On Sat, Mar 25, 2006 at 02:17:08AM -0500, Peter Todd wrote:
> On Thu, Mar 23, 2006 at 12:11:54AM +0200, Peter wrote:
> > > Are there any thing about this glass that are different than normal
> > > glass? Especially weak?
> > 
> > 'weak' and 'low melting temperature' are not necessarily related. At 
> > normal temperature they are as hard as ... glass. But you can take a 
> > 1N4148 and hold it into the gas flame of a lighter for a couple of 
> > seconds and see the glass melt.
> 
> Thanks for the info, and my new party trick. :)

Hmm... Looks like the keyword here is "solder glass frit" According to
http://www.techneglas.com/products/solder.htm you can solder glass
together at 450C using this stuff, rather like soldering electronics
parts, heck, the temperatures aren't even that much higher. Other
manufactures offer the stuff with working temperatures as low as 325C,
pretty close to reflow soldering if I'm not mistaken.

It looks annoying to work with, for instance it's best if the part is
assembled with the frit, and then everything is heated to reduce thermal
stresses, but that's what modded toaster ovens are for...

On other interesting notes... Turns out there is such thing as a
"nanogetter", same idea as the getter in a vacuum tube, but for MEM
devices!

-- 
pete@petertodd.ca http://www.petertodd.ca
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