Deformation over time is a strong argument to go to something very stable like aluminum or something.<div><br></div><div>I guess plastercine is right out?</div><div><br><br><div class="gmail_quote">On Thu, Nov 4, 2010 at 2:51 PM, Mike Ayukawa <span dir="ltr">&lt;<a href="mailto:mike.ayukawa@gmail.com">mike.ayukawa@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">

  
    
  
  <div bgcolor="#ffffff" text="#000000">
    Hi,<br>
    More info on these types of mounts here:<br>
    <a href="http://en.wikipedia.org/wiki/Mirror_mount" target="_blank">http://en.wikipedia.org/wiki/Mirror_mount</a><br>
    and here:<br>
    <a href="http://www.siskiyou.com/images/ixm100.2_spec.jpg" target="_blank">http://www.siskiyou.com/images/ixm100.2_spec.jpg</a><br>
    <br>
    Having used this style of mounts on a laser setup at NRC, I&#39;m not so
    sure that making it out of plastic would be worthwhile.<br>
    It largely depends on how smoothly you want it to operate.  The
    plastic will deform under load in the area of the ball bearing<br>
    pivot over time.  I&#39;d actually think it would be easier just to make
    some up from some aluminum stock.  You don&#39;t have to<br>
    mess around with threaded inserts for the prototype.<br><font color="#888888">
    /Mike</font><div><div></div><div class="h5"><br>
    <br>
    <br>
    On 11/4/2010 1:23 PM, Paul &amp; Andrea Mumby wrote:
    <blockquote type="cite">
      
      Ok, so if I get the mechanics from those photos, their particular
      design has the flat square bracket (with the circular hole) which
      would be the plate which the mirror itself would be fixed against.
      This pivots on a ballbearing in the corner of the L shaped
      bracket, with 2 center springs under tension, which keeps the
      corner set screws under compression, allowing you to adjust the X
      and Y tilt, the L shaped bracket has 2 holes one in each &quot;arm&quot;
      which I&#39;m assuming are for mounting the whole apparatus to your
      machine...
      <div>
        <br>
      </div>
      <div>I&#39;m not sure how the mirror is affixed to the flat plate with
        the circular hole, they mention plastic tipped screws, but I
        don&#39;t see that anywhere in the pic, but I might be missing
        that... Either way if my above assumptions of the mechanics are
        correct, I should be able to mock up a design for this quite
        easily... </div>
      <div><br>
      </div>
      <div>If you have any other input to offer that might let me get
        something mocked up in time to show you tonight.</div>
      <div><br>
      </div>
      <div>I&#39;ll confirm with my wife when I get home from work if
        tonight is ok for a quick meeting, and if she&#39;s ok with that
        then I&#39;ll email you and confirm timing and such early this
        evening...</div>
      <div><br>
      </div>
      <div>Does that work for you?</div>
      <div><br>
      </div>
      <div>Thanks!</div>
      <div><br>
      </div>
      <div>- Paul</div>
      <div><br>
        <div>On Thu, Nov 4, 2010 at 12:44 PM, Darcy Whyte <span>&lt;<a href="mailto:darcy@siteware.com" target="_blank">darcy@siteware.com</a>&gt;</span>
          wrote:<br>
          <blockquote>
            <div>Did you follow the ebay link I sent?</div>
            <div><br>
            </div>
            <div>Okay, we can meet up tonight later if you want. Just
              send me the address at time to <a href="mailto:darcy@siteware.com" target="_blank">darcy@siteware.com</a>.
              I can probably come around 9 or just before 10 for a quick
              meeting.</div>
            <div>
              <div>
                <br>
                <br>
                <br>
                <div>On Thu, Nov 4, 2010 at 12:41 PM, Paul &amp; Andrea
                  Mumby <span>&lt;<a href="mailto:themumbys@gmail.com" target="_blank">themumbys@gmail.com</a>&gt;</span>
                  wrote:<br>
                  <blockquote>
                    I&#39;m in Bayshore... My house and workshop are a bit
                    of a disaster area lately though lol... I think my
                    wife would shoot me if I invited someone in right
                    now :)
                    <div><br>
                    </div>
                    <div>Either way, we could meet quickly to discuss
                      your options, if you have some hand sketches or
                      something of the parts, and bring along some
                      samples, and dimensions, I could mock something up
                      tonight/tomorrow, and we could discuss it more at
                      the faire... your right in that there might not be
                      a ton of time, but I was surprised how easily the
                      design/testing cycle works now that I have rapid
                      prototyping capability... Small parts take 20min
                      to print or less, so I can easily whip up a design
                      in an hour or less, print it, and take an
                      iterative design approach to something that is
                      normally much more monolithic... It wastes a bit
                      more material, but since material costs are so low
                      for the plastic filament, it&#39;s totally worth the
                      agility gained in the design process...</div>
                    <div><br>
                    </div>
                    <div>Let me know what your thoughts are and we can
                      talk about it. </div>
                    <div><br>
                    </div>
                    <div>I&#39;m a bit busy tonight and tomorrow, as I also
                      have some paperwork to catch up on for my home
                      business, and some other todo items to deal with
                      (I&#39;ve been multitasking between print and other
                      stuff) but I could probably afford an hour or so
                      either tonight or tomorrow between 8pm and 10pm to
                      discuss options. Otherwise we can talk at the
                      faire and meet up sometime following that if that
                      works better.</div>
                    <div><br>
                    </div>
                    <div>Even an email with some sketches/dimensions and
                      pics of parts and so on might let me mock up
                      something quickly if that&#39;s preferable as well.</div>
                    <div><br>
                    </div>
                    <div>Thanks!</div>
                    <div><br>
                    </div>
                    <div>
                      - Paul</div>
                    <div>
                      <div>
                        <div>
                          <div>
                            <div><br>
                              <div>On Thu, Nov 4, 2010 at 12:26 PM,
                                Darcy Whyte <span>&lt;<a href="mailto:darcy@siteware.com" target="_blank">darcy@siteware.com</a>&gt;</span>
                                wrote:<br>
                                <blockquote>
                                  <br>
                                  I would think that there wouldn&#39;t be
                                  much time to do it during the Maker
                                  Faire. The printing would be easy but
                                  the design (and any experiments) would
                                  take a while.
                                  <div><br>
                                  </div>
                                  <div>I think the plastic cost is
                                    cool. </div>
                                  <div><br>
                                  </div>
                                  <div>Where are you? If you want to try
                                    some test runs, I could drop by if
                                    you want.
                                    <div>
                                      <div><br>
                                        <br>
                                        <br>
                                        <div>On Thu, Nov 4, 2010 at
                                          12:18 PM, Paul &amp; Andrea
                                          Mumby <span>&lt;<a href="mailto:themumbys@gmail.com" target="_blank">themumbys@gmail.com</a>&gt;</span>
                                          wrote:<br>
                                          <blockquote>
                                            There will be several 3d
                                            printers at the maker faire,
                                            I would bet you could have
                                            mirror holders made at the
                                            maker faire with enough
                                            bartering/negotiating lol...
                                            1&quot; holding brackets wouldn&#39;t
                                            take long to print, it would
                                            mostly be design/testing
                                            time that would consume the
                                            most effort...
                                            <div>
                                              <br>
                                            </div>
                                            <div>I&#39;d be fine with
                                              printing them for you at
                                              maker faire for cost of
                                              plastic used (which would
                                              be minimal, hell I would
                                              likely do it for free
                                              depending on the volume of
                                              plastic). provided we have
                                              the time/resources to
                                              design the parts. I&#39;m sure
                                              a lot of the other guys
                                              will have more Industrial
                                              Design experience than I
                                              do though.</div>
                                            <div><br>
                                            </div>
                                            <div>Anyway, point being
                                              there will be at minimum 5
                                              3d printers, and possibly
                                              as many as 7-8 at the
                                              maker faire. So between
                                              all of them I&#39;m sure your
                                              parts could get done ;)</div>
                                            <div><br>
                                            </div>
                                            <div>Also there is talk
                                              about kickstarting the
                                              RepRap Loaner program at
                                              the ottawa Maker Faire, so
                                              we will be trying to build
                                              a reprap mendel at the
                                              faire, and use it as a
                                              community loaner model.</div>
                                            <div><br>
                                            </div>
                                            <div>I&#39;ve been working on
                                              printing parts to have at
                                              the maker fair in the
                                              evenings this week (just
                                              for examples) so if you
                                              have a design in mind, or
                                              some info, perhaps I could
                                              run a few off as tests
                                              tonight or tomorrow, and
                                              bring them along, get a
                                              bit of a head start.</div>
                                            <div><br>
                                            </div>
                                            <div>Let me know.</div>
                                            <div><br>
                                            </div>
                                            <div>- Paul</div>
                                            <div><br>
                                              <div>
                                                <div>
                                                  <div>On Thu, Nov 4,
                                                    2010 at 11:55 AM,
                                                    Darcy Whyte <span>&lt;<a href="mailto:darcy@siteware.com" target="_blank">darcy@siteware.com</a>&gt;</span>
                                                    wrote:<br>
                                                  </div>
                                                </div>
                                                <blockquote>
                                                  <div>
                                                    <div>
                                                      <div><br>
                                                      </div>
                                                      <div>I&#39;m now
                                                        wanting to make
                                                        mirror holders.
                                                        The mirrors are
                                                        1&quot;. I need two
                                                        of them. They
                                                        should have a
                                                        tilt adjust.</div>
                                                      <div><br>
                                                      </div>
                                                      <div>Any ideas?</div>
                                                      <div><br>
                                                      </div>
                                                      <div>The artengine
                                                        makerbot? What
                                                        is the status of
                                                        that? What is
                                                        the procedure
                                                        for booking it?</div>
                                                      <div><br>
                                                      </div>
                                                      <div>I&#39;d like to
                                                        try and have
                                                        them done before
                                                        Guy and I are
                                                        finished making
                                                        the mounting
                                                        brackets for the
                                                        laser tube.</div>
                                                      <div><br>
                                                      </div>
                                                      Here are some
                                                      mirror holders on
                                                      ebay:<br>
                                                      <div><a href="http://cgi.ebay.com/2-Thorlabs-1-Optic-Mounts-Holder-Laser-Mirror-Lens-/160361359773?pt=LH_DefaultDomain_0&amp;hash=item255648299d#ht_1115wt_869" target="_blank">http://cgi.ebay.com/2-Thorlabs-1-Optic-Mounts-Holder-Laser-Mirror-Lens-/160361359773?pt=LH_DefaultDomain_0&amp;hash=item255648299d#ht_1115wt_869</a></div>


                                                      <div><br>
                                                      </div>
                                                      <div><br>
                                                      </div>
                                                      <br>
                                                    </div>
                                                  </div>
_______________________________________________<br>
                                                  Lab mailing list<br>
                                                  <a href="mailto:Lab@artengine.ca" target="_blank">Lab@artengine.ca</a><br>
                                                  <a href="http://artengine.ca/mailman/listinfo/lab" target="_blank">http://artengine.ca/mailman/listinfo/lab</a><br>
                                                  <br>
                                                </blockquote>
                                              </div>
                                              <br>
                                            </div>
                                          </blockquote>
                                        </div>
                                        <br>
                                      </div>
                                    </div>
                                  </div>
                                </blockquote>
                              </div>
                              <br>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                  </blockquote>
                </div>
                <br>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
      </div>
      <pre><fieldset></fieldset>
_______________________________________________
Lab mailing list
<a href="mailto:Lab@artengine.ca" target="_blank">Lab@artengine.ca</a>
<a href="http://artengine.ca/mailman/listinfo/lab" target="_blank">http://artengine.ca/mailman/listinfo/lab</a>
</pre>
    </blockquote>
    <br>
  </div></div></div>

<br>_______________________________________________<br>
Lab mailing list<br>
<a href="mailto:Lab@artengine.ca">Lab@artengine.ca</a><br>
<a href="http://artengine.ca/mailman/listinfo/lab" target="_blank">http://artengine.ca/mailman/listinfo/lab</a><br>
<br></blockquote></div><br></div>