Homebrew PCBs

Search for tempil  <http://www.tempil.com/> are the folks who make temperature-sensitive paper and plastic markers.

Donald.
----- "Jim Barnes" <jim@...> wrote:

> Hi,
> 
>  
> 
> Long ago (20-plus years), when I worked in aerospace, we had little
> paper strips that we attached inside a unit to find out how hot it
> got
> during test. As I recall, they had dots which permanently changed
> color
> at different temperatures. Google couldn't find them but maybe I
> didn't
> ask it the right question. Has anyone else heard of these? Are they
> still made? It seems they would be perfect for measuring roller
> temperature. 
> 
>  
> 
> Jim
> 
>  
> 
> From: Homebrew_PCBs@yahoogroups.com
> [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of DJ Delorie
> Sent: Thursday, February 11, 2010 7:45 AM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] Re: laminator heat specs
> 
>  
> 
>   
> 
> 
> Try opening it up and looking at the part numbers. The roller temp
> isn't always the same temp as the cutoff unless you can measure it
> *between* the rollers.
> 
>