Update:　2022/2/2 (five 2!!!) To make the knife easier to handle, the slider was updated to have a wider top surface. I recommend you try the wider one first.

You may need to print a mirrored slider to polish the bottom part of the knife, or just polish the small portion without the slider.

My whetstone is larger than the original one. The size is 210×70×15mm. And the print size of my printer is 200x200mm. So I cut the stopper and shorten the base, and make it wider.

Also, I thought it would be better to tilt the support. Then, I made this.

The touching angle is16 deg.

I was a little worried about slipping of whetstone, but it did not slip on the base.

I've only used it a few times. It may need some improvements to make it easier to use, but for now it works.