Zotebook is an easy alternative to CAD. It interprets your rough sketches and turns them into precise drawings (i.e. vector drawings) that can be laser cut or 3D printed using the zotebook.io platform. Everything you can do is based on recognizing what you draw: to make two lines the same length, just make little tick marks. To square them off, draw a right angle brace. No more hunting for tool modes!
Zotebook is a great tool for thinking and prototyping. It wont force you to add details before theyre important. When youre ready, use zotebook.io to send it to your laser cutter or 3D printer. Try it out and iterate!