How do you make a glass pendulum like this?

With the same computer to control the two beams of laser power are not enough to melt the glass from different directions into the blank glass cube, the two beams of laser superimposed on the power is designed to melt or even gasification of a very small range of glass. A computer pre-programmed three-dimensional graphic is used to control the trajectory of the intersection of the two laser beams, and the glass artifact is largely made by this very reliable and simple process, with the final step being the polishing of the outer surface. At present, the investment in this process is not very large, but the return is quite good. Daily life will always produce a lot of waste old things, in the eyes of craftsmen these can be a treasure, can be used to DIY a variety of fun gadgets. For example, the following craft work network to introduce the beautiful home furnishings small production, ready to waste glass bottles (this shape is a bit unique, you do not have to be exactly the same children's shoes), cork, can lids, twigs, handmade flowers, bryophytes, labels, etc. can be used to turn waste into treasure, DIY production of unique glass bottle decorative furnishings, environmental protection and beautiful.