Re: Microfluidics Chat Thread WAS: [DIYbio] Paper request

On Mon, Jan 5, 2015 at 12:28 PM, <scocioba@gmail.com> wrote:
> That's a good question. Let me breakdown the situation for you:
>
> I'm using a brother laser printer (toner) to print a 2D circuit design onto
> shrinkable polystyrene sheets (shrinkydinks). The shrink rate is about 63%.
> I'm still not sure what size channels I need so id like to learn a program
> so I can make the circuits with the least headache. Being able to scale
> everything would be super since I can test macro-chips and then scale down.
> Does parameterization involve scripting and hard coding relationships
> between shapes or is ita trivial task? Thanks again for the offer. I'll try
> out freeCAD and bother you for tips when I inevitably get stuck. Can freeCAD
> handle 2D well? Hatching and whatnot?

If you're talking about this:
https://en.wikipedia.org/wiki/Hatching

I don't see why you would want that. It seems for your case, you would
want greyscaling, which would be a feature of your 3D slicing
operation most likely.


> Also if I export a PDF to scale of a
> micron-ranged drawing, what's the smallest figure that can be drawn? I know
> PDF is vectorized but when I export in draftsight it thickens and blurs the
> lines at such small size. Pardon the noobery, I don't dabble much in CAD of
> any kind until recent. Thanks again!
>
>
> Sebastian S. Cocioba
> CEO & Founder
> New York Botanics, LLC
> Plant Biotech R&D
> ________________________________
> From: John Griessen
> Sent: ‎1/‎5/‎2015 3:17 PM
> To: diybio@googlegroups.com
> Subject: Re: Microfluidics Chat Thread WAS: [DIYbio] Paper request
>
> On 01/04/2015 06:23 PM, scocioba@gmail.com wrote:
>> Anyone have a favorite tool and is willing to post a tutorial on how to
>> use it for making microfluidic circuits?
>
> Not exactly, but FreeCAD is likely up to it. Would be happy to do a test
> draw in parallel with you
> to help you learn it.
>
> Are you wanting to create a parametric drawing such that when scaled, the
> widths of
> curved paths stay constant cross-section? Bend radii stay absolute?
> What do you want when scaling?
>
> John
>
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--
-Nathan

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