Blueprint Signature Paper For Free

Blueprints use the cyanotype process invented by the astronomer John Herschel in 1842. The paper is coated with a solution of two soluble iron(III) salts. The two iron salts do not react with each other in the dark, but when they are exposed to ultraviolet light the iron(III) ammonium citrate becomes an iron(II) salt.

Vellums are used to make high quality copies of blueprints. The vellum we carry is made from 100% cotton. It is an excellent choice for presentation quality work and archiving.

Vellums are used to make high quality copies of blueprints. The vellum we carry is made from 100% cotton. It is an excellent choice for presentation quality work and archiving.

Learning how to make a blueprint starts with knowing what you need for basic tools:Drafting pencils and erasers.An architect's scale.Rulers, measuring triangles, protractors, and other drawing and measuring aids.Drafting paper.Blueprint paper for the final printing.More items...

In a very dim room or in the dark: pour the potassium ferricyanide and iron(III) ammonium citrate solutions together into a petri dish. Stir the solution to mix it. Use tongs to drag a sheet of paper across the top of the mixture or else paint the solution onto the paper using a paintbrush.

After only a few minutes of exposure, you are left with a perfect copy. The reaction from the sun causes a compound to appear on the paper called blue ferric ferrocyanide, or Prussian Blue. This is the blue color left behind on the treated paper and why these copied documents came to be known as blueprints.

What is Vellum Paper? First off, let's cut out any confusion: This article refers to modern, plant-based vellum, a paper that goes by many names. Besides vellum, it may be referred to as tracing paper, see-through paper, transparent paper and translucent paper.