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Reply by hObOmOnk

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Posted on Little Help Please! Tung Oil, Grind Angles, and Polyurethane, Oh My!

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hObOmOnk

1381 posts in 2818 days


#1 posted 12-03-2010 01:34 PM

Shellac is good stuff. It is very safe to use, it is far more durable than “internet echoers” claim and it is easy to fix and maintain.

Common shellac myths, aka “Internet Wisdom” (repeated until believed by the masses):

1. All shellac is edible because shellac is used in food products and medicines.
Truth is that “food-grade” shellac and “medical-grade” shellac are highly purified and approved for their intended purposes. The stuff in the can from the hardware store is not guaranteed to be consumable, although it is generally safe for casual contact. Take a look at the raw shellac flakes that many artisans use to mix their own finishes. It can be quite nasty.

2. Denatured alcohol is completely safe because it evaporates and leaves no residue. While methanol and similar evaporative chemicals are used to denature alcohol in the USA, this is not true in other countries. Non-food approved residues may result.

Analogy: Some water is drinkable therefore all water is drinkable.
Truth is that less than 1% of the Earth’s water supply is drinkable as is.

-- 温故知新


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