RT Journal Article SR Electronic A1 Podaný, Jan A1 Tomíček, Jan T1 Analysis of small holes manufacturing for optomechanical components JF Manufacturing Technology Journal YR 2020 VO 20 IS 2 SP 229 OP 236 DO 10.21062/mft.2020.036 UL https://journalmt.com/artkey/mft-202002-0014.php AB Small holes can be manufactured by several ways. It is important to define in what dimensions the small holes vary. Anyway, drilling is one of the oldest technologies of holes manufacturing. In small dimensions we use the term microdrilling for description. Beside this conventional way of manufacture there are also unconventional methods. Microdrilling bits very often break before they are worn. Therefore, the tool life of these bits its quite unexpectable. It is due to relatively high load against the drill bit strength. So, it is important to choose proper drill bit material, cutting geometry, construction, process liquid, clamping and cutting conditions. These parameters are import for achieving ideal conditions for microdrilling. Even a tiny change in pre-seted parameters can lead to destruction of these delicate tools. Fiber arrays are designed and manufactured for precise positioning of optical fibers in row (1D) or in plate (2D). Fiber arrays can contain most of fibers including polarization maintaining fibers (PMF).