Good Day.
May be, you are interesting in this tool.
it's good for sewing thick mateerials. And leather too.
If you are interesting in it, you can visit my IndieGoGo (like KickStarter) Campaign Page and sign in! http://igg.me/at/tfs/x/940141
You can see some video about it in my YouTube Channel https://www.youtube.com/user/RusikR2D2