Had a go with this just now. Its going to be a pain in the arse for impatient knife NEETs but I thing its okay. I can fix the pyriamid on the stone with a rubber band and go really slowly and it should give me a lasting edge. The angle I want doesnt have a big face and it can wobble a bit when you get the angle right. Its no biggie, its a lot better than nothing. Might have a go with the cheexe knife in a bit.