they were made of mud bricks and mud mouldings
Gesso is a primer. Artists sometimes apply it to a surface before painting on it. In fact, gesso looks a lot like paint. Originally, gesso only came in white. Artists put it on canvas, wood, or other surfaces before creating a painting with oil paint or acrylics. Gesso makes the surface a little stiffer. It prevents paint from soaking into the support (canvas, paper, wood, etc.), and it gives the surface a little more texture (called "tooth"), so the paint sticks better. Please see related link.
That depends on...1) personal taste... Some folks like painted mouldings - then there is the whole, paint all mouldings one colour (white or off white) or paint the mouldings to match the colour of the room debate, others prefer natural/stained wood.2) decorating style... If the home uses a lot of wood (paneling, wainscoting, cabinetry, hardwood flooring, etc) you may want to use stained wood. If the house is painted or wallpapered you may want to paint your mouldings (see the above on the colour debate).3) the kind of mouldings you can afford/find. Composite materials, pre-primed, and inexpensive finger-joint woods should be painted. Real wood, such as clear pine, oak and mahogany (if you can find it) can be either stained or just sanded and top coated with a top quality poly.
Bullnose wood are mouldings, often used in flooring. It is used in hardwood flooring to trim the height and distance between the wood and the carpet/stairs.
To minimize pinholes start with a fine grained wood. Let the gesso cool and apply it when it becomes thick but not solid. Brush it out in alternating directions with decreasing pressure. Any pinholes that do appear can be filled by dampening the surface and rubbing gently with a fingertip, a cloth or very fine sandpaper. Keep on top of this as you build layers of gesso to avoid pinholes popping through from below.
Detroit Metal Mouldings ended in 1949.
Detroit Metal Mouldings was created in 1946.
Your answer depends on the wood -- some wood is heavier than other wood; whether the door is fashioned in some way with mouldings; whether or not the door is hollow or solid, and so forth.
Ernesto del Gesso has written: 'Pampas, araucanos y ranqueles'
Plastic mouldings are most frequently used in DIY tasks in the home. For example, plastic mouldings may be used in repairing furniture or fixtures and fittings.
You could make the desired texture with Gesso first and then paint over it.
Any primer is going to seal the surface which is all the gesso is doing.