Joel

and here is how it works. i draw on a piece of paper some angle, does not matter which. on the bottom ray i mark a ruler, and this is for the clay. on this ruler i mark the width of the clay model, it was 9 cm. on the other ray beam, this is for the wood, i mark the thickness of the wood i have, its 6.5 cm. so, this means i need to shrink the clay head from 9cm width to 6.5cm width in the wood carving to ensure the bust fits into my wood.

now, as marked in red, i draw a line commecting the 9 on the clay beam with the 6.5 on the wood beam. after that i draw lines, which are parallel to that red line, through the markings of the ruler on the clay beam (i could make the parallel lines somewhere, does not matter, but its easier to use nicely equidistant lines)

so i get this (please, ignore the crosses for now)

joel_06

this is my measuresment sheet. now, how does it work ? very simple : i measure a distance on the clay with my caliper, say the height of an ear, and then hold it against the clay beam on my measurement sheet like so :

joel_04

we see in this example the size is a tad less than 3.5 cm. (but its not necessary to know that !!) i mark the position on the clay beam with a cross and travel on a parallel line (that means, along the arrow i drew for better explaining) towards the wood beam and mark a cross there. now i put the caliper to the length to this second cross, like so :

joel_05

the caliper shows now the height the ear on the wood need have…. see, very easy, no calculation necessary, but easy scaling…. i can use the same method if i would want to carve bigger than the clay model… (and, of course, in reality i don´t draw the crosses, too much hassle, i made them only for better explaining the procedure)

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5 Comments (+add yours?)

  1. Ed Pitts
    Mar 07, 2010 @ 00:00:09

    That is one of the best ideas I have found.

    No more calculating!

    Thanks, Ed

    Reply

    • dorisfiebig
      Mar 07, 2010 @ 08:36:40

      thanks ed ! its not mine idea, its classical, its just math applied. i love seeing math be useful.

      Reply

      • Bill Voss
        Jun 27, 2010 @ 18:54:32

        FANTASTIC method for scaling!! I am in the process of carving a larger version of a Crucifix from a model. This will save a great deal of time versus calculating.

        I will also share this with our wood carving club as a great “hint”.

        Reply

  2. mike
    Aug 10, 2011 @ 16:45:18

    Doris , you know from WCI, that I love all your portraits.

    Mike/feb

    Reply

    • dorisfiebig
      Aug 11, 2011 @ 11:29:17

      hi Mike, yes i remember that 🙂 thank you for commenting, it is always so very nice to hear feedback. and, joel is a special piece to me. thanks again.

      Reply

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