Dear colleagues, I would like to take this opportunity to remind you and invite you to the seminar of carpenter Petr Růžička, which we are organizing as part of the assignment for first-year students. The start will be on Thursday, March 7, 2019, at 11:00 AM with the hewing of a beam at Studentské náměstí, followed by lectures in the afternoon on the topic of construction in the large hall of building G. On Friday, March 8, 2019, starting at 9:00 AM, there will be lectures on the topic of geometry. Looking forward to seeing you, Jiří Žid, Vladimír Balda, and Petr Rezek.