Leo Martínez
When restoring a painting, a panel strainer is an auxiliary support with fixed corners, usually made of wood, that holds the canvas under tension, reducing movement and allowing the artist to paint on a flat surface. The process of restoring a painting on a panel strainer involves removing the painting from the original strainer and transferring it to a new auxiliary support, typically a stretcher. The original strainer is retained and attached as a collar to a rigid or semi-rigid panel, such as cardboard, commercial hardboard, aluminium sheet, or epoxy-infused fibreglass. The choice of strainer or stretcher can provide valuable information about the artist's technique, the painting's history, and the artist's financial state or location at the time of creation. The strainer or stretcher is an important consideration in the restoration process, with factors such as reusability, structural modification, and historical integrity playing a role in the decision-making process.
Explore related products
What You'll Learn
The importance of panel strainers
Firstly, strainers offer valuable insights into the history of a painting. By examining the design, materials, and construction techniques of a strainer, art conservators can often determine the origin, time period, and restoration history of a painting. This information is invaluable for understanding the artist's techniques, the painting's provenance, and its place in art history.
Secondly, strainers play a vital role in the conservation and preservation of panel paintings. Paintings, particularly those on canvas, require auxiliary support to reduce the movement of the textile. Strainers provide this support, holding the canvas taut and preventing sagging. This not only ensures the structural integrity of the painting but also minimizes the risk of paint flaking and other forms of deterioration.
Additionally, strainers are essential in preventing damage to the painting. Over time, environmental fluctuations, such as changes in temperature and humidity, can cause the canvas to loosen on the strainer. By transferring the painting to a new strainer or stretcher, conservators can ensure the canvas remains taut and secure, preventing the formation of stretcher bar marks and other types of damage.
The choice of strainer material is also significant. While wood was traditionally used, modern strainers can be made from a variety of materials, including metal, plastic, or a combination thereof. The selection of the material depends on factors such as durability, affordability, and ease of workability, always keeping in mind the best interest of the artwork.
Furthermore, strainers can be reused or modified to properly support a painting. Conservators may opt to retain original or unique strainers, making structural modifications to ensure the painting's historical integrity is maintained. This careful consideration of strainers ensures the longevity and preservation of artistic works.
In conclusion, panel strainers are of utmost importance in the restoration and conservation of paintings. They provide structural support, prevent damage, and offer valuable historical context. By understanding the significance of strainers, art conservators can make informed decisions to ensure the longevity and preservation of cherished artworks for future generations to appreciate and enjoy.
Creating Transparent Backgrounds in Paint: A Step-by-Step Guide
You may want to see also
Explore related products
Panel strainer construction materials
A panel strainer is an auxiliary support with fixed corners, often made of wood, metal, or plastic. When restoring a painting, a panel strainer is used to support the painting and prevent it from sagging or deteriorating.
When constructing a panel strainer, it is important to consider the following factors: lightweight, durability, dimensional stability, affordability, availability, and ease of workability. Here are some common materials used for panel strainers:
- Wood: Wood is a traditional material for stretchers and strainers, but it can deteriorate over time. Some common types of wood used include softwood, mahogany-faced plywood, hard pine, redwood, and basswood.
- Metal: Metal can be used for the cross-members of the strainer, such as aluminum tubing. It is strong and durable but may be more expensive and less easy to work with.
- Plastic: Plastic is a lightweight and durable alternative to wood and metal. It is also less prone to deterioration.
- Cardboard: Cardboard can be used as a support for the painting, but it is not as sturdy as other materials and may need to be reinforced.
- Masonite: Masonite is a type of hardboard that was commonly used in the mid-20th century, but it has largely been replaced by more stable materials.
- Aluminum Honeycomb Panels: These panels are strong, lightweight, and stable, making them a popular choice for conservation practices.
- G-10™ Sheets: G-10™ sheets are epoxy-infused fiberglass sheets that provide a rigid support for paintings. They are commonly used in conservation treatments.
When constructing a panel strainer, it is important to consider the size and weight of the painting, as well as the availability and cost of the materials. Additionally, the historical integrity of the painting may play a role in the choice of materials, with some conservators opting to use age- or artist-appropriate materials.
Creating Transparent Images with 3D Paint
You may want to see also
Explore related products
Panel strainers vs stretchers
When restoring a painting, a panel strainer refers to an auxiliary support with fixed corners, usually made of wood, that is used to reinforce a frame. Over time, the canvas on a strainer can loosen and need to be re-stretched, or the strainer itself may deteriorate. This is where a panel stretcher comes in.
Panel Strainers vs. Stretchers
Both strainers and stretchers are types of auxiliary support used in painting restoration. A strainer is a rigid frame with fixed corners, typically made of wood, that provides support and reinforcement for the painting. On the other hand, a stretcher is a type of auxiliary support with expandable corners, allowing for the adjustment of tension. Stretchers are often made of wood, plastics, metal, or a combination of these materials, and they have a sloped face and/or a bump on the outer edge to keep the canvas away from the bar.
One key difference between strainers and stretchers is their adjustability. Strainers, due to their fixed corners, cannot be expanded, which can lead to slackening of the canvas over time. In contrast, stretchers have expandable corners that allow for tension adjustment. This adjustability makes stretchers more suitable for large-scale canvas paintings, as they can provide adequate tension to prevent sagging.
The choice between using a strainer or a stretcher depends on various factors. Strainers are simpler to manufacture and are often used when the canvas has already been stretched. Stretchers, on the other hand, require more advanced woodworking skills but offer the advantage of adjustability. Additionally, the artist's choice of auxiliary support can convey information about their financial state, working practices, and other aspects of the painting's provenance.
When restoring a painting, it is important to carefully examine and document the original stretcher or strainer. These auxiliary supports can provide valuable insights into the artist's techniques, the painting's history, and any previous restoration attempts. Conservators may opt to retain significant or unique stretchers and strainers when possible to preserve the historical integrity of the artwork.
The Weeping Art: Exploring Emotional Inspiration
You may want to see also
Explore related products
Panel strainer conservation techniques
A panel strainer is an auxiliary support with fixed corners, often made of wood, that is used to mount a painting. Over time, the canvas may slacken on a strainer, leading to deterioration and the need for conservation.
Examination and Documentation
Before beginning any conservation treatment, it is essential to thoroughly examine the panel strainer. This can provide valuable information about the artist's techniques, previous conservation treatments, and the painting's history. For instance, the type of wood and the method of construction can offer clues about the painting's origin and date. If the panel strainer has any inscriptions, signatures, or unusual information, these should be carefully documented and considered during the treatment process.
Structural Treatment
If the panel strainer is damaged or deteriorated, the conservator must decide whether to repair or replace it. If the strainer contains important historical information, it may be retained and attached as a collar when the painting is lined onto a new rigid or semi-rigid panel. This technique, known as "lining onto a replacement support", involves removing the painting from the original strainer and transferring it to a new auxiliary support, typically a stretcher. The original strainer can be attached to the new support to preserve its historical data.
Material Choice
When choosing a replacement stretcher or strainer, the conservator should consider the material's lightweight, durability, dimensional stability, affordability, and ease of workability. Today, heavy-duty custom-built stretchers and strainers are available in various materials, including wood, plastics, and metal. The choice of material and construction should be made with the best interest of the artwork in mind, sometimes opting for age- or artist-appropriate materials.
Surface Treatment
To prevent sap migration and ensure the longevity of the new stretcher, it is common to apply a surface coating. This can include materials such as dilute shellac, Paraloid™ B-72, commercial varnish, or wax coating.
Preventative Conservation
To minimise future conservation interventions, it is essential to consider the environmental conditions in which the painting is stored or displayed. Fluctuations in temperature and relative humidity can cause the canvas to slacken on the strainer, leading to deterioration. By maintaining stable environmental conditions, the lifespan of the panel strainer can be extended.
Easy Deck Repairs: Painting on a Budget
You may want to see also
Explore related products
Panel strainer historical insights
A panel strainer is an auxiliary support with fixed corners, often made of wood, metal, or plastic. The corners are fixed using hardware like nails, screws, dowels, or splines, or with adhesives. Over time, the canvas on a strainer may slacken due to environmental fluctuations and deterioration of the textile fibres. This results in the need for a new auxiliary support, usually a stretcher.
The use of panel strainers dates back to the 17th and 18th centuries, with evidence of early strainer use found in a "trompe-l'oeil" by Cornelis Gysbrechts (Copenhagen), dating from c. 1660 with dowel-joined corners. The practice of attaching the canvas to the stretcher prior to painting also dates to the 18th century. "Keys"—small wooden wedges inserted into the interior corners of the stretchers for expansion purposes—were introduced during this period.
The examination of original stretchers or strainers can provide valuable insights into the technique of the artist, the history of the painting, and whether it has undergone previous conservation or restoration treatments. For example, the choice of secondary support may convey information about the artist's financial state, the presence of studio assistants, and their location at the time of creation.
In the 1950s through the 1970s in the United States, it was common to line a painting onto Masonite® with wax or a wax/resin adhesive. A stretcher was often attached to the reverse to act as a collar and prevent flexing, as well as to retain the original stretcher or strainer.
Today, heavy-duty, custom-built stretchers and strainers are available, constructed from various materials such as wood, plastics, metal, or a combination of these, with considerations for lightweight, durable, and dimensionally stable structures relative to the painting.
Renaissance Revolution: Ideal City Painting Impact
You may want to see also
Frequently asked questions
A strainer is an auxiliary support with fixed corners, usually made of wood, over which a painting canvas is stretched.
A panel strainer is used to reinforce the panel at the edges and to provide a place to attach the tacking margins.
Panel strainers are rigid and provide support to the painting, allowing hanging devices to be attached without damaging the painting.
Panel strainers cannot be expanded, which can result in the canvas support slackening due to environmental fluctuations and deterioration of the textile fibres.
