
plate no. 2836
Fra Angelico, 1445
recreation guide
Fra Angelico’s 'Crucifixion with St. Dominic' (1445) is a quintessential example of Early Renaissance religious fresco painting. The work is characterized by the artist’s signature use of clear, bright pastel colors and a focus on piety and humility, rather than the lavish gold and blue trappings often associated with Gothic altarpieces (Source 6). While Angelico combined late Gothic decorative conventions with emerging Renaissance principles of solidity and naturalism (Source 7), this specific wall painting relies on the durability and immediacy of the buon fresco technique. The artwork reflects the Dominican Rule’s focus on charity, with a composition that likely avoids distracting decorations to emphasize the spiritual narrative (Source 7).
estimated time
40-60 hours over 5-7 days (due to the strict time constraints of wet plaster application)
materials
6 items
steps
5 in sequence
materials
| item | purpose | modern equivalent |
|---|---|---|
| Hydrated lime (slaked lime) | Primary binder for the plaster and pigment in buon fresco | Hydrated lime putty or lime plaster mix |
| Fine sand | Aggregate for the intonaco (final plaster layer) to ensure smoothness | Silica sand, finely sifted |
| Coarse sand | Aggregate for the arriccio (undercoat) to provide a rough, adherent base | Construction-grade sand |
| Alkaline-resistant pigments | Colors that will not degrade in the high-pH environment of wet lime | Earth pigments (ochres, umbers), ultramarine (if budget allows), vermilion (with caution) |
| Water | Medium for grinding pigments and mixing plaster | Distilled water |
| Short-haired brushes | Applying pigment to wet plaster without sticking | Stiff bristle brushes or natural hair brushes with short bristles |
preparation
surface prep
The wall must first be entirely covered with a rough, thick undercoat of plaster known as the arriccio, made of lime and coarse sand, applied about an inch thick (Source 1, Source 3). This layer creates a rough surface called rough-casting (Source 1). Once dry, assistants typically copy the master painter's composition onto this layer using reddish-brown pigment or charcoal (Source 3).
underdrawing
The composition is transferred to the dry arriccio undercoat using reddish-brown pigment or charcoal (Source 3). The artist makes necessary adjustments at this stage before the final plaster is applied. Fra Angelico’s practice involved careful arrangement of figures, suggesting precise underdrawing to ensure the 'sweetness and gentleness' characteristic of his saints (Source 6).
underpainting
In true buon fresco, there is no separate underpainting layer in the oil or tempera sense. The pigment is applied directly to the wet plaster. However, the artist may use lime as a binding medium for pigment to slow the drying process of the plaster, allowing for longer working periods (Source 3).
color palette
Pastel tones
Diluted earth pigments and alkali-resistant minerals
General use in this artist's palette; Fra Angelico is known for clear, bright pastel colors in his unadorned fresco technique (Source 6)
Vermilion
Mercury sulfide
Likely used for robes or accents, consistent with his use in altarpieces like the Coronation of the Virgin (Source 7)
Azurite/Ultramarine
Copper carbonate or Lapis lazuli
Likely used for sky or Virgin’s robes, consistent with his use in prestigious works (Source 7)
composition
Fra Angelico characteristically arranged a few significant figures with skillful use of expression, motion, and gesture (Source 6). In his San Marco frescoes, he demonstrated an understanding of linear perspective, particularly in architectural settings (Source 7). The composition likely avoids excessive decorative elements to focus on the spiritual narrative, consistent with the Dominican Rule (Source 7).
step by step
underdrawing
step 01
Transfer the design onto the dry arriccio undercoat using charcoal or reddish-brown pigment.
Tip — Ensure the composition is adjusted and finalized before proceeding, as changes are difficult later.
Sinopia or cartoon transfer
first pass
step 02
Apply a thin layer of wet, fresh lime mortar (intonaco) over only the section to be painted that day (giornata).
Tip — Only prepare as much plaster as can be painted in one day. The plaster must be wet but sufficiently set to bear the pressure of a finger without sinking (Source 1, Source 3).
Buon fresco / Giornata
step 03
Grind alkaline-resistant pigments in water and apply them to the wet plaster using short-haired brushes.
Tip — Do not use long-haired brushes as they stick in the lime (Source 1). The colors penetrate the mortar, becoming part of the wall (Source 1, Source 3).
Buon fresco application
refining
step 04
Work quickly to complete the section before the plaster dries. If a mistake is made, it cannot be retouched.
Tip — Retouching is not possible in true fresco. Any spoiled parts must be demolished down to the rough-casting and recommenced the next day (Source 1).
Buon fresco limitation
finishing
step 05
Allow the plaster to carbonatate, fixing the pigment particles in a protective crystalline mesh.
Tip — This chemical reaction ensures the durability of the painting (Source 3).
Carbonatation
critical techniques
Buon Fresco
Painting with pigment ground in water on wet plaster. The pigment becomes part of the wall through carbonatation, ensuring durability (Source 3).
Giornata
Dividing the painting into sections that can be completed in a single day, dictated by the drying time of the plaster (Source 3).
Alkaline-Resistant Pigments
Using only pigments that can withstand the high pH of wet lime, such as earth tones and certain minerals (Source 3).
common pitfalls
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.
grounded in
The technical procedure in this guide traces to the following classical art-instruction texts.
The Science of Painting↗
cross-referenced from
Named facts about this artwork and artist were checked against these reference pages.
Wikipedia: Buon fresco↗
Wikipedia bio — Fra Angelico↗
Read more about the corpus on the sources page and how the guides are built on the methods page.
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