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<div class="moz-cite-prefix">Hi Edgar,<br>
<br>
On 1/29/2014 6:09 AM, <a class="moz-txt-link-abbreviated" href="mailto:edgar.escobar.nieto@ipt.fraunhofer.de">edgar.escobar.nieto@ipt.fraunhofer.de</a> wrote:<br>
</div>
<blockquote
cite="mid:OF76D404B0.44009DE8-ONC1257C6F.003EDB8F-C1257C6F.0042CB93@ipt.rwth-aachen.de"
type="cite"><font face="sans-serif" size="2">*The redesign of the
sample arm of the
4D Stage so that a timing belt and timing pulleys can be used
instead</font>
<br>
<font face="sans-serif" size="2">of the round belt and pulleys
included
with the 4D Stage. This was done because a slip between the belt</font>
<br>
<font face="sans-serif" size="2">and pulleys was identified
causing inaccuracies
when rotating the sample. I don't know if someone else had this
issue,
</font>
<br>
</blockquote>
I haven't noticed any trouble with belt slippage, but it's good to
know this may be a problem (and moreover that there is an excellent
solution available.)<br>
<br>
<blockquote
cite="mid:OF76D404B0.44009DE8-ONC1257C6F.003EDB8F-C1257C6F.0042CB93@ipt.rwth-aachen.de"
type="cite"><font face="sans-serif" size="2">*The redesign of the
sample chamber
so that the temperature of the medium can be controlled. For
doing that
a </font>
<br>
<font face="sans-serif" size="2">PT100 special for liquids, TO220
resistors
and a PID controller were employed. The sample chamber had to</font>
<br>
<font face="sans-serif" size="2">be built out of stainless steel
so that
corrosive effects due to the sample medium can be avoided.</font>
<br>
</blockquote>
This is great stuff. Do you know off-hand if these devices are
stable over time? i.e. four hours, eight, twenty-four? I suspect
good temperature control may improve time-lapse recording
somewhat...<br>
<br>
<blockquote
cite="mid:OF76D404B0.44009DE8-ONC1257C6F.003EDB8F-C1257C6F.0042CB93@ipt.rwth-aachen.de"
type="cite"><font face="sans-serif" size="2">I can provide you the
drawings and the
CAD files, also the part number and manufacturer of the
components that</font>
<br>
<font face="sans-serif" size="2">were used, just let me organize
the information accordingly.</font>
<br>
<br>
<font face="sans-serif" size="2">I think that would make sense to
make
this information available through the OpenSPIM wiki so that
eveyone can
use it if interested. </font>
<br>
<font face="sans-serif" size="2">At the same time I could have a
feedback
about the changes I made and further improvements can be done to
the design.
What is </font>
<br>
<font face="sans-serif" size="2">the opinion of all?</font></blockquote>
By all means! That's what the wiki is there for, after all.<br>
<br>
Thanks for sharing!<br>
Luke<br>
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