worse, you could sand out the interior of the globe to make it thinner to try and lighten it up, but risk potentially sanding through it, ruining it.
The most important thing is DO NOT TOUCH THE MAGNET. Even if it is just seemingly hot glued into the inside of the globe, the angle and position is crucial to allowing it to float and spin (if your globe offers that option)
the magnet in my globe is a tad off center and mounted at a very slight angle. This is so there is a difference in pull as it turns, which allows the device to ever so slightly pull and release, which causes the spin.