It's just regular machine oil, there is some truth to that but a little heat
helps that oil too so if you're in a cooler environment, that oil will still
get harder.
----- Original Message -----
From: "Howard Kaufman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, October 17, 2008 3:48 AM
Subject: Re: the good old brailler
> What I was told, is that the oil inside the machines hardens and causes
> the
> sluggishness of older braille writers. The way to avoid the problem is to
> use them. That is the only way of keeping the oil in a lubricating
> condition. They should be used every three months at a minimum.