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Guest Ryan Murtha
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Guest Ryan Murtha

You might like this, the picture that got me started was Leonardo da Vinci's Bacchus, pointing with both hands - you only need two points to indicate a hexagon grid. Norwegian artist Odd Nerdrum confirmed analysis of two paintings. There are many, but I will attach a few good ones. 

 

In The Painter's Manual (1525) Dürer wrote:

Considering, however, that this is the true foundation for all painting, I have proposed myself to propound the elements for the use of all eager students of Art, and to instruct them how they may employ a system of Measurement with Rule and Compass, and thereby learn to recognize the real Truth, seeing it before their eyes.

Michelangelo thought Dürer's reliance on geometry excessive, and is reported by Vasari (The Lives of the Artists, 1550) to have said "It is necessary to keep one's compass in one's eyes and not in the hand, for the hands execute, but the eye judges."

 

“I began from the background, with the architecture. Once the lines were marked out, I called all my figures, one by one, and they came obediently to take their places in the perspective.” Ingres, quoted in Charles Blanc, Ingres, sa vie et ses ouvrages (1870)

 

When you want to draw on a wall, first level the surface and then attach pieces of wood to the legs of a pair of metal compasses, to make them as long as you want, and tie a brush to one end so that you can mark with color the proportions of the figure and describe their halos. When you have marked the proportions of the figure, take some ochre and draw first with a watery solution. - Dionysius of Fourna, Painter's Manual (1730-34)
 
With larger paintings, I wondered how it was done, and realized you would only need a piece of string and chalk; you would just mark the circumference, then chalk up the string and snap it on the canvas, probably on the floor, to get a grid.

Runge.jpg

ingres3.jpg

Pontormo.jpg

Salviati.jpg

Guercino.jpg

guido-reni.jpg

Durer 1.jpg

Vasari1.jpg

Manet1.jpg

Odd Nerdrum.jpg

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This is SO synchronistic words fail me. I just logged in to post this image and saw that Ryan had just posted the above and this is a forum topic that has largely been unvisited for months - at least by any of us who regularly post. What are the chances?
 

Anyway the above is fascinating and I was going to write to say I take it all back about deciding there was only a slim chance, due to the printing press procedure, that they were using sacred geometry on the cover and dedication of the sonnets: look at this.

It’s in a book I just purchased today. It should/must be credited to Wooden Books and the author Adam Tetlow.

Here is where you can purchase your own copy of Harmonic Geometry and others in their amazing series.

https://www.amazon.co.uk/s?k=wooden+books&crid=1HRISVPB10R4M&sprefix=wooden+books%2Caps%2C67&ref=nb_sb_ss_ts-doa-p_2_12

37E3C79F-35D0-47DE-9831-057FF853FBFC.jpeg.d9bf8d78d2dbb503f4ded34ea52e790d.jpeg
 

This method dates to the 1200s! 

Edited by Kate
Grammar
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Guest Ryan Murtha
14 hours ago, Kate said:

This is SO synchronistic words fail me. I just logged in to post this image and saw that Ryan had just posted the above and this is a forum topic that has largely been unvisited for months - at least by any of us who regularly post. What are the chances?

This method dates to the 1200s! 

The Villard Folio came up in my research-

The 13th-century folio of Villard de Honnecourt, an artist connected with cathedral builders in France, includes the following recipe:

Retain that which I will tell you. Take leaves of red cabbage, and of avens - this is an herb which one calls 'bastard cannabis.' Take a herb which one calls tansy and hemp - this is the seeds of cannabis. Crush these four herbs so that there is nothing more of the one than of the other. Afterwards you take madder two times more than any one of the four herbs, then you crush it, then you put these five herbs in a pot. And you put white wine to infuse it, the best that you are able to have, being somewhat with care that the potions not be too thick, and that one is able to drink them

 

image.png.c5f1816d06fb90c857254bdfd7233330.png

Villard Folio.pdf

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I finally got around to read it. Thanks for sharing, it is very interesting but I was slightly disappointed by the lack of  drawings, there is just reference to all but 4 of them. I went on a search and found this. It has all 33:

Facsimile of the sketch-book of Wilars de Honecort, an architect of the thirteenth century https://archive.org/details/facsimileofsketc00vill/mode/2up

 

172765929_Honnecourt2.png.21ec8844af8b4215e8bca196e74ae2ee.png

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