Hapstone T1 Adjustable Angle Knife Sharpener

I sharpen my knives to 10 dps by hand. When I want to change an angle of a knife, say from 20 deg to 15, to keep the new angle consistent, I wanted something like the H1 clamp. I wanted to make the H1 myself from parts in nearby store but could not find bars with thinned ends to hold the knife. That would make problems at 10 dps. Then I found H1. Pictured is a 400€ hand made asymmetrical 21 cm SG2 gyuto originally 20+10 dps which I recently redid by hand to 17+10 and then to 15+10 deg to suit my particular need for it. Picture shows it set for 10 deg sharpening. I also sharpened another 400€ SG2 and one Aogami Super 24cm, both at 10 dps. All my knives are tapered a lot. To test H1, after some knife use, I just make some passes on 2000 and 4000 stones to maintain razor like sharpness. I simply threw a nylon sheet over the table cloth and slide H1 there nicely and quietly. With LOTS of time and patience in tuning the screws, H1 results can be near perfect. Minuses: on pictured thin glass stone and typical thin rubber holder, the H1 can not do 10 dps. I had to saw of few cm from both screws to have 8 to 20+ deg range. Nuts are poorly selected. The nuts toward the screw end are useless and in the way. Instead of plain nuts, H1 should have a lever nuts to enable easy tightening without tools. Tightening with the tools always changes angle slightly! The knife holding end of H1 does very well, but needs tools. Due to imprecise nuts and impossibility to repeatably measure the angles with the angle cube, perfect repeatability using H1 and angle cube is impossible. It takes a lot of time and effort to set H1 up exactly so using it on multiple knives and/or stones is very time consuming, but this is inherent to this simple design, not a fault, just a fact. There are many pluses to the H1. The H1 is perfect to establish a new angle on a knife. Perfect for different angles on the same knife when needed. Using my hands only I can perfectly repeat an established edge angle which is important since H1 is not good for quick touchups. It is perfect if you sharpen one side holding the handle with the right and another side holding the handle with the left hand. H1 is actually very comfortable when used like that. Of course, the curved top third of the knife needs to be done by lifting the handle. The tip can be made perfect. Who can sharpen by hand will immediately feel that the angle set on H1 is not perfect and will fix it. If you can not feel it, you may end up wondering why it does not work. It works, but if you set 0,2 deg lower angle, you will never reach the edge on fine stones. That problem is the same with all the fixed clamp sharping systems, and is actually much worse on all much more expensive guided systems. H1 will help those who can not hold an angle well. Using a maker would be better than angle cube, but I do not want to mark white stones. Just hold the knife with normal two hand grip, as if H1 is not used. Videos showing clamping knife at the middle and soulless pushing the knife across the stone holding it by the handle will damage the knife! EU delivery costing 11€ and taking 10 days is horribly expensive and slow.

Funktioniert, wertige Materialien, macht Spaß damit zu arbeiten, leider nicht wie abgebildet, beide Metallhälften sind schwarz, das ist etwas irreführend. Ansonsten top, als zusätzliches Schärfsystem.

good