---
title: "Knife Sharpener Small Upgrade"
description: "I've used this knife sharpener that I printed for a few years now. I thought that it was based on the Russian designed TSPROF, but in looking through the..."
date: 2025-08-29
published: true
tags:
  - knife
template: blog-post
---


I've used this knife sharpener that I printed for a few years now.  I thought
that it was based on the Russian designed TSPROF, but in looking through the
history it looks very similar to the USA Edge Pro Inc Apex designs that goes
back to the 1990's.  The angle isn't quite holding like it used to.  I've got a
lot of ideas for my own model, but for now I'm going to print some spacers to
help get repeatable angles.


![PXL_20250822_211720540.jpg](https://dropper.waylonwalker.com/api/file/c587bfe8-e310-429d-a3fd-ee617670f6ef.jpg)

> setting the angle on my sharpener

![PXL_20250822_211926948.jpg](https://dropper.waylonwalker.com/api/file/d09ababd-e1e3-4290-ac35-725181df89b7.jpg)

> Where I want to place a fixed height collar

``` csv
16deg 31.5mm
17deg 34.8mm
18deg 38.0mm
19deg 40.6mm
20deg 43.8mm
21deg 47.4mm
22deg 50.2mm
23deg 52.0mm
24deg 54.3mm
```

## so I may have went to the next level

![30335f07-9cac-4e66-b908-f0e3cfbf7582.mp4](https://dropper.waylonwalker.com/api/file/30335f07-9cac-4e66-b908-f0e3cfbf7582.mp4)