[Lab] Laser cutter precision

[Jean-Marc LeBlanc]

I was thinking of using polyimide sheet but I can't find any one that
sells it at a reasonable price

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




On Thu, Oct 13, 2011 at 4:40 PM, Michael Ayukawa <mike.ayukawa at gmail.com> wrote:
> 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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