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Thread: Kerfing Chisels

  1. #1
    Join Date
    Apr 2001
    Location
    Perth
    Posts
    9,769

    Default Kerfing Chisels

    Kerfing chisels are used for deepening the saw kerf in half blind sockets, such as when joining drawer sides to drawer fronts when building drawers.



    There is an article here if you wish to make your own.

    While dovetailing 10 drawers this week, I had requests for information about the kerfing chisel. It has been 10 years since I made one, and I wondered how easily others could do the same. So I began experimenting, and made a few. The article, in the link above, will take you to the construction.

    Frankly, it is not so easy. I sourced stainless steel from paint scrapers at Bunnings, but these are 0.030" thick, and I found this to be too thick (or, thicker than desired). Have you tried thicknessing stainless steel to 0.24"? It is not fun! (Incidentally, most dovetail saw plates are 0.02" thick, and then add a 0.003 set on each side).

    Then I discovered the hard way that the blades will wiggle loose if they are just epoxied in. Consequently, I (double) pinned them in with steel dowels. Drilling stainless steel was also fun!!

    In the end I wound up with 5 extra kerfing chisels. I am not planning on making more - they are very labour-intensive! These are offered to forum members ...

    The handles do not require a ferrule as they are all really hard, tough timbers. I have been wacking them with a steel 225g gennou all week without doing any damage (steel is best you use as you can hear the change in tone when the blade bottoms out).

    There are 3 made from Fiddleback Jarrah, one from USA Hard Maple, and another from some WA Casuarina-type, the name of which escapes me. All beautiful woods, finished with Ubeaut (of course!) Shellawax.



    Fiddle back Jarrah ...



    Hard Maple ...



    WA Casuarina-type ...



    Price (includes postage in Australia) is $110 each.

    Regards from Perth

    Derek
    Visit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.

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  3. #2
    Join Date
    Oct 2014
    Location
    Melbourne, Australia
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    256

    Default

    I'll take a Jarrah one please Derek!

  4. #3
    Join Date
    Jul 2009
    Location
    Armidale NSW
    Posts
    91

    Default

    Iíll take the hard maple one please Derek
    Ross

  5. #4
    Join Date
    Sep 2010
    Location
    Sydney
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    Default

    Ill take the WA casuarina type please

  6. #5
    Join Date
    Apr 2005
    Location
    Sydney
    Posts
    35

    Default

    Hi Derek, a Fiddle back Jarrah, please.

  7. #6
    Join Date
    Jul 2015
    Location
    Brisbane
    Posts
    31

    Default

    Hi Derek,

    I'll take the last Jarrah chisel.

    Cheers, Joel.

  8. #7
    Join Date
    Apr 2001
    Location
    Perth
    Posts
    9,769

    Default

    PMs sent to Ben, wattycoo, Pac-man, Rick, and JK.

    All kerfing chisels now sold, subject to funds arriving before my wife discovers them!

    Regards from Perth

    Derek
    Visit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.

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