Isaac Perry, 5, checks out a cube produced by the Soldotna Public Library’s new 3D printer during a demonstration at the library Thursday, Oct. 19, 2017 in Soldotna, Alaska. The library acquired the machine, which can print three-dimensional objects out of plastic based on a submitted pattern, in July and is now making it available for public use. It’s currently free, supported by funds from the Soldotna Library Friends, with a suggested donation of $3 per print. Eventually, if demand outpaces supply, the library expects to have to establish a fee, according to the 3D printer policy. (Photo by Elizabeth Earl/Peninsula Clarion)

3D-printed plastic replicas of Darth Vader’s helmet from the “Star Wars” movie sit on a table at the Soldotna Public Library on Thursday, Oct. 19, 2017 in Soldotna, Alaska. The library acquired a 3D printer, which prints three-dimensional objects in plastic based on submitted patterns, in July and has opened it to public use. It’s currently free, supported by the Soldotna Library Friends, with a suggested donation of $3 per print. (Photo by Elizabeth Earl/Peninsula Clarion)

A 3D printer prints plastic replicas of Darth Vader’s helmet from the “Star Wars” movies at the Soldotna Public Library on Thursday, Oct. 19, 2017 in Soldotna, Alaska. The library acquired a 3D printer, which prints three-dimensional objects in plastic based on submitted patterns, in July and has opened it to public use. It’s currently free, supported by the Soldotna Library Friends, with a suggested donation of $3 per print. (Photo by Elizabeth Earl/Peninsula Clarion)