Программа

Solid Edge 2D Drafting
Free 2D CAD Software

Whether you need to use 2D CAD software across your company or for a specific 2D design process, Solid Edge 2D Drafting provides production-proven 2D drafting software - for free.

Ссылка на установку:

https://www.plm.automation.siemens.com/plmapp/education/solid-edge/en_us/free-software/free-2d-cad

Доп. информация:
Построение сопряжений
https://cnc.uno/ftp/new/0000100011.pdf

Некоторые вопросы:
https://cnc.im/faq/1115/funktsiya-fillet?show=1117#a1117