Yes, bank ink packs, also known as dye packs, are real and used as a security measure by banks to deter theft. These devices are designed to look like a stack of currency and are kept in a teller's drawer. When a robbery occurs, the pack is covertly placed with the stolen money. Once the robber leaves the bank, a radio-controlled mechanism triggers the pack to explode, releasing an indelible dye that marks the money and the thief with bright, permanent color. This not only spoils the stolen cash, making it easy to identify and difficult to spend, but it also helps law enforcement in identifying and apprehending the suspect. The use of dye packs has been a part of bank security measures since the 1960s and continues to be an effective deterrent against bank robberies.

Mixing oil pigment with epoxy resin requires precision for optimal results. First, choose a high-quality, dry oil pigment and a clear, two-part epoxy resin. Start by mixing the pigment with a small amount of epoxy hardener in a separate container, stirring until you achieve a consistent color without clumps. This step ensures the pigment is fully dispersed. Next, combine this mixture with the remaining epoxy resin according to the product's mixing ratio, typically 1:1. Mix thoroughly for at least 3 minutes to ensure the pigment is uniformly distributed throughout the resin. It's crucial to work in a well-ventilated space and use protective gear like gloves and a mask. Test your mix on a small scale first to ensure compatibility and satisfaction with the color intensity. Adjust pigment proportion as needed, but be cautious not to add too much, which can affect the resin’s curing process. Once satisfied, the colored epoxy can be poured into molds or used for coating surfaces.

The potential health impacts of resin exposure depend largely on the type of resin, duration, and manner of exposure. Epoxy resins, commonly used in coatings, adhesives, and art projects, can cause skin irritation, allergic reactions, and respiratory issues if improperly handled. Inhalation of fumes can lead to asthma-like symptoms and long-term respiratory problems. Proper ventilation, using protective gear like gloves and masks, and adhering to safety guidelines minimize risks. However, once fully cured, most resins are considered safe and non-toxic. It's crucial to follow manufacturer instructions and safety data sheets for specific resin products to protect your health.