I would say Design is first then consider, Design type delta Corexy other Cartesian what do you intend to print? (how big will you need the Bed) material i.e Filament what type will you print (will you need a heated bed?) Building your own or buying a pre-built design speed is a kin to size in some regards Most 3D printers are dependent on carriage design Most can print a large item in under an hour or several hours depends on many factors.
Comments
Design type delta Corexy other Cartesian
what do you intend to print? (how big will you need the Bed)
material i.e Filament what type will you print (will you need a heated bed?)
Building your own or buying a pre-built design
speed is a kin to size in some regards Most 3D printers are dependent on carriage design
Most can print a large item in under an hour or several hours depends on many factors.