3-in-1 DIY Knife Sharpening System Jig

**Mazay** · May 17, 2020, 12:39 PM

I made an universal jig for sharpening:
- knives;
- scissors;
- chisels.

**Crusty** · May 17, 2020, 01:04 PM

That's much better than the Apex clones made from recycled plastic trash. I enjoyed seeing you use all the homemade tools to produce this sharpener as much as the project itself, and you get extra kudos for not putting on a space suit just to rub some linseed oil on the finished parts.

**DIYer** · May 17, 2020, 02:48 PM

Thanks Mazay! We've added your Sharpening Jig to our Sharpening category,
as well as to your builder page: Mazay's Homemade Tools. Your receipt:

Sharpening Jig by Mazay

tags: jig, sharpening

**Karl_H** · May 18, 2020, 07:25 PM

Originally Posted by Crusty

I enjoyed seeing you use all the homemade tools to produce this sharpener as much as the project itself.

I agree.

Are you calculating/measuring angles for your edge, or just getting close enough to the existing angle?
I am sure that tomato can't tell an 8 degree angle from a 9 degree angle.

Thanks for sharing!

Karl

**Crusty** · May 18, 2020, 08:29 PM

If you're not reprofiling an edge, the best way to set the angle is to draw on the bevel with a sharpie, then find the correct angle using light test strokes that grind fully across the edge bevel by observing the ink taken off.

**Mazay** · May 19, 2020, 01:38 PM

Originally Posted by Karl_H

I am sure that tomato can't tell an 8 degree angle from a 9 degree angle.

That's a great tomato joke. You made me laugh.

Originally Posted by Karl_H

Are you calculating/measuring angles for your edge, or just getting close enough to the existing angle?

I am using protractor application on a smartphone. It turns out a very accurate measurement.

At first, I planned to calculate the angle according to the size of the device, this would give an accuracy of about + - 1 degree, taking into account the different projections of the knife tip. Based on the calculations, just make a set of sticks that would allow you to quickly measure the distance from the base to the bottom of the hinge. But using the application turned out to be easier, with higher measurement accuracy.

**Mazay** · May 19, 2020, 01:43 PM

Originally Posted by Crusty

If you're not reprofiling an edge, the best way to set the angle is to draw on the bevel with a sharpie, then find the correct angle using light test strokes that grind fully across the edge bevel by observing the ink taken off.

This is a good tip - I use a felt-tip pen when sharpening a chisel and a scissor (I prefer to sharpen knives on the protractor)