PART 01 기초제도 및 도면해독 CHAPTER 01 제도의 개요 ········································································ 13 CHAPTER 02 투상도법 ············································································· 25 CHAPTER 03 도면을 작도하는 방법 ·························································· 33 CHAPTER 04 치수기입법 ············································································ 48 PART 02 GstarCAD 실무 기초 CHAPTER 01 GstarCAD 2020 설치 ······························································ 73 CHAPTER 02 GstarCAD 2020 시작 전 환경설정 ·········································· 77 PART 03 GstarCAD CHAPTER 01 GstarCAD 시작 ····································································· 83 CHAPTER 02 CAD 기초명령어 ······································································· 93 CHAPTER 03 좌표계 ························································································ 101 PART 04 GstarCAD를 이용한 캐드실무 능력평가(CAT)2급 따라하기 CHAPTER 01 CAT 2급 기출문제 풀이 ························································ 283 PART 05 3D 모델링 CHAPTER 01 화면 뷰 조정 ········································································· 327 CHAPTER 02 UCS 설정 ·············································································· 330 CHAPTER 03 평면(PLAN) 설정 ···································································· 338 CHAPTER 04 2D 기초 명령어 ······································································ 341 CHAPTER 05 3D 기초 명령어 ······································································· 348 CHAPTER 06 복합 솔리드 작업 명령어 ·························································· 377 CHAPTER 07 3D 편집 명령어 ···································································· 382 PART 06 CAT 1급 기출문제 풀이 CHAPTER 01 CAD 실무능력평가 1급 문제 출제 유형 ······································· 429 CHAPTER 02 CAD 실무능력평가 1급 문제 풀이 ················································ 434 PART 07 연습문제 CHAPTER 01 CAD 실무능력 연습문제 1 ······························································ 465 CHAPTER 02 CAD 실무능력 연습문제 2 ······························································ 485 CHAPTER 03 CAD 실무능력 연습문제 3 ······························································ 523

[머리말] 2015년에 전격적으로 “GstarCAD”로 모든 소프트웨어를 변경하였다. 처음 선택에서는 호환성 문제로 무척이나 걱정했으나, 시간이 지나고 지금은 현명한 판단 이였다는 생각이 든다. 많은 업체 분들도 교육을 받으신 후 기존에 가지고 있던 고정관념에서 많이 벗어났다. 어떤 회사는 구매 부분을 모두 “GstarCAD”로 변경한 업체도 있다. 그렇다. 업체에서도 말한다. 기존의 사용방식과 동일하고, 파일 호환도 완벽에 가까우며, 게다가 가격도 무척이나 저렴하여, 영구 버전을 구비함으로써 소프트웨어 유지비용이 무척이나 저렴해졌다고, 이것이 바로 답이다. 국내에서 판매되는 캐드 프로그램은 외산 프로그램이다. 구입하면 국적으로는 손해이다. 그래서 가능하면 기존의 캐드 프로그램과 동일한 성능, 동일한 기능, 완벽한 호환성, 그러면서도 기존 캐드보다 낮은 금액의 “GstarCAD”를 권해드리고자 한다. 필자는 지금도 “GstarCAD”를 사용하고 있지만, 만족도가 상당히 좋다. 설계하는 업체들의 캐드 도입에 대한 생각을 새롭게 고려해볼 가치가 있다고 생각한다. 예제 문제를 많이 작성한다고 해서 설계실력이 늘지는 않는다. 다만 캐드 명령어를 사용하는 능력은 향상될 것이다. 또한 캐드 명령어를 많이 안다고 설계 실력이 좋은 것이 아니다. 캐드를 잘해서 취업된다고 생각한다면 큰 오산이다. 10년 전에는 통했지만 지금은 그렇지 않다. 생각해보자! 캐드를 잘 사용해서 취업했다고 하자. 업체에서 작성된 도면을 주고 그대로 캐드로 옮겨놓으라는 업무는 없을 것이다. 신입들이 처음 하는 설계 업무는 실제 부품을 보고 측정기로 측정하여 도면을 작성하는 능력이다. 그래서 앞에서 언급한 카피(복사)를 하는 오퍼레이터는 의미 없다는 말이다. 본 교재는 초기 취업 시에 현업에 쉽게 적응할 수 있는 첫 단계를 마무리하는 능력을 키우는 것이다. 여기에 의문을 갖지 말라. 현업에 종사하는 분들에게 물어보면 명쾌한 답을 알려주실 것이다. 신입으로서 열 마디 먹을 욕을 두 마디 정도만 먹게 해줄 자신이 있다. 하나도 놓치지 말고 열심히 공부해라! 설계를 할 때 캐드 명령어는 최소 4~5개에서 30개를 넘지 않는다. 도면 작도와 설계에서 최소한의 캐드 명령어를 사용해 기술할 것이다. 말 그대로 “닥치고 이것만 해!”이다. 그래도 설계하는데 지장이 없을 것이다. 최소 명령만 한다고 걱정하지 말라, 기초를 마치고 나면 고급 명령어들은 스스로 깨우칠 것이다.