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Thread: copying 3d objects
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23rd June 2007, 06:17 PM #1GOLD MEMBER
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copying 3d objects
Last month I briefly attended the local woodcarvers' group meeting as a soon-to-be member and spoke with a member who was copying a small ceramic statue profile with the ancient technique of looking it through the squares made by intersecting strings stretched on a frame.
My thought was that in this age of digital imaging there must be a better way, and here is what I came up with.
The handsome model in the pictures is one of the three Wise Men, but the technique would work with an artist's mannequin or your clay model for a new creation.
1. place the model square against a rectangular block that just fits the outline of the model (photo 1)
2. photograph the front or back of the model (photo 2)
3. rotate the model 90 degrees and photograph the left or right side (photo 3)
4. crop the photos to match the rectangular background (minor adjustments to straighten up the photo might be required )
5. paste the photos in a Word document (print view) and resize them, with the help of the vertical and horizontal scales, to the size wanted (might need to print on numerous a4 pages if the work is going to be that big- photo 4)
6. glue the printed page(s) on your block of wood on two sides. For a small piece like this example the line between the photos sits on the corner of the block
7. cut the profile of the blank on all four sides, starting from the two sides that have no picture on the waste side. For the last cut the cut out picture needs to be temporarily attached on top again
8. the cut blank is ready for carving (photo 5).
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23rd June 2007, 08:09 PM #2
I like it. Though, I'm not a carver, but its something I've always wanted to do.
I'm guessing from here (photo 5) you could lay the printouts beside your blank and draw in the high spots into the blank by eye.....like with a pen. eg. where the wrinkles in the coat are etc etc etc...on both sides.
For me, it still looks daunting from here on though.
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24th June 2007, 04:21 AM #3
Thanks a heap for passing on such a brilliantly simple idea F&E......A perfect solution for blokes like me that can't draw a straight line And it's especially easy in these times of instant digital photography....maybe you should have patented the idea? But thanks again, opens a whole new way of forming patterns .
John
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24th June 2007, 08:09 AM #4
Great idea Frank.
The british woodcarver Ian Norbury uses a similar technique where he
re sizes photos and pastes them onto the block,
your method would work particularly well with a symetrical figure,
(like those old art deco figures holding up lamps etc)
Another way would be to push a profile guage up against the
figurine then trace directly onto the timber,
any one else use profile guages ,or is it just me???
cheers underfoot
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24th June 2007, 01:01 PM #5GOLD MEMBER
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Thanks, Underfoot. I have used a profile gauge in the past (I think: you refer to those flat rows of metal wires that push in and out, isn't it?) for turning, but would not know where to start on a figure with multiple profiles. It seems to be a useful method. How do you ensure that the profiles you draw are actually orthogonal? Also, isn't it difficult to join a lot of short profiles when the work is much bigger than the length of the gauge? It would not work on fresh clay, though... Or are you talking of something I have absolutely no idea about?
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24th June 2007, 03:44 PM #6
Yep thats them,
there's gauges and there's gauges
carbatec used to sell a set of 5 that linked together to about
700mm , plastic body with adjustable resistance, so you can use it on clay and plasticene,
to get all four sides acurately just draw a line on four sides of the figure.
when I'm back in the shed I'll post a pic
cheers underfoot
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24th June 2007, 04:21 PM #7
i often take a photo of something from various angles trace the outlines in Photoshop, reize it to fit, print,and paste onto the wood. I also sketch and do the same. Its also a good way to do planning and try and work out whether a particular idea will work in a particular piece of wood.
Taking a sketch or photo into a 3d CAD program can be immmensely helpful if you have and can use one.
Iam itching to do a large detailed sculpture where its mostly drawn up already and i'll print it out tiled over many A4 sheets which i'll then lay out over the block.Art has now be-comeSim-ply an ex-cuse to sitIn the Sun . What Fun!BC-haiku
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25th June 2007, 01:00 AM #8
For complicated projects, I do most of my design in CAD. For the complex shapes, full-size printing is more accurate than massaging photos. Glue the print (spray adhesive) onto the material, and cut out the piece. Best to scribe the cut line first to provide a neater line, vs tearing the paper irregularly. Sometimes need to use some solvent to help remove the pattern afterwards, even though the gluing is supposed to be "temporary." Also, for metal cutting, cutting fluid may dissolve the glue, so scribing preserves the pattern after the paper print goes that-a-way.
JoeOf course truth is stranger than fiction.
Fiction has to make sense. - Mark Twain
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