Rosin Press

A rosin press is a hydraulic or pneumatic press with two heated, temperature-controlled plates and a pressure gauge. It was built for cannabis extraction, where flowers are squeezed between the plates at high pressure and moderate heat. The same three properties that make it good at that job make it interesting for card work:

The earlier position on this wiki was that rosin presses were "not recommended" because they generate far more force than a card needs. That is still true of the force available. It is no longer true that the tool is unusable. Rosin pressing with little to no heat has now been run on roughly 170 cards by the wiki moderator with cards passing grading, and this page…

Also on this page
  • Overview
  • How It Differs From a Heat Press
  • Warnings
  • Never press a damp card
  • Treat the pressure gauge as a starting point, not a specification
  • Texture is the thing you cannot get back
  • Heat multiplies every other risk
  • Operator safety
  • The Working Method
  • Principle
  • Materials
  • Steps
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This page is part of the Card Conservation Wiki member library — the working reference behind The Cardboard Alchemists. Technique pages with tested settings, the Card Sensitivity Database, logged incidents with the exact parameters that caused them, and community experiments you will not find written down anywhere else.
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