It's one of my favourite tools. If/when your kids outgrow it, there's also: https://github.com/derkork/openscad-graph-editor https://github.com/derkork/opensc

It's one of my favourite tools. If/when your kids outgrow it, there's also: https://github.com/derkork/openscad-graph-editor https://github.com/derkork/openscad-graph-editor