Dear Lucia, our company Laser Light Technologies has a lot of experience machining Kapton including drilling holes with accuracy of +/- 3 um. You can find more info about our capabilities at out web site www.laserusa.com and you also can contact me via phone or e-mail below. Regards, Alex Pozdin, Director of Engineering 5 Danuser Dr. Hermann, MO 65041 USA ph. 573-486-5500 e-mail: apozdin@laserusa.com fax 573-486-5540