W stroke – variants and applications

We have seen how the past with W races constitutes one of the most effective methods for the approximation of the parabola starting from the spherical surface. Let us examine some variations of this technique to accentuate or diminish the effect of the processing in some areas of the surface. The W race presupposes a constant displacement and linear , orthogonal to the direction

Strokes “W”

La pass with races “W”  It is the main technique used in the process of parabolizzazione. Normally it runs with mirror above and below the tool, It can also be applied in some cases with inverted positions. The position of the hands is the one with the palm which rests and pushes from the edge to "hours 8:20"And your thumbs facing the center to

Analysis of strokes 1/3D c.o. c. (Everything you need to know who does not stop at the "come and go" of the glasses)

Past 1 / 3D c.o.c, alias the forward-backward centered race (or, all’americana: “center over center”), processing for abrasion, amplitude equal to one third of the mirror diameter, in which scratching of the glass is used to make a mirror (for example parabolic) is, with patience, UNIVERSAL WINNING WEAPON. Like the: The acquired new life

Stroke 1/3 COC

DESCRIPTION La pass with racing 1/3 center over center ( shortened: COC = “C. o. c.” ) is the classical stroke, the most widely used because it can be applied in all stages of processing both with the mirror above and below the tool, than vice versa. The position of the hands is the one with the palm that supports and pushes