How To Make Hibachi Scallops

Aging with crayons Carbothello

One of the most known and probably used in the model to simulate leakage of various kinds (mostly rust) is what provides the use of oil paints.
On a base finished with gloss clear apply, with a very fine brush, a tiny point of paint undiluted subsequently "pulls" the color with a dry brush or lightly moistened with thinner until reaching the desired result and then you seal the color with a second hand lens (this time opaque).

This technique has advantages (above all, the glossy finish allows easy adjustments during the process) but the drawback of requiring long processing times (at least one or two days of waiting for the complete drying of the base and two to three for the oil) and a good dose of manual skills and experience of the modeller to achieve good results.

Recently, a plastimodellista Italian, Pierfrancesco Grizi - "aeroplanaro" very active on some Italian forum - has introduced a new technique to create sagging, dirtying and nuances of color that involves the use of pastels produced by Carbothello Stabilo.
Carbothello I have pencils whose soul is made of a material midway between charcoal and lead pencil. They are available in stores materials for fine arts and are available in 60 shades , including many lands and many gray (hot and cold).
The huge advantage that these pastels allow the model - especially for those who work with very small scales such as model trains in N, or 1 / 72 in plastimodellismo - is the extreme precision and ease of use of the instrument and determination of the product.
To make a casting, in fact, just make a section on the model surface, with a light hand, then with a stiff brush, dry it go the distance (with dry-brush-like motion) vanishing at will. Colors can be easily stacked together.
process, prealtro is totally reversible if the job does not suit, the section can be completely removed with a Q-tips moistened with plain water.
The only care is to apply the pastel on a strictly opaque.
the purpose of constructing buildings ATSF-Route 66 and the aging of carts and place, I wanted to try this technique using as a model caburanti deposit that I made recently for a module shudders. The idea is to apply rust dripping on the walls of the tanks.

For the test I've got (relatively easily) with a dozen pastel shades of brown and gray.

and a swab for decoupage stetole with short and stiff (can also go to a traditional brush must be cut in the terminal resistor side of the bristles)

To reproduce the effect of casting, I applied a first base of Light Ochre (code 685) over a large area

then blend with the swab

to which I have superimposed a second fine line of Burnt Umber (code 625) but also shaded with a lighter hand

The small dark spots (Bister made with cod. 635) simulating the rusty spots giving rise to the leakage.

A variant of the technique involves the use of a brush (not mutilated) moistened with water to brush up on suddenly with a gesture similar to what you do because it "pulls" the oil.