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Blog entry by woodmaker posted 09-25-2012 04:33 PM 849 reads 0 times favorited 7 comments Add to Favorites Watch

I need serious help here.

I have the aforementioned sharpner and can sharpen my plane irons till I can shave the hair off my arm. I sharpen at 25 degrees then change to 30 for the micro-bevel per the instructions.

Yesterday, I was sharpening my 1 1/4” chisel, and could not get it sharp enough to shave an arm hair no matter what! I set the angle at 25 degrees, and then went for a micro-bevel at 30 degrees. What am I doing wrong?

Seems if I can do one I should be able to do the other. I started at 120 grit and went all the way to 6,000.

BTW, these are Craftsman bench chisels. (Did I just answer my own question?)

Also, what angle do you sharpen a spokeshave blade, its not stamped on the blade or tool?

-- Mike



7 comments so far

View wunderaa's profile

wunderaa

193 posts in 891 days


#1 posted 09-25-2012 04:58 PM

What does the face (back) of the chisel look like? Did you lap it as well? Even harbor freight chisels can be sharpened to a razor’s edge…it’s just a matter of holding that edge. There’s no reason your Craftsman’s shouldn’t take a keen edge as well.

View Richforever's profile

Richforever

739 posts in 2408 days


#2 posted 09-25-2012 05:17 PM

I’d agree with wunderaa, that the back is probably not flat enough for the cutting edge to do its thing.

My spokeshave has a 30 degree primary bevel and a 35 degree micro-bevel. It is the common high angle spokeshave. Some of the wooden ones and a Veritas low angle spokeshave (used for removing lots of wood) have 20 degree primary bevel and a 25 degree micro bevel.

-- Rich, Seattle, WA

View chrisstef's profile

chrisstef

11127 posts in 1694 days


#3 posted 09-25-2012 06:02 PM

When i have trouble with the back of a chisel or iron not being flat i dont waste the WS sandpaper. I cut a sanding belt in half and use it on glass starting at a worn 60 grit. It seems to work a little faster than the WS and certainlly less expensive. After the 60 grit i just on the WS with 100 grit.

-- "there aren’t many hand tools as awe-inspiring as the #8 jointer. I mean, it just reeks of cast iron heft and hubris" - Smitty

View woodmaker's profile

woodmaker

266 posts in 1379 days


#4 posted 09-27-2012 04:16 PM

wunderaa I lapped the back of the chisel but maybe not enough. As a newbie its hard to say when its flat enough.

Thanks for the spokeshave angle Rich, now I have a target.

I apologize for not answering sooner, but this thing called work is getting in the way. :-)

-- Mike

View chrisstef's profile

chrisstef

11127 posts in 1694 days


#5 posted 09-27-2012 04:46 PM

scribble the back of the iron/chisel with a black sharpie magic marker, when all the marker is gone you know you’re getting it flat. If only half is gone and some remaining you know which side is out of whack.

-- "there aren’t many hand tools as awe-inspiring as the #8 jointer. I mean, it just reeks of cast iron heft and hubris" - Smitty

View woodmaker's profile

woodmaker

266 posts in 1379 days


#6 posted 09-27-2012 05:21 PM

chrisstef thabnks for that!

This is what I love about this site! So helpful.

-- Mike

View chrisstef's profile

chrisstef

11127 posts in 1694 days


#7 posted 09-28-2012 01:51 AM

Just makin things a lil easier for ya bro. Glad i could help.

-- "there aren’t many hand tools as awe-inspiring as the #8 jointer. I mean, it just reeks of cast iron heft and hubris" - Smitty

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