Microdrive designs for silicon probes. Assembly instructions can be found in the assembly_instructions_rat1-2inch_v20.pdf file or at these links: 1. Microdrive assembly: https://youtu.be/rjxaH515N64 2. Probe attachment to microdrive: https://youtu.be/2L5RHcbsU7o 3. Probe recovery: https://youtu.be/T5gyuZVKXo8 The .stl files are optimized for Formlabs Form2 printer and Grey-v4/Clear-v4 Resin. For other printers and/or resins, some modifications may be necessary. 1 version is made available here: v21: shell base 3.2 x 7.5 mm (WxL); height: 16 mm; travel distance 4.8 mm This microdrive was modified based on Hiroyuki Miyawaki's design. The latest version of his microdrive is available at https://github.com/Mizuseki-Lab/microdrive. The original idea of the drive is described in the following paper. Micro-drive and headgear for chronic implant and recovery of optoelectronic probes Jinho Chung, Farnaz Sharif, Dajung Jung, Soyoun Kim & Sebastien Royer Scientific Reportsvolume 7, Article number: 2773 (2017) doi:10.1038/s41598-017-03340-5 https://www.nature.com/articles/s41598-017-03340-5 The designs are desitributed under GNU GPLv3 license.