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Frame Cutting Method For 45

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  • Frame Cutting Method For 45

    Good day

    I would like to share with you my way of cutting 45 for frame.

    Instead of messing-up with protractors, I used big dedicated plastic triangle.

    For a 45 frame to be square and the angles to fit, I made 3 things:

    1. I’m cutting the frame members (2 and 2) to the same “final length” (see Note).

    2. To overcome small deviations from 45, I'm cutting the 45 on the left and right of the blade, so each corner will fit horizontally and vertically (If the blade is not exactly at 90).

    3. To be sure that; when I cut the 45 the length of the members will not change I made kind of “stop” or “limiter” as you will see in the pictures.

    Note: Because the vertex of the triangle is at the center of the kerf, each cut will reduce the length of the frame member by half a kerf, and becase we are cutting both sides of each member, each member length will be shortened by one kerf length.
    To make it clear; if you are using 1/8” kerf blade and you are planing a 20” x 20” frame, cut your members to “final length” of; 20-1/8”, the 1/8” will be removed during the 45 cutting.

    Regards
    niki


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    Last edited by Bill MacDonald; 03-13-2010, 11:44 AM. Reason: Attached pictures

  • #2

    Re: Frame Cutting Method For 45

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    Last edited by Bill MacDonald; 03-13-2010, 11:46 AM. Reason: Attached pictures

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