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Designs were cut into the inside walls of all mold parts. Some molds impressed a pattern on the object and base, while others omitted the base. Most molds were in three parts, but could also be constructed of two or four parts. Regardless of the number of parts of a mold, all objects produced in a mold are called three-mold glass. [11]
The component-making process involves building up a component on the fiberglass mold. The mold is a negative image of the component to be made, so the fiberglass will be applied inside the mold, rather than around it. As in the mold-making process, release agent is first applied to the mold. Colored gelcoat is then applied.
A building's surface detailing, inside and outside, often includes decorative moulding, and these often contain ogee-shaped profiles—consisting (from low to high) of a concave arc flowing into a convex arc, with vertical ends; if the lower curve is convex and higher one concave, this is known as a Roman ogee, although frequently the terms are used interchangeably and for a variety of other ...
The melted batch, or metal, is typically shaped into the glass product (other than plate and window glass) by either glassblowing or pressing it into a mold. [7] Glass was not pressed in the United States until the 1820s. [8] Until the 20th century, window glass production involved blowing a cylinder and flattening it. [9]
Egg-and-dart: egg shapes alternating with V-shapes; one of the most widely used classical mouldings. [4] Also: egg and tongue, egg and anchor, egg and star; Fillet: Small, flat band separating two surfaces, or between the flutes of a column. Fillet is also used on handrail applications when the handrail is "plowed" to accept square shaped ...
If you’ve ever indulged in the habit of cloudspotting, you’ve probably seen all kinds of things in the sky, from animals and faces to UFOs and cartoon characters. But did you know that our ...
Lancet windows may occur singly, or paired under a single moulding, or grouped in an odd number with the tallest window at the centre. The lancet window first appeared in the early French Gothic period (c. 1140–1200), and later in the English period of Gothic architecture (1200–1275). So common was the lancet window feature that this era is ...
Many early closed cars, such as the 1933 Pontiac Economy Eight had front and rear vent windows called "ventiplanes" and were installed on all GM products that year. It has hinges and a latch, so it can be opened for additional ventilation. 1933 was the first year all GM vehicles were installed with optional vent windows which were initially called "No Draft Individually Controlled Ventilation ...