The Flashforge 3D Printers are the top quality brand and it is large 3D printer, can print a sturdy, lightweight channel letter sign in just a few hours. Hundreds of channel letters can be printed in two days. It is support to import multiple files, such as CDR/DXF, etc. with the integration of letter shell and frame. The supported multiple frame effect are: Rainbow letter, slanted letters, Arc letter, Mini letter etc. The great feature of this brand is when the filament is used up it automatically stop printing and again the new filament is loaded the the printing is resume.