Here you can see some handmade diabolo sticks, with different weight, made more for “juggling style”, some ones are for training faster and after adapting the moves with lighter sticks.
I use wood on the thicker ones to keep the weight down, have thicker handles, and keep the center of mass where I want it.
I trided diferent bottom and top diammetes , and for me the best solution is from 20mm to 14mm, because it keep de weight lighter and also de sticks fly more like a regular light weight stick, like DEOS.
This Conic handle are custom made with a winch.
With the conic handle stick, you win a solid prop for toss juggling, and still be able to do suicides and genocides, because the weight of the stick is not that much and also the center of weigh stays in the handle, so you have very steady flights.
I aslo did some juggling sticks to train some complex body thorws, beacuse with culbs, the weight of the object is located more on the body, but with diabolo sticks the weigh is on the handle, so is more eficent training with obects that keep the same weigh distribution.
I used Bellota Hammers M8007A ( 30cm x 20mm to 24mm ), and bike inner tubes. You can find Bellota Hammers A B C D E F, it change de length and the diameter, I tried all of them. The orange ones with tennis grip are M8007D, a little big wider and longer ( 32cm x 24mm to 28mm ).