A fused construct including a first end formed into a fused loop, a second end formed into a fused loop, and an intermediate part extending between the loops, wherein the loops and the intermediate part include at least one segment of elongated material. The controller receives information related to movement of a grip in real-space and generates a stereoscopic output for a display device. Furthermore the present invention describes a cartridge for the transportation and risk-free mixing of the described epoxy resin on site. Said channel can be connected to a ring channel guiding a gaseous andor vaporous fluid under pressure, preferably an inert gas under pressure, and controlled by at least one first control valve.