I started 3D printing with a small Renkforce RF-100. In the meantime I have switched to a larger 3D printer via the Renkforce RF-2000, which I still use occasionally. Currently I mainly use the QidiTech X-Max for large prints and the Flashforge Creater 2 Pro for dual color prints or prints that require the use of water-soluble support. I have now added a Bambulab P1S with AMS to my 3D printer in order to be able to produce multi-colored prints. This 3D printer is currently mainly used. For 3D design I mainly use openScad or Fusion360.