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Thread: S.E.R.B. holder mod 1

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    Default S.E.R.B. holder mod 1

    In a previous thread:
    (https://www.nscale.net/forums/showthr...r-blade-holder)
    I showed how to make your own Single Edge Razor Blade holder. An improvement on the design uses an easier to work with, cheap material, with less complexity, and THAT makes it easier to build !

    Material needed is a length of 1/16” x ˝” aluminum stock. A 36” length cost me $1.79 at my local Ace hardware. You will need two 4-40 screws 1/4” long and two 4-40 nuts, and some single edge razor blades. I at first thought that 1/16” was too thin and would be too flexible, but that was NOT the case.

    Pic #1 shows new holder in front, old holder behind it, plain straightedge, and straightedge with sandpaper glued to back.

    Cut the aluminum 5” long, mark, center punch, and drill holes as shown in sketch.


    Pic #2 shows materials before assembly.

    Depending on whether you are left or right handed, carefully assemble blade onto blade holder. Align blade holes with handle holes. Insert screws through holes and fasten nuts to screws. Tighten screws.

    Pic #3 shows right-handed assembly, and pic #4 shows left-handed assembly.


    CAUTION ! Razor blades are sharp ! Always USE EXTREME CARE when fastening blade onto holder. Make sure screws and nuts are tightened securely, and check frequently for tightness.

    You can optionally coat your handle with “plasti-dip”. If you don’t coat, at least sand or file any sharp handle edges. I found that the aluminum was smoothly finished, and required very little treatment.

    A blade guard is recommended. I cut mine from hard rubber.

    When cutting your material, make sure you use a straight edge that won’t slip on your surface while cutting. Gluing a piece of sandpaper on one side of your straightedge is probably the BEST tip I can pass on to scratchbuilders. I say “pass on” because it’s not my tip.

    Pic #5 shows a piece of styrene with a template glued on, and ready to be cut.


    Pic #6 shows right-handed cutting method.


    Pic #7 shows left-handed cutting method.


    Moderate sidewards pressure applied towards straightedge while cutting will ensure that blade will stay in contact with straightedge, for a perfect cut. Use moderate downward pressure when making first pass (don’t try to cut all the way through).

    Blade holder should be positioned so that the cutting angle is close to 20 degrees. Less than 10 degrees, and the bottom of holder may raise blade away from material.
    Attached Images Attached Images
    Charter member of CAMRRA.


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    Gary, somthing that I found cool about this cutter was that I could put thin washers on the screws and then an other blade on. this let me cut custom strips that I could curve in any direction needed. this worked for making custom pin strips for me. Thought I would share this with you and every one ealse.

    ___________Just do it in Vinyl!__________


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    I've seen those cutters for thin pieces of tape, but never thought of using washers with the S.E.R.B. holder! Excellent tip Tim!
    Charter member of CAMRRA.

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    In use yesterday while working on Scratch House:

    SERBcutter.jpg

    Had a wee bit o' trouble getting the blade attached, but it worked out in the end. I used the cardboard wrapper the blade came with as an ultra-cheap protector after butchering it and adding some tape.
    www.newenglanddepot.net
    But... what if I don't WANT to weather it? Hmmmmmm??

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    UPDATE: Gary just pointed out that because I didn't follow instructions, I installed the blade wrong. Men aren't the only ones who don't read instructions!
    www.newenglanddepot.net
    But... what if I don't WANT to weather it? Hmmmmmm??

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    Quote Originally Posted by NellsChoo View Post
    Men aren't the only ones who don't read instructions!
    It's not that we don't read instructions, but more that we don't read them until after the job is done... sort of to validate that we guess correctly, or found a better way
    Bryan
    “Simplicity is the ultimate sophistication.” ~ Leonardo da Vinci (1452–1519)

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    I was going to tell you to turn the SERB over!
    Yours,

    Gene

    Turtle Creek Industrial RR

    Link to my Flickr account: https://www.flickr.com/photos/epumph/

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    It sure does seem safer when you install the blade the right way... Forgot to say that it was nice being able to have a strong blade like that to use when cutting that rather thick clapboard siding. My usual hobby knife was not happy with the stuff.
    www.newenglanddepot.net
    But... what if I don't WANT to weather it? Hmmmmmm??

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