Page 1 of 2 12 LastLast
Results 1 to 15 of 20

Thread: More Pleasant Chisel Back Flattening

  1. #1
    Join Date
    Jul 2014
    Location
    Borger, Texas
    Posts
    1,362

    More Pleasant Chisel Back Flattening

    Hi All,

    I am in the process of flattening the backs on several chisels that I have had for, in some cases, a very long time, and flattening the backs is not all that much fun, as you all know. Currently I am working on an Extra Coarse DMT Dia-Sharp. It is too cold to work outside, so I am working on my desk.

    The other day I was listening to Youtube while I worked on a chisel, and by chance I selected "Royal Marines-Colonel Bogey." The band is marching and has some infantry marching behind them, and they play the Colonel Bogey march.

    Hey that made the flattening a whole lot more pleasant. I find my self keeping time to the March with the chisel on the plate part of the time. One time through the march is about 5 minutes, so each time through I stop to check progress.

    After four to six times through the march I have had enough chisel back flattening for one evening.

    The march is actually a pretty nice piece of music. The euphonium section has really nice counter melodies, and in one section the melody, through the piece.

    Helps the flattening process be a lot more pleasant.

    What do you all do to make those type of activities go faster and more pleasantly?

    Regards,

    Stew

  2. #2
    Join Date
    Sep 2007
    Location
    Longview WA
    Posts
    20,964
    Blog Entries
    1
    It has been a long time since my last chisel flattening. Usually in the shop my music is playing from my iPod through the radio. It is a pretty eclectic mix.

    100_2406.jpg

    The light is reflecting off of a 4' long hunk of granite. With a strip of PSA backed abrasive paper it makes back flattening go pretty quickly. Some of my chisels got pretty warm going back and forth on that thing.

    jtk
    "A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
    - Sir Winston Churchill (1874-1965)

  3. #3
    Join Date
    Feb 2018
    Location
    Seattle
    Posts
    102
    I flattened bunch of Stanley (new) and Narex chisels on EC DMT stone. Did it while watching TV. I do it by counting. Something like I will keep flattening till I count to 500, and won't look at the back till then. If it's not flat then counting starts again.

    After few evenings, screwed up DMT stone (it does not cut good anymore) and aching hands, I had all of them flat.

    Now I use sandpaper on granite for initial flattening. I start at 220 and drop to 150 and even 80 if need be. I go up to 400 grit and sometimes higher if some cut piece is lying around. Then I switch to DMT F and EF. I flattened a 2" Narex and few plane blades this way, and it went considerably faster. I not flattening on DMT again (initial).

    There is nothing that can make it pleasant, except reduction in time.

  4. #4
    Join Date
    May 2013
    Location
    Johannesburg, South Africa
    Posts
    1,039
    If the back is concave then you only need to flatten the first half inch or so.
    "If you have all your fingers, you can convert to Metric"

  5. #5
    First rule, no matter how much you want to put the cutters to work, is no more than one cutter a week. The second is, stop when tired/bored and go do something else. The third is be honest, sometimes a cutter needs grinding back, decide if you can live with a less than perfect back on that cutter until in the natural progression of use and sharpening the problem is fixed. If not, suck it up Bubba and see rule one and two or grind the bevel back.

    "Red Dirt" radio on Pandora helps as does Sweet Maggie Dog at my feet.

    ken

  6. #6
    Join Date
    Apr 2007
    Location
    Columbus, Ohio, USA
    Posts
    2,716
    I just fire up the radio and see what is playing. I have to admit, though, I usually use sandpaper rather than my diamond stones for this. I just purchased this thing, which comes with a nice stand, which gets my fingers away from the base

    https://www.amazon.com/gp/product/B00HXHKW9W

  7. #7
    Join Date
    Jun 2010
    Location
    twomiles from the "peak of Ohio
    Posts
    8,545
    I'm usually done before the guitar solos....besides, the washer and dryer would just drown them out...

  8. #8
    I'll put something on the stereo, maybe have a beer and talk at the dogs while I'm doing it. They always commiserate.
    ~mike

    scope creep

  9. #9
    Join Date
    Jul 2014
    Location
    Borger, Texas
    Posts
    1,362
    Well Progress is being made.

    I have switched to adhesive back sand paper on a granite flattening plate like Anju does. It is going faster, but still slow.

    I use what one of the fellows from quite a while back suggested, Mirka Gold....good stuff. I was using 180 but bought some 120 and switched to that. It seems to hang in there quite a while before getting dull. I start out with light pressure, but as the sandpaper gets a bit duller increase the pressure, and finally end up with a lot of pressure. The sandpaper seems to keep cutting, using that progression, for quite a while. I think it is cheaper than going with the diamond plates, as the diamond plate gets dull too quickly, for the price.

    Like Ken suggested, I tend to go at it about 1/2 hour at a shot. On Saturday I may have 3 or 4 sessions during the day. Progress is being made, but I have lots of chisels to do, chisels for carpentry (old Stanley 60s mostly), chisels for woodworking with a mallet, paring chisels, and now 3 mortising chisels.....but I am getting a closer little by little. At least I think I may be 2/3rds of the way done.

    Stew
    Last edited by Stew Denton; 03-15-2020 at 8:13 PM.

  10. #10
    Quote Originally Posted by Stew Denton View Post
    Well Progress is being made.

    I have switched to adhesive back sand paper on a granite flattening plate like Anju does. It is going faster, but still slow.

    I use what one of the fellows from quite a while back suggested, Mirka Gold....good stuff. I was using 180 but bought some 120 and switched to that. It seems to hang in there quite a while before getting dull. I start out with light pressure, but as the sandpaper gets a bit duller increase the pressure, and finally end up with a lot of pressure. The sandpaper seems to keep cutting, using that progression, for quite a while. I think it is cheaper than going with the diamond plates, as the diamond plate gets dull too quickly, for the price.

    Like Ken suggested, I tend to go at it about 1/2 hour at a shot. On Saturday I may have 3 or 4 sessions during the day. Progress is being made, but I have lots of chisels to do, chisels for carpentry (old Stanley 60s mostly), chisels for woodworking with a mallet, paring chisels, and now 3 mortising chisels.....but I am getting a closer little by little. At least I think I may be 2/3rds of the way done.

    Stew
    Stew

    Hang in there, even if it seems it will never get done. Smart to limit time at any one secession, it is real easy to get bored and/or careless and make more work for yourself.

    ken

  11. #11
    Join Date
    Jun 2010
    Location
    twomiles from the "peak of Ohio
    Posts
    8,545
    Chisel sharpening day, bad back.JPG
    A before...1-1/4 wide chisel, have all sorts of "issues"..
    Chisel sharpening day, bad spots.JPG
    Handle issues, collar issues, loose in the socket...and, who needed a cambered edge?
    The after?
    Chisel sharpening day, fixed, flat back.JPG
    Back flatten, handle fixed..
    Chisel sharpening day, new bevel, fixed handle.JPG
    A single 25 degree bevel, straight and square across.
    Chisel sharpening day, not a paring handle.JPG
    handle? usable...the edge?
    Chisel sharpening day, peel a bit.JPG
    Pared away a bit of saw markings,,,also got a 1/4" wide cut on my finger, that I didn't even feel...
    Honed to 2500 grit, then a clean strop...about a half hour, start to finish..counting the bandaid. Wound up working on 7 chisels that evening...first 6 took 40 minutes..
    Chisel sharpening day. first 6, bevels.JPG
    Some needed a little more work, than the others...
    Chisel sharpening day, worst backs.JPG
    may work on the narrow ones later...

  12. #12
    Join Date
    Aug 2007
    Location
    Dickinson, Texas
    Posts
    6,978
    Blog Entries
    1
    I use a diamond hone.

  13. #13
    Stew,

    Here is a set I've been working on for several weeks. The ones that are bevel up in the box have been sharpened, bevel down are still waiting to have the backs flatten and sharpened.

    chiselPrep.jpg

    As I've said before, it is better to take time to do correctly. At the rate I'm working on these I'll be finished in 2 to 3 more weeks and then it will be just a visit to the stones when needed.

    ken

  14. #14
    I luv my Mirka ROS!

  15. #15
    Stew - I'm slogging through a 2 3/8 plane iron rehab so I can feel your pain. I work from home so I try to take a break from my real job and go give the iron 200 strokes a couple of times per day. I'm repurposing some trizact sheets that aren't that large so 200 strokes doesn't amount to much.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •