In article 8E9Bf.131911$km.90128@edtnps89,
"Darrell Feltmate" wrote:

I am not sure of the reacion types of other oils, but why take
chances? Dispose of them wisely.

If the oil hardens as it cures then it is subject to spontaneous
combustion. Boiled Linseed and Tung oils are the most common of the
hazardous wadded-up rags - along with alkyd paints and varnishes which
usually use one or both of these oils in the formula.

Oils derived from petroleum and animals don't cure and thus don't
self-combust but are fire hazards in proximity to heat and flames.

To be safe you should do one or more of the following:

1) Not use any product containing a hardening oil.
2) Spread the rag out flat on a non-combustible surface until stiff.
3) Drop the rag into a metal container with a tight fitting lid.
4) Submerge the rag into a container full of water.
5) Place the rag into a fireplace or woodstove and burn it intentionally.

Worst thing to do is place it on, under or near other combustible
materials.

--
Owen Lowe

Northwest Woodturners
Pacific Northwest Woodturning Guild
___
Tips fer Turnin': Place a sign, easily seen as you switch on your lathe, warning you to remove any and all rings from your fingers. Called degloving, extended hardware can grab your ring and rip it off your finger. A pic for the strong of stomach: www.itim.nsw.gov.au/go/objectid/2A3AC703-1321-1C29-70B067DC88E16BFC/index.cfm

Besides, rings can easily mar the surface of a turning as you check for finished smoothness.