Dirty Edge and Clean Edge shots

Moderator: Peter Nowlan

Post Reply
Peter Nowlan
Posts: 1281
Joined: Tue Jan 31, 2017 12:05 pm
Been thanked: 57 times

Dirty Edge and Clean Edge shots

Post by Peter Nowlan »

Image

Dirty Edge, white, light spots reveal the Unclean Edge

Image
Unclean, needs a little more work

Image
Unclean


Image
Clean, objective achieved, Visible Burr removal in hand, invisible burr removal will follow with higher grit stones and variations in pressure. (Invisible to naked eye)

Image
Clean edge, 180 grit stone.


The time difference between my unclean and clean edges varies from 45 seconds to about 3 minutes and I NEVER increase my angle to remove the the Visible Burr.


I hope this helps, it's tricky taking edge shots.

Peter
Gregory27
Posts: 569
Joined: Mon Mar 13, 2017 8:31 pm
Location: Sheboygan, WI
Been thanked: 12 times

Re: Dirty Edge and Clean Edge shots

Post by Gregory27 »

What kind of lighting are you using? Curious if I could use this in my kitchen.
Peter Nowlan
Posts: 1281
Joined: Tue Jan 31, 2017 12:05 pm
Been thanked: 57 times

Re: Dirty Edge and Clean Edge shots

Post by Peter Nowlan »

http://www.leevalley.com/en/wood/page.a ... 3349,56768

It's a magnifying desk lamp. Like something a jeweller would use, it's very good.
milkbaby
Posts: 594
Joined: Sun Jan 29, 2017 11:12 am
Location: Sunny Florida
Been thanked: 2 times

Re: Dirty Edge and Clean Edge shots

Post by milkbaby »

I can see light reflected back from a dull edge quite easily by the light in my kitchen. Sometimes, I'll get close to an under the cabinet fluorescent light to get a better look. These spots on the edge will also feel dull on a slicing or push cut of paper.
Peter Nowlan
Posts: 1281
Joined: Tue Jan 31, 2017 12:05 pm
Been thanked: 57 times

Re: Dirty Edge and Clean Edge shots

Post by Peter Nowlan »

Yes that's it, dull has a face :).

I've known for years about looking at the edge of a dull knife under light to see reflections but I didn't always incorporate that into my sharpening regime.
TommyB
Posts: 268
Joined: Tue Jan 31, 2017 12:06 pm
Location: New Hampshire

Re: Dirty Edge and Clean Edge shots

Post by TommyB »

I find using natural light through a window also works well, even on a cloudy day.
Tom
Peter Nowlan
Posts: 1281
Joined: Tue Jan 31, 2017 12:05 pm
Been thanked: 57 times

Re: Dirty Edge and Clean Edge shots

Post by Peter Nowlan »

Right on Tom thank you and yes I suppose that works very nicely.
Post Reply