Here is an educational robot from Elephant Robotics that can write, draw, and laser engrave. The ultraArm P340 has a working radius of 340mm and payload of 650g. It has ±0.1mm repeatability. This kit is ready for Python programming. It is based on Arduino but also allows drag & drop programming.
ultraArm is compatible with Windows, macOS, and Linux. It supports ROS simulation. It uses 3 stepper motors for smooth performance. It works with a variety of end effectors.