WWA Info Exchange

For Woodworkers By Woodworkers
It is currently Tue Nov 21, 2017 6:04 pm

All times are UTC - 5 hours




Post new topic Reply to topic  [ 9 posts ] 
Author Message
PostPosted: Fri Mar 19, 2010 6:14 pm 
Offline
ModerDude/
User avatar

Joined: Tue Mar 26, 2002 1:01 am
Posts: 4104
Location: London, England
...what should you do before you grind and hone the bevel?

Ralph :wink:

_________________
...Did I mention it rains here?

our other interests:
https://my-meccano.blogspot.co.uk
http://notinmyfridge.blogspot.co.uk


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 19, 2010 6:28 pm 
Offline
Veteran
User avatar

Joined: Thu Sep 20, 2001 12:01 am
Posts: 12033
Location: La Plata, Maryland
Flatten the back???

Horray!! I get the first new soggy point!!!

Welcome back, Ralph!!

_________________
Uncle Fester WWAMDAUX#3
La Plata, Maryland
Does Anyone Have A Comb?
Home Of A Beautiful DJ 20
I Say.... BUY DELTA!!
10,000 posts--Easter Sunday, 2008--7:43pm


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 19, 2010 6:37 pm 
Offline
ModerDude/
User avatar

Joined: Tue Mar 26, 2002 1:01 am
Posts: 4104
Location: London, England
OK Larry you get the first soggy points all wrapped up in a soggy plain brown envelope :D Lets keep this going...

Why do you flatten the back?

Ralph :wink:

_________________
...Did I mention it rains here?

our other interests:
https://my-meccano.blogspot.co.uk
http://notinmyfridge.blogspot.co.uk


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 19, 2010 7:16 pm 
Offline
Veteran
User avatar

Joined: Sun Dec 01, 2002 1:01 am
Posts: 1147
Location: Kerrville, Texas USA
IF the back is not flat the chisel will be curved and will not produce a true straight line, or cut, of the edge of the mortise will be cupped or curved.

Duan

_________________
Duan Packard
Kerrville, Texas

dum vivimus, vivamus


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 19, 2010 8:03 pm 
Offline
Veteran
User avatar

Joined: Mon Jun 18, 2007 5:35 pm
Posts: 3604
Location: Hutchinson Ks
To insure that the chisel is sharp equaly all the way across the blade.

Rog

_________________
Dont badmouth no strangers, they just friends you aint met yet.

An ounce of responsibility is worth a pound of State and Federal laws.

I spent most of my money on woodworking
tools and beer, the rest I just wasted.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 19, 2010 9:30 pm 
Offline
Veteran
User avatar

Joined: Sat Sep 20, 2003 12:01 am
Posts: 298
Location: Montreal
A good edge requires two nice flat surfaces that intersect. A perfect bevel that meets an as-machined back looks like a mountain range when magnified...

Welcome back Ralph!


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 19, 2010 9:59 pm 
Offline
Veteran
User avatar

Joined: Fri May 12, 2006 9:37 pm
Posts: 5398
Location: Tucson, AZ
I have a related question that I was wondering about earlier this week while sharpening

when you first sharpen a chisel is it important that you flatten the back first or can you do it after you hone the edge?

In my (very very limited experience) I flatten/clean up the sides first (and file the corners if appropriate such as with a smoothing plane iron), then the back, then the edge but the other day I did it differently because I was already at my sharpening wheel-- I did the hollow grind, then sides (I use sandpaper for the sides) then back, then microbevel. (again, on sandpaper)

Does it matter?
Thanks in advance
Lawrence


Top
 Profile  
 
 Post subject:
PostPosted: Sat Mar 20, 2010 6:36 am 
Offline
Veteran
User avatar

Joined: Tue Oct 19, 1999 12:01 am
Posts: 1693
Location: Dublin, OH
It's easiest???

_________________
Sean

Countin' flowers on the wall,
that don't bother me at all,
smokin' cigarettes and watchin' Captain Kangaroo,
Now don't tell me I've nothin' to do.

Second recipient of the D'oh Award. 4-13-08


Top
 Profile  
 
 Post subject:
PostPosted: Sat Mar 20, 2010 5:25 pm 
Offline
ModerDude/
User avatar

Joined: Tue Mar 26, 2002 1:01 am
Posts: 4104
Location: London, England
Woodsurfer gets the bonus points :-D When a chisel (or plane iron etc.) is new the finish is usually rather coarse. The back should be first flattened and then refined to a fine finish. The bevel can then be honed and polished to the same level producing a good cutting edge. The work on the back of the chisel need only be done once as all subsequent honing will be carried out in the bevel.

Lawrence

You should always refine the back when the tool is new and thereafter work on the bevel/micro bevel. I don't worry about the sides but I do remove the arris with a fine stone as these can become very sharp and will make lots of fine cuts in your fingers as you hold the chisel... DAMHIKT 8)

Ralph :wink:

_________________
...Did I mention it rains here?

our other interests:
https://my-meccano.blogspot.co.uk
http://notinmyfridge.blogspot.co.uk


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group