Thermal straps, thermal links, heat straps flexible heat conductors, heat links, thermal links, for temperature control, heat sinks, avionics, cubesats, satellites, airborne instruments, cooling optics, photolithography semiconductor fabrication, or lasers. Thermotive designs builds tests aluminum, copper, and pyrolytic graphite thermal straps for ground, air and space applications at cryogenic temperatures. Aerospace and lab cryocoolers and thermoelectric coolers are often coupled to thermal st