Other BK1 conversions

Conversion of bk1 files to dwg file format

It looks like that some version of AutoCAD made a backup copy of opened CAD image in a BK1 format as some kind of automated function. It is not clear whenever the BK1 file is just renamed copy or somewhat altered, but your best bet is to recover it in the program through normal means, instead attempting some kind of bk1 to dwg conversion or renaming the file.

Open BK1 file    Open DWG file