EXPERIENCE: 

I started inspired to make a hybrid design by looking at pictures of milestones and sketching designs inspired by them. Following the dimensions of a standard dumbell and confirming it with the average human grip radii, I CADDed a design of a milestones like dumbell. The prototype has 5 parts: 2 caps, 2 housings, and a handle. The inside of the housings are also filled with pebbles found at MIT. I printed the parts on the Form 1 using two different resins, the white and the clear, and used TAMIYA paints to paint the prototype. The print material on the Form 1 is not necesarilly best suited for the application. If a future prototype were to be made, I would use a stronger, tougher material and stiffen the handle portion more.