Re: [DIYbio] microfluidic chips to order

In the US it's a thousandth of an inch. 7 mil is 0.18 mm

https://en.wikipedia.org/wiki/Thousandth_of_an_inch

On 15 February 2014 07:16, Cathal Garvey <cathalgarvey@cathalgarvey.me> wrote:

What's 7mil mean? I saw "mil" and thought "millimeters" but of course
that's not right, 7mm is very wide!

On 15/02/14 01:50, Sebastian Cocioba wrote:
> I was actually speaking with an EE friend about just such a concept.
> The smallest trace can go to about 7mil but it would be about 1-2mil
> tall. He said using solder reflow could round off the channels. I made
> a few shrinkydink chips with some success as long as the channel width
> wasn't too small and only one layer. Dakota, if you want just send me a
> hand drawn sketch and I'll make one for you in PDMS and pop it in the
> mail for free. I have a ton of PDMS and shrinky paper so I don't mind.
> I use DraftSight from dassault systems but AutoCAD is best for super
> high res chips. Shoot me a pic of the chip u want. What's the worst
> that can happen? :P
>
> Sebastian S. Cocioba
> CEO & Founder
> New York Botanics, LLC
> Plant Biotech R&D From: Cathal Garvey
> Sent: 2/14/2014 5:30 PM
> To: diybio@googlegroups.com
> Subject: Re: [DIYbio] microfluidic chips to order
> No idea, I just recall seeing it discussed! :)
> Looking at this handy adafruit ruler though, trace sizes can get pretty
> small.. looks like 0.2mm on this ruler, and I expect they go lower with
> some companies.
>
> On 14/02/14 22:04, Avery louie wrote:
>> What trace size? Hit me up with the deets, I might know something.
>>
>> --A
>> On Feb 14, 2014 4:38 PM, "Cathal Garvey" <cathalgarvey@cathalgarvey.me>
>> wrote:
>>
>>> I've heard of people using circuitboard traces as a cast?
>>>
>>> On 14/02/14 21:27, Dakota Hamill wrote:
>>>> Anyone know of any websites that would make a few chips to order, or give
>>>> you a master mould?  Sort of like 3D printing to order, but for
>>>> microfluidics.
>>>>
>>>>
>>> http://www.fluigent.com/wp-content/uploads/2013/06/microfluidic-chip-micronit.jpg
>>>>
>>>> I'm looking for something exactly like that, except I want 3 channel
>>> inputs
>>>> at the top, not two, then the long pathway, with one exit.
>>>>
>>>> I'm pretty bad at using Sketchup so I've been trying to find design files
>>>> someone else already made.
>>>>
>>>> Thanks
>>>>
>>>
>>> --
>>> Please help support my crowdfunding campaign, IndieBB: Currently at
>>> 23.1% of funding goal, with 27 days left:
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>>> P: +3538763663185
>>> W: http://indiebiotech.com
>>>
>>
>

--
Please help support my crowdfunding campaign, IndieBB: Currently at

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