talkFestool  

Go Back   talkFestool > Projects, Methods, and Techniques > Sharpening

Sharpening Discuss sharpening methods, materials, and equipment.

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 09-01-2012, 09:30 PM
TahoeTwoBears's Avatar
Member
 
Join Date: Jul 2008
Location: South Lake Tahoe, CA - Minden, NV
Posts: 1,154
Send a message via ICQ to TahoeTwoBears
Default A sharpening puzzler

I normally polish the backs of tools until they're mirror like. Today I started to polish up some new plane blades. I'm using Shaptons and start on new blades with 500 then on to 1000/4000/8000/16000. I flatten the backs with the 500 and then it doesn't usually take long with the other stones. Today, I get a shine (but with visible scratching) with the 500 and then when I move up, the metal is turning gray. You can tell it's polishing, and the scratches are disappearing, but the gray cast bothers me. Any ideas??????????

Oh, New Lie-Nielsen blades.

Last edited by TahoeTwoBears; 01-24-2013 at 08:59 PM.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #2 (permalink)  
Old 09-02-2012, 12:39 AM
RWeber's Avatar
Member
 
Join Date: Jul 2008
Location: Lincoln, NE
Posts: 1,396
Default Re: A sharpening puzzler

Maybe you wore through the tool steel plating and got down to the pewter casting underneath
heh heh
( = no clue )
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #3 (permalink)  
Old 09-02-2012, 12:46 AM
Member
 
Join Date: Jul 2008
Posts: 2,424
Default Re: A sharpening puzzler

No idea why that's happened...
Have you tried them out?
One thing to remember about blade back is, they don't need to be shiny. Flat and smooth where the two edges meet is the key to a sharp blade.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #4 (permalink)  
Old 09-02-2012, 05:38 AM
TahoeTwoBears's Avatar
Member
 
Join Date: Jul 2008
Location: South Lake Tahoe, CA - Minden, NV
Posts: 1,154
Send a message via ICQ to TahoeTwoBears
Default Re: A sharpening puzzler

Nope, they're defintely flat and sharp. I just don't understand the gray haze when I used to get them to a mirror like shine. Another person suggested that I was progressing through the grits too quickly and not clearing off the previous "haze". I'll give it another go, even though they work just fine now.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #5 (permalink)  
Old 09-02-2012, 12:48 PM
derekcohen's Avatar
Member
 
Join Date: Dec 2009
Location: Perth, Australia
Posts: 375
Default Re: A sharpening puzzler

Are you using the stones dry or wet. If wet, how much water? Anything added to the water?

Regards from Perth

Derek
__________________
Articles on furniture construction, shop tools and reviews at http://www.inthewoodshop.com
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #6 (permalink)  
Old 09-05-2012, 06:45 AM
FenceFurniture's Avatar
Member
 
Join Date: Sep 2012
Location: Close as dammit to Sydney, Oz
Posts: 133
Default Re: A sharpening puzzler

It sounds like a cross-contamination haze (e.g. going from a water wet diamond plate to oil based diamond paste), but you're using Shaptons all the way, so no further ideas sorry. Also, even when I get that, it usually goes by the time I reach 14,000 paste.
__________________
Please sign my Petition to get decent Saw Files made...it takes a few seconds - help us get a result!
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #7 (permalink)  
Old 01-24-2013, 09:01 PM
TahoeTwoBears's Avatar
Member
 
Join Date: Jul 2008
Location: South Lake Tahoe, CA - Minden, NV
Posts: 1,154
Send a message via ICQ to TahoeTwoBears
Default Re: A sharpening puzzler

Problem solved. It seems that when I wash the stones off at the end and then only swipe the blade in one direction, the clarity improves. It would appear that going back over the swarf, no matter how fine, "contaminates" the finish. Doesn't seem to impact anything one way or the other, just bothered me.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT +1. The time now is 09:49 PM.