The cf1 file extension is associated with the Common File Format 1, probably used by some CNC machines.
There is one other file type using
the CF1 file extension!
.cf1 - WOW! data
CF1 file extension - Common File Format 1
What is cf1 file? How to open cf1 files?
File type specification:
The cf1 file extension is related to a format used to transfer die cutting data. Probably used in some CNC machines.
Seems to be very rare used or obsolete file format.
This cf1 file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.