Re: [DIYbio] Re-analyzing 3d bio printing

On Fri, May 24, 2013 at 3:55 PM, William Heath <wgheath@gmail.com> wrote:

> I would give my kingdom to be part of this amazing revolution! I think the
> major barrier to entry with 3d bio printing right now is that stupid printer
> nozel. Can't we just have a simple piezo electric kind of cartridge that
> doesn't require an inkjet shield for an arduino? Are there any other
> solutions for causing cells to eject out of some kind of encasement at a
> precise rate then using these massively complex printer cartridges that are
> not designed for this singular purpose? If not how hard is it to create
> one? As I understand it the pezo electric cartridge works like this:

> Is it hard to do this:
>
> 1. Use a reprap printer to print a kind of cartridge casing
> 2. Putting some piezo electric material in it
> 3. Hooking up some kind of chip that applies a current to this piezo
> electric material to cause a droplet to come out
>
> We have the reprap so once we get an easy to use printer nozel/dispensor we
> can really begin to do 3d bio printing much easier.

I'll let the bioPrinter group folks weigh in more on this, but an
econonmies-of-scale printer cartridge can be had in my neighborhood in
about 10-15 minutes during the day, and within about 25 minutes
24-hours-a-day. I can't say the same about a reprap/other 3D printer,
even factoring in round trip time, I might be able to beat the printer
finishing the job with the premade inkjet cartridge.

Maybe some standardization, like how cell phones are all USB now,
could shift the inkjet head industry to be a physically separate unit
from the ink storage tank. That way you can just buy the appropriate
head, and without getting ink everywhere taking it apart, you just
hook up your sterile cell tank.

Otherwise, I've seen piezo hack in some STM and SPM projects I believe.
http://www.geocities.com/spm_stm/disk_scanner.html

Some attempts at DIY piezo dispensers
http://hackteria.org/wiki/index.php/DIY_Micro_Dispensing_and_Bio_Printing#Micro-Dispensing
http://reprap.org/wiki/Scratchbuilt_Piezo_Printhead

Somewhat more apparently successful:
http://www.andaquartergetsyoucoffee.com/wp/?p=220
(which say get more details here)
http://forums.reprap.org/read.php?153,52959



--
-Nathan

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