Robert Oster Thunderstorm is a versatile blue-black ink renowned for its dusky, smoky grey-blue to navy tones with medium-high shading and subtle maroon or green sheen in swabs. It offers medium flow, quick drying, and reliable performance on fountain pen-friendly papers, making it ideal for daily writing and sketching. This well-behaved ink suits professionals seeking a subtle yet complex workhorse and artists appreciating its layered pigmentation.
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Reviews & Resources
Robert Oster Thunderstorm Ink Review - The Pen Addict
This blue-black ink is subtle enough for work yet complex with smoky grey-blue shading and a matte finish, offering good lubrication, quick drying, and no feathering on quality paper.
Robert Oster Thunderstorm: Ink Review - The Goulet Pen Company
Robert Oster Thunderstorm provides a sleek writing experience with high saturation, medium-high shading from grey to deep blue, medium flow, but long dry time and low water resistance.
Ink Review #326: Robert Oster Thunderstorm
This blue-black ink features great shading, average 30-second dry time, low water resistance, and maroon sheen in large swabs, praised as a new favorite with no feathering on fountain pen papers.
Inky Thots: Robert Oster Thunderstorm | D.Katie Powell Art
Robert Oster Thunderstorm is a juicy, well-behaved sketching ink with no feathering, quick evaporation, and easy water movement, ideal for ink-painting and performing well on various papers.
EFNIR: Robert Oster Thunderstorm - Ink Reviews
This ink offers pretty chroma, good dry time, slinky writing, and appears as the blackest blue-black encountered, making it highly tempting.
Ink details on this page were generated with the assistance of AI and may not be fully accurate.