The purpose of this research is to determine the effect of twist drill angle variations and spindle rotational speed on the surface roughness of S45C steel in the drilling process. The method used in this research is the experimental method. The independent variables used in this study are variations in twist drill angle (118°, 122°, 125°) and spindle rotational speed variations (1036 rpm, 1340 rpm, 1630 rpm). The dependent variable used is the result of surface roughness in S45C steel. While the control variable used is a feed rate of 0.18 mm/round. The results showed the highest surface roughness was obtained at 125° twist drill angle variation and spindle rotational speed of 1630 rpm with a roughness value of 8.590 µm, while the lowest surface roughness value was obtained at 118° twist drill angle variation and spindle rotational speed of 1036 rpm with a roughness value of 2.898 µm. This research can be developed to find standards from other aspects that affect the results of the drilling process.

This study aims to: (1) identify problems of management of facilities and infrastructure practices of the automotive engineering department at Muhammadiyah Gamping Vocational School, (2) find the causes of problems management facilities and infrastructure practices of the automotive engineering department at Muhammadiyah Gamping Vocational School, and (3) formulate solutions to solve problems facility management and infrastructure practices majoring in automotive engineering at Muhammadiyah Gamping Vocational School. This research was conducted in March 2020. This research is a descriptive research using questionnaires and interviews to retrieve data. The population in this study were: (1) the principal, (2) the vice principal in the field of facilities and infrastructure, (3) the head of expertise competence, (4) the head of the workshop, and (5) the technician/toolman. Data analysis techniques using descriptive analysis techniques. The results showed that: (1) Problems that exist in the management of facilities and infrastructure practices of the automotive engineering department at Muhammadiyah Gamping Vocational School : (a) lack of motivation to work, (b) facilities and infrastructure are not well organized, (c) taste lacking, (d) low work discipline, and (d) low technical competence; (2) the causes of problems that occur include: (a) educational qualifications that are not appropriate, (b) do not have relevant expertise certificates, (c) there is no education and training that is in line with expectations; (3) an alternative solution that can be held is training of facilities and infrastructure managers in the practice of automotive majors at the Muhammadiyah Gamping Vocational School with competencies: (a) technical competence, (b) communication, and (c) workshop management.

The sending of 1200 educators and education staff abroad in 2019 is one of the government's efforts to improve teacher competencies to strengthen education in Indonesia so that it is more developed and equal with developed countries in the world. The purpose of the country which I will present this time is the German state, at the Intercompany Trainning Mercedez Kraftfahrzeuggewerbe Saarländischer KFZ-Verband Trainingszentrum - Saarbrücken Germany. What is very interesting about the German state is the very close relationship between the industrial world and the world of education, where Germany was the first country to initiate a dual system education system (Dual System Education). Teaching methods use the Diagnostic Trouble Box as used in Germany, as one of the interesting methods and media and can find out students' analytical skills easily and accurately, especially in learning electrical vehicle automotive.