Hario Skerton Coffee Grinder Top

The [Hario Skerton](http://hario.co.uk/products/ceramic-grinder-skerton) is a manual coffee grinder. Unfortunately, it doesn't have a top, so rough unground shards of coffee fly out of it during grinding.
This Thing fixes that! Thanks to Thingiverse user [sjg](http://www.thingiverse.com/sjg/about) for help with the model.