No. How well a suction cup sticks to a surface has to do with how will a seal can be formed on the surface. Rough surfaces will not form good seals compared to smooth surfaces which means that suction cups will not stick as well to rough surfaces as they do to smooth surfaces.
No, a suction cup works by forcing air out of the space between it and the surface it's on. No air = no suction.
When you stick a suction cup on a window you force the air out of the suction cup and you create a high pressure vaccume keeping the suction cup on the window.
J.W Greene
The standard wet dry vaccum will actually retain its suction for a long time. They are also easy to clean out. They only require to be taken apart, and dumped out.
No. How well a suction cup sticks to a surface has to do with how will a seal can be formed on the surface. Rough surfaces will not form good seals compared to smooth surfaces which means that suction cups will not stick as well to rough surfaces as they do to smooth surfaces.
Cut a potato, rub the juice on the suction cup. This really does work. I don't know why.
No, a suction cup works by forcing air out of the space between it and the surface it's on. No air = no suction.
It is the rubber that makes a tight seal and creates the suction. If it is wet, it gives it even a better seal for suction. In office and household settings, they are commonly used to affix objects (ranging from signs to mugs) to nonporous vertical surfaces such as refrigerator doors and tiled walls.
When you stick a suction cup on a window you force the air out of the suction cup and you create a high pressure vaccume keeping the suction cup on the window.
because you are pushing air out of the space between the window and the suction cup
mounting cup
I wouldn't want my last suction cup to slip, just as I reach the top of the window. The geckos have a very clever suction cup design of the soles of their feet.
The suction cup will lose its attachment, unless it has an additional adhesive. Suction cups attached to a surface are held there by the pressure of the outside air, which is higher than the pressure under the cup. The suction cup is trying to return to its uncompressed condition, and pulls away from the surface, reducing the pressure under it.
Because rough surfaces prevent the edges of the suction cup from creating a seal, which a suction cup needs to function.
J.W Greene
if its just a small suction cup try some meths or kerosine and or dishwashing liquid or cooking oil!