Provided by: stlcmd_1.2-1_amd64 

NAME
stl_merge - stl_merge concatenates multiple STL files.
DESCRIPTION
stl_merge concatenates multiple STL files.
usage: stl_merge [ -o <out file> ] [ <in file1> ... ]
Merges binary stl files into a single file. If no out file is provided, data is output to stdout.
stl_merge v1.2 June 2025 STL_MERGE(1)