Austin Osman Spare published The Book of Pleasure (Self-Love): The Psychology of Ecstasy in 1913, laying out the alphabet of desire: compress a written wish into a glyph, charge it in a state of vacuity or exhaustion, then forget it so the belief can operate without conscious interference. The method was revived and codified for a new generation by Peter J. Carroll in Liber Null (1978) and Liber Null & Psychonaut (1987), which is where the remove-the-vowels recipe most people practice was popularized.
Online sigil culture often treats letter deletion as the magic itself, a graphic-design ritual divorced from Spare's actual engine, which was the deliberate forgetting. Spare insisted the sigil must be banished from memory; a framed sigil on the wall is, by his own logic, inert decoration.
Underneath the recipe sits Spare's metaphysics: Kia, the formless self, acts when the conscious I is absent, and the neither-neither principle suspends both belief and disbelief. The sigil is a smuggling device, an intention slipped past the border guards of the personality.
If the technique works by hiding a wish from your own awareness, what else is your awareness refusing to see?