On 12/22/2011 3:59 PM, Ed Pawlowski wrote:
On Thu, 22 Dec 2011 13:47:30 -0800 (PST), wrote:

What is BLO?

boiled linseed oil, which is non-toxic when fully polymerized

Do they boil the oil, or do they boil the linseed seeds?

Neither, actually. It is a term used when they add driers and/or
other chemicals.

linseed oil is edible. it's the driers that make it inedible.

from wikipedia:

Boiled linseed oil

Boiled linseed oil is used as a paint binder or as a wood finish on its
own. Heating the oil causes it to polymerize and oxidize, making it
thicker and shortening its drying time. Today, most products labeled as
"boiled linseed oil" are a combination of raw linseed oil,
petroleum-based solvent, and metallic dryers (catalysts to accelerate
drying). The use of metallic dryers makes boiled linseed oil inedible.
Some products contain only heat-treated linseed oil, without exposure to
oxygen. Heat-treated linseed oil is thicker and dries very slowly. This
grade of linseed oil is usually labeled as "polymerized" or "stand" oil,
though some types may still be labeled as "boiled".