plate no. 8359

Head of St. Andrew

chalk, paperHigh Renaissancereligious paintingfigureportraitreligious figurebeardprofile

recreation guide

This recreation guide focuses on Leonardo da Vinci’s 'Head of St. Andrew,' a work executed in chalk on paper. As a High Renaissance drawing, it exemplifies Leonardo’s mastery of tonal gradation and anatomical precision without the use of color. The artwork is distinctive for its reliance on the artist’s documented technique of 'sfumato'—a subtle shadowing that creates a smoky, indistinct boundary between forms, lending a lifelike quality to the subject (Source 4). Unlike his oil paintings, this piece utilizes dry media, specifically chalk, which requires a different approach to layering and blending to achieve the desired softness and depth.

estimated time

10-15 hours over 3-4 sessions

materials

5 items

steps

4 in sequence

materials

item	purpose	modern equivalent
White chalk (conté or similar)	To create highlights and mid-tones on the paper.	White Conté à Paris or high-quality white drawing chalk.
Black chalk (or red chalk for underdrawing)	To establish shadows, contours, and depth.	Black Conté à Paris or vine charcoal for initial loose sketches.
Toothed paper	To hold the dry pigment mechanically, as chalk relies on surface texture rather than adhesive mediums.	Heavyweight drawing paper with a visible grain (e.g., Ingres or Strathmore Bristol with texture).
Blending stump or tortillon	To soften edges and create the 'sfumato' effect by smudging the chalk particles.	Paper blending stumps.
Kneaded eraser	To lift chalk for subtle highlights and correct lines without damaging the paper tooth.	Standard kneaded eraser.

preparation

surface prep

The support must have a rough natural surface or be prepared with a layer of pumice stone to ensure the chalk adheres mechanically, as dry media contain little to no medium and rely on the paper's tooth for retention (Source 3). Leonardo’s drawings often utilized paper with a slight texture to facilitate the layering of chalk.

underdrawing

Leonardo’s preparatory methods are not explicitly detailed for this specific work in the provided sources, but his general practice involved a deep understanding of anatomy and light. The underdrawing should be light and flexible, allowing for the 'subtle gradation of tone' characteristic of his work (Source 6). Avoid hard, definitive outlines initially, as Leonardo’s style favors the dissolution of lines into shadow.

underpainting

Not applicable for a chalk drawing. However, the concept of building up layers of tone is analogous to underpainting. The artist should begin with the lightest tones and gradually build up darkness, mimicking the way light falls on the form.

color palette

White

White chalk

Highlights and mid-tones, leveraging the white of the paper as the base.

Black/Dark Gray

Black chalk

Shadows, contours, and deep recesses. Leonardo’s use of 'subtle gradation of tone' suggests a wide range of grays rather than stark black (Source 6).

composition

While specific compositional details of 'Head of St. Andrew' are not described in the sources, Leonardo’s general compositional habits include setting figures at oblique angles to create dynamism and depth (Source 4). The focus should be on the head and shoulders, with attention to the 'elusive' quality of expression, similar to the 'subtly shadowed corners of the mouth and eyes' noted in the Mona Lisa (Source 4).

step by step

underdrawing→first pass→refining→finishing

underdrawing

step 01
Lightly sketch the basic proportions of the head and shoulders using a soft black chalk or vine charcoal. Focus on the oblique angle of the head, consistent with Leonardo’s compositional tendencies (Source 4).
Tip — Keep lines light and erasable. Do not commit to hard outlines.
Proportional sketching

first pass

step 02
Begin applying white chalk to the areas that will receive the most light. Use the tooth of the paper to hold the pigment. Build up mid-tones gradually.
Tip — Ensure the paper has sufficient tooth to hold the chalk (Source 3).
Dry media layering

refining

step 03
Introduce black chalk to define shadows and contours. Apply the chalk in layers, blending with a stump to create soft transitions. Aim for the 'sfumato' effect, where boundaries between light and dark are indistinct (Source 4).
Tip — Avoid harsh lines. The goal is to mimic the 'smoky' quality of Leonardo’s work (Source 4).
Sfumato

finishing

step 04
Refine the facial features, paying particular attention to the eyes and mouth. Use a kneaded eraser to lift chalk for subtle highlights, enhancing the 'lively' quality of the expression (Source 4).
Tip — Be gentle with the eraser to preserve the paper’s tooth.
Highlighting with erasure

critical techniques

Sfumato

A technique of softening outlines and blending tones to create a smoky, atmospheric effect. Leonardo used this to give his subjects a lifelike, elusive quality (Source 4).

Mechanical Adhesion of Chalk

Chalk is applied in a powdered state and held on the support by mechanical means, requiring a rough surface or prepared ground (Source 3).

common pitfalls

→Creating hard, defined outlines instead of soft, blended transitions. Leonardo’s style is characterized by the absence of distinct lines (Source 4).
→Overworking the paper, which can destroy the tooth and prevent further chalk adhesion (Source 3).
→Using too much pressure, which can flatten the texture and reduce the ability to layer tones.

what the sources don't tell us

Where the corpus is silent, we say so rather than guess. These are the gaps a complete recreation guide would normally cover that our source passages don't.

·Specific details of the facial expression or iconography of St. Andrew in this particular drawing are not described in the sources.
·The exact type of paper Leonardo used for this specific work is not specified, though general practices are inferred.
·The specific ratio of white to black chalk used is not documented.

grounded in

The technical procedure in this guide traces to the following classical art-instruction texts.

The Science of Painting — CHAPTER XII↗
- CRAYONS, DISTEMPERING, EGG-PAINTING, WATER — applied to Explanation of how chalk adheres to paper mechanically.

cross-referenced from

Named facts about this artwork and artist were checked against these reference pages.

Wikipedia bio — Leonardo da Vinci — part 16↗
- N/A — applied to Description of sfumato and the elusive quality of expression.
- N/A — applied to Compositional habits, such as oblique angles.
Wikipedia bio — Leonardo da Vinci — part 11↗
- N/A — applied to General qualities of Leonardo’s work, including subtle gradation of tone.