[Lab] Laser cutter precision

[Michael Ayukawa]

Something like this may work:
http://www.laserbits.com/images/LaserResources/TechTipsandFeatureStories/TECHTIP_PDFs/TECHTIP_LaserFoil.pdf

polyester laminate called Laser Foil

May work well enough as a mask/stencil for etching.  Depends a lot on the interface properties w.r.t. the etchant.
/Mike

On 2011-10-13, at 4:29 PM, bentfork at gmail.com wrote:

> I've tried making stencils and I haven't had any luck, yet.  The
> problem is finding a suitable material from which to make stencils.
> 
> Commercial ones are made of stainless steel... that isn't going to be
> cut by the laser we have.
> 
> 
> On 13 October 2011 16:06, Darcy Whyte <darcy at siteware.com> wrote:
>> It's trial and error. The machine is pretty accurate.
>> I'd just be concerned if the material (which I dont' know what it is) gives
>> of gas that's bad for humans or bad for the machine.
>> Send the material description technical at artengine.ca to see if Britta
>> already has that material on the green list or not.
>> 
>> On Thu, Oct 13, 2011 at 2:18 PM, Jean-Marc LeBlanc
>> <jeanmarc.leblanc at gmail.com> wrote:
>>> 
>>> hey,
>>> I was wondering if the lab laser cutter was good enough to make a
>>> stencil for bga/LGA chips.
>>> the pads at the botom are 0.4 millimeteres I think
>>> 
>>> Jean-Marc Le Blanc
>>> ---
>>> 
>>> "Do you pine for the nice days of Minix-1.1, when men were men and
>>> wrote their own device drivers?" Linus Torvalds
>>> 
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>> 
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