Actually after closer examination the pens have 2 little air holes
in the nib (just where it joins to the main case).
I will have to add this.
Thx for pointing it out.

Dave

"Mike Williams" <mik### [at] nospamplease> wrote in message
news:bGN### [at] econymdemoncouk...
> Wasn't it Davey B who wrote:
> >"Mike Williams" <mik### [at] nospamplease> wrote in message
> >news:NPo4+DAc### [at] econymdemoncouk...
> >> Wasn't it Davey B who wrote:
> >> >
> >> >Here is mark 2 of the picture I have been playing with.
> >> >Added some caustics, focal blur and an area light.
> >> >
> >> >Comments please.
> >>
> >> Why isn't there a tiny cylindrical hole about two thirds of the way
> >> along?
> >>
> >Simple answer, the actual pens I used for reference did not have them.
> >
> >:)
>
> Since there also isn't a hole in the base plug (such as what some recent
> pens use) I'd guess that the reference pens don't work too well. As the
> ink gets used up, the air pressure inside the pen decreases and resists
> the flow of more ink.
>
> --
> Mike Williams
> Gentleman of Leisure

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