StretchLearn Course

Sharpen Any Knife to Shaving Sharp, by Hand

Edge geometry, the right angle, a coarse-to-fine stone progression, the burr, and stropping, taught the way it actually works.

Preview Curriculum Back to Catalog

Beginner8 hr 50 minSelf PacedRegistered

Course Overview

What this course is designed to develop

This course takes you from a dull, rounded edge to a knife that pushes cleanly through a tomato or shaves arm hair, using whetstones and a strop rather than pull-through gadgets. You will learn edge geometry and steel types, how to choose and hold a bevel angle, the grit progression from coarse repair to fine polish, and how to feel and remove the burr that tells you an edge is truly sharp. By the end you can sharpen a chef's knife, a paring knife, and a folding pocket knife, keep them keen with a strop and honing rod, and maintain a serrated bread knife without ruining it.

Learning Outcomes

What the learner should be able to understand, build, or execute.

Explain edge geometry, bevel angles, and common steel types and how they affect sharpening and edge holding

Select whetstone grits and build a coarse-to-fine progression matched to the knife's condition

Set and hold a consistent sharpening angle on a water stone using guides and feedback

Raise, detect, and fully remove a burr to produce a clean, apexed edge

Strop and use a honing rod to refine and maintain an edge between full sharpenings

Test sharpness reliably and sharpen a chef's knife, paring knife, pocket knife, and serrated blade

Curriculum Preview

Inside the curriculum: a structured path from fundamentals to execution.

Preview the course structure, see how the modules build on one another, and understand the path this program is designed to take you through.

Module 1

Module 1: How a Cutting Edge Works

Build the mental model the whole craft rests on: what an edge actually is, how bevel angle trades sharpness against durability, and how steel type changes the way a knife sharpens and holds.

3 lessons

Edge Geometry: Apex, Bevels, and AngleContent · 45 min

Preview Enabled

Choosing a Bevel Angle for the JobContent · 40 min

LMS Access

Steel Types and How They SharpenContent · 45 min

LMS Access

Module 2

Module 2: Whetstones and Holding the Angle

Get your stones working and learn the core motor skill of sharpening: setting up a water stone, holding one steady angle, and reading the burr that tells you the edge is meeting.

3 lessons

Whetstones, Grit, and SetupContent · 50 min

LMS Access

Setting and Holding a Consistent AngleContent · 50 min

LMS Access

The Burr: Raising, Reading, and Removing ItContent · 45 min

LMS Access

Module 3

Module 3: Refining, Stropping, and Maintenance

Take a freshly apexed edge from sharp to keen and keep it that way: progress through fine grits, strop to a polish, hone between sharpenings, and test honestly.

3 lessons

Grit Progression and Refining the EdgeContent · 45 min

LMS Access

Stropping to a Keen PolishContent · 40 min

LMS Access

Honing Rods and Between-Sharpening MaintenanceContent · 40 min

LMS Access

Module 4

Module 4: Testing, Repair, and Special Edges

Prove your edges objectively, fix chips and reset damaged bevels, sharpen real kitchen and pocket knives end to end, and handle serrated edges without ruining them.

3 lessons

Testing Sharpness HonestlyContent · 40 min

LMS Access

Repairing Chips and Sharpening Real KnivesContent · 50 min

LMS Access

Maintaining Serrated EdgesContent · 40 min

LMS Access

Built for Application

A complete learning path, not a one-off inspiration hit.

This program is designed around progression: focused lessons, structured modules, applied resources, assessments, and a course rhythm that turns information into usable capability.

knife sharpeningwhetstoneedge geometrybevel angleburr removalstroppinghoning rodserrated edge