pon-pon-loader is an yet another 4chan thread image grabber in go.
The main "feature" (lol) is a watch flag. So you can run the downloader with a watch flag and all images will be downloaded until 404.
make
./bin/pon-pon-loader http://boards.4chan.org/vr/thread/XXX /path/to/result/folder/
or for downloading all images until the thread dead
./bin/pon-pon-loader --watch http://boards.4chan.org/vr/thread/XXX /path/to/result/folder/