PonokoCornerAssembly < Main

Main.PonokoCornerAssemblyr1.11 - 02 Jan 2009 - 22:54 - RussNelsontopic end
---+ Making the Ponoko RepRap Lower Corner Assemblies
<table>
<tr><td></td><td>[[http://reprap.org/bin/view/Main/PonokoRepRap][Main Ponoko Page]]</td></tr>

<tr><td>[[PonokoRepRapXMotorAssembly][Prev Step]]</td><td></td><td>[[PonokoZMotorAssembly][Next Step]]</td></tr>
<tr><td>[[PonokoBOM#PonokoCornerAssembly][BOM for this page]]</td></tr>
</table>

<img src="%ATTACHURLPATH%/dsc04257.jpg" alt="Corner bracket with lasercut bearing race installed"  width="480" height="360" align="right" />
The easiest approach to assembling the main RepRap frame is to assemble the Lower Corner Assemblies and Z Motor Assembly first, and then slide them on the the bars. We'll start with the three Lower Corner Assemblies.

<BR CLEAR="ALL">

<img src="%ATTACHURLPATH%/dsc04405.jpg" alt="Set of parts for Ponoko corner bracket"  width="480" height="360" align="right" />
Start by finding the components and fastenings as shown. As well as the lasercut parts you will need for each Corner:

   * 8 off M3 25mm machine screws
   * 8 off M3 nuts
   * 16 off M3 washers
either:
   * 8 off 4.5mm (0.177") ball bearings
   * 1 off M8 washer, 
or:
   * 1 off 608 ZZ Ball bearing race.

The 608 ZZ bearing can be used instead of the washer and lasercut bearing race, should 4.5mm (.177") BBs be banned by a Nanny State near you.

<BR CLEAR="ALL">
<repeat count="3">

<img src="%ATTACHURLPATH%/dsc04400.jpg" alt="First 4 screws inserted into lower corner"  width="480" height="360" align="right" />
Put the <part p="four M3">washer</part>s on <part>four M3 25mm screw</part>s, and insert them through the 3mm lasercut part, the matching 5mm part, and the squared-off 5mm part as shown. Put <part p="four M3">washer</part>s and <part p="four M3">nut</part>s on but do not do them up all the way:

<BR CLEAR="ALL">

<img src="%ATTACHURLPATH%/dsc04401.jpg" alt="Attaching 8mm part to Lower Corner Assembly"  width="480" height="360" align="right" />
Put <part p="four M3">washer</part>s on the remaining 4 <part p="four M3 25mm">screw</part>s, and use them to attach the 8mm lasercut part from the other side. Long-nosed pliers are handy for manipulating the <part p="four M3">washer</part>s and <part p="four M3">nut</part>s on the inside face.

<BR CLEAR="ALL">

<img src="%ATTACHURLPATH%/dsc04402.jpg" alt="Washer into Lower Corner Assembly."  width="480" height="360" align="right" />
Put a large <part a="ifthrust">M8 washer</part> into the hole in the assembly.

<BR CLEAR="ALL">

<img src="%ATTACHURLPATH%/dsc04424.jpg" alt="Single Corner Assembly with redux top"  width="480" height="360" align="right" />
Pop the circular lasercut race on top of it and put the <part p="8" a="ifthrust">4.5mm BBs</part> into the eight holes.

Note that there are two variations in the cutting patterns. The larger one is in fact quicker to cut and is slightly stronger.

Alternatively, put in a <part a="ifskate">608Z skate bearing</part> race, wrapping with tape if necessary to form a snug fit.

It is helpful to pop a <part p="M8" a="ifthrust">washer</part> and M8 bolt on top to stop the BBs falling out.

<BR CLEAR="ALL">

<img src="%ATTACHURLPATH%/dsc04425.jpg" alt="Three Corner Assemblies showing mirror-image parts."  width="480" height="360" align="right" />
Make two more assemblies just like this, but a *mirror image* of the first one. You should end up with a set of components looking like this:

<BR CLEAR="ALL">

There are in fact four Lower Corner Assemblies, but the last one is a bit different because it has a motor attached.
</repeat>

<table>
<tr><td></td><td>[[http://reprap.org/bin/view/Main/PonokoRepRap][Main Ponoko Page]]</td></tr>

<tr><td>[[PonokoRepRapXMotorAssembly][Prev Step]]</td><td></td><td>[[PonokoZMotorAssembly][Next Step]]</td></tr>
</table>
-- Main.VikOlliver - 15 Nov 2008
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