Box of 3 bi-color pencils

Gérald Ubassy:

To precisely adjust the shape of the teeth, it is important to sketch their contours and transition points with a pen.

While a color is used to underline the transition angles and convexias in the work model, the opposite color is used to sketch the outer contour of the teeth.

Wherever the blue is overlaid with the red, this means that the transition angle is correctly positioned when the blue is moved, indicating that a correction is required.

In this way, we gain a considerable amount of time and our work is much more accurate. This method is very effective.

Another quality of this pen is its complete calcination.