Roller is a concept that has its etymological origin in the Latin word rotella . The dictionary of the Royal Spanish Academy ( RAE ) attributes several meanings to the term.
A roller is usually an instrument that has a cylinder capable of rolling . In this way, when the cylinder rolls, it allows something to be flattened, crushed or squeezed.
Rolling pin in agriculture and cooking
In agriculture , the roller is a machine that has a very heavy cylinder . As the machine advances, the cylinder rolls over the surface, smoothing and compacting the soil .
The kitchen rolling pin , also known in some countries as a rolling pin or rolling pin , is a wooden cylinder that is taken by its tips and rolled over a dough that is intended to be rolled out. The usual thing is that, after forming the dough, it is placed on the counter and flattened with the rolling pin. In this way the dough can be used to make pasta, cakes or other dishes.
The term in sport
In the same way, we cannot ignore the fact that the term that concerns us now is also used within the world of sports . It usually refers to a training roller , which is a device that is placed on bicycles so that you can practice cycling without leaving home and at a fixed point, as if it were a stationary bike. It is a way to be able to do sports comfortably, because you do not have time to go to the gym or simply because it is raining and going out on the road with said two-wheeled vehicle is a real danger.
Of course, choosing a roller of this type is not an easy task since there are several models that exist in this regard. Specifically, these are the most requested and significant:
- The magnetic ones, which offer resistance to pedaling because they have a fan and a roller of magnets. They have the advantage that their price is very affordable, but the disadvantage is that they are unrealistic and very noisy.
- The direct drive ones, which have become the ones used by professional cyclists to prepare before a time trial. They are realistic, silent and do not include any type of regulation. All this without overlooking the fact that they are the most expensive.
- The fluids , which are very natural, do not have a regulation handle and have a fluid that establishes the resistance. In favor is that they are quieter and against that they are expensive.
paint roller
Another type of roller is the paint roller . This tool has a handle and a sponge roller or other similar material at its end, which rotates on an axis.
The subject who uses it must impregnate the sponge with paint and then move the roller over the surface to be painted, making the sponge roll. Paint rollers not only allow you to paint walls or ceilings comfortably and quickly, but they also usually offer an even result, which lacks the typical marks that brushes generally leave.