Merge multiple .MOBI files into one [closed]

Question

Downloaded a book in the .mobi file format. The files came separated by chapters. Hoping to find an application or a way to merge all the .mobi files into one single file.

Answer 1

I was able to get this to work by doing the following steps

1. Use calibre to convert all mobi to epub
2. Download LRF-EPUB-TOOLS to merge the epub books
3. (Optional) - Use Sigil to then fix the book (make sure chapters in right order, etc)
4. Use calibre to convert the new epub back to mobi

This seems like a lot of steps but it produces a single mobi.

Answer 2

Try converting like this.