Review on Adjustable Stainless Steel Planers for Effective Honing and Sharpening by Noah Lewis

I tried sharpening a couple of chisels and it worked great with the 1 1/2" and 1" chisels I have , but not very well on 1/2" and 1/4". The top clamp is good and strong, but if your chisel won't fit in the top clamp you will need to use the bottom clamp. The bottom clamp has a funny shape and actually pushes the chisel out when tightened. If not tightened enough, the chisel will still slip out. The material is of poor quality and a better clamp is needed for smaller chisels. Wouldn't recommend it.