Hi, yes you might be able to get them from wollies but they are not the Borner V-Slicer they are some cheap make. It is a mandolin and I wouldnt recommend any other than the official Borner V-Slicer.
Mark - No need to bung in the dishwasher but im sure you can, all you need to do is rinse it in water its as simple as that. However one thing I did find is that if you chop a lot of carrots the slicer can get stained orange.