Upon melting, your chocolate or coating might be very thick —too thick to coat your cake balls. There are reasons and solutions. First of all, shop wisely. I tested.
The 7" Thick Delightful Dong with Balls may be just the erotic tool for the job. Made with a thick, realistic shaft, a decadently flared penis tip, and hot textured balls.
The collars, disks or cones used as bearings for the balls, should be of steel balls, separated by rings of machinery steel inch wide and }& inch thick.