After around 20 minutes the blades are removed and cleaned. They come out covered in the dirty diamond paste / oil solution so are given a quick wipe with a paper towel followed by a brush with cleaning solution. This cleans all the residue away from between the teeth and after a wipe with a cloth they are oiled and packed for return. If you look at the photo below you'll see where on the blade the sharpened area looks like. Between 0.5 - 1mm from the edge there is a slightly darker area. That is what a sharp edge looks like when cleaned and dried. After it's oiled it's harder to see and you've got to hold it at the right angle. Sorry the photo is not at the best focus but we've had to zoom right in.
To order this service for your blades please click here.