Re: gloy for tricolor on yupo?

I wonder if the last sentence of the first paragraph of the following might
just as well apply to the second paragraph.

Terry

In a message dated 31/3/06 7:06:15 am, kthayer@pacifier.com writes:
Katherine

Is it possible that your last s

> Well, of course, all of this goes without saying:  for each 
> combination of light, dichromate, film, paper,  etc etc there is a 
> "best" exposure,  which  can easily be determined with a step wedge, 
> and which produces the optimal hardening of the gum layer;  anything 
> less than that exposure will result in less than optimal gum 
> hardeningI would be very surprised if there are any gum printers 
> who don't know that.
>
> But my point,  which I wonder if you've missed,   was that this 
> "best" exposure is different for every system of equipment, 
> materials, etc.  It's hardly surprising that your students found that 
> the same exposure worked for them, given that  I would assume that 
> they would be using the same equipment and materials, but surely 
> you're not suggesting that 6 minutes is an optimal exposure in some 
> kind of general and absolute sense.
>
>
Received on Fri Mar 31 01:23:19 2006