Talk:Prusa Mendel

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Revision as of 11:06, 18 November 2010 by TheOtherRob (talk | contribs) (more Prusa instrcutions)
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BOM

Is the BOM primarily documented here or on github? We should not double document this and have the documentations inveitably fall out of synch. Either the git BOM should be deleted and replaced by a link to the wiki or vise versa, but having both can only lead to confusion IMHO. --TheOtherRob 16:13, 28 October 2010 (UTC)

The BOM is primarily documented here, until completed. Then it will move to the git. The picture was re-inserted to provide a link to the bigger version, this is not possible with the side-block, or do you know the way?. --Sikko 29 October 2010

Good point, I made the image clickable for all developments now.. not really sure why I didn't do that in the first place but it's fixed now. If the BOM is here can a placeholder be put in the github text linking to this location. That way people don't get confused by an out of date BOM at github. --TheOtherRob 18:09, 1 November 2010 (UTC)

Assembly Pictures Needed

Ok, I am working on a Prusa with a friend at my lab and we plan to photo document the process unless someone else has already done this (?)

PS. if you have done this already lets use this space to build the assembly documentation without messing up the main page (I'll post it back over once it's more final).

Here's my working notes for the assembly process so far:

Assembling the frame

Assembling the frame vertex triangles (2x)

This is the side of the Prusa RepRap, you will need to make 2 of these and then connect them together (see next step) to form the Prusa frame.

Parts Required (per triangle)

  • 2 footed frame vertices
  • 1 frame vertex (non-footed)
  • 1 bottom bar holder thingy (TODO: proper name)
  • 3 threaded rods (TODO: length)

(I have a pic of the assembled vertices)

Now we need to connect the 2 frame triangles to form the Prusa RepRap frame.

Assembling the top threaded rods

These connect the 2 frame triangles at their tops as well as providing mounts for the z-axis motors.

Parts Required

  • 2 assembled frame vertex triangles (see previous step)
  • 2 z motor mounts
  • 2 threaded rods (TODO: length)

Instructions

  1. attach the tops of each frame triangle (that is the non-footed vertex) to the threaded rod using a nut on each side of each hole to loosely keep them in place (we will adjust the position of these later).
  2. take the z motor mounts and attach them to the outsides of each non-footed frame vertex using a nut on each outer hole.

Assembling the front threaded rods

These 2 threaded rods are used to connect the front/bottom vertex of each triangle as well as the y-stage bars and y motor mount to the frame.

Parts Required

  • 2 assembled frame vertex triangles
  • 2 universal rod clamps
  • 1 y motor mount

Assembling the rear threaded rods

These 2 threaded rods are used to connect the back/bottom vertex of the 2 triangles together as well as the y-stage bars and belt pulley.

Parts Required

  • 2 assembled frame vertex triangles
  • 2 universal rod clamps
  • 1 y motor mount

Instructions

  1. Loosely attach the pulley to the center of the rod using 2 pairs of nuts and washers to keep it in place.
  2. Loosely attach the 2 universal rod clamps to either end of the rod using 4 nuts. Do not attach these using the 'U' clamping area, instead use the holes on either side of the 'U'. We will need the clamping 'U' later on to attach the y-stage bars.
  3. Loosely attach the rod to the upper hole in the 2 front frame vertices and attach the unused rod to the lower hole.

Tightening the frame

Now that the frame is fully assembled we can adjust and tighten each of it's threaded rods.

Instructions

  1. Adjust each of the threaded rods according to the diagram bellow and then secure them in place by tightening their nuts with a wrench until they are strongly attached (but not so tight that you see the plastic deform).

(TODO: Diagram)

Assembling the z stage

Parts Required

  • 2 shaft couplers
  • 2 PLA bushings
  • 2 stepper motors
  • 2 threaded rods (TODO: size)
  • 2 smooth rods (TODO: size)
  • 1 prusa frame (see previous step)

Instructions

Assembling the y stage

Parts Required

  • 4 PLA bushings
  • 1 belt clamp
  • 2 smooth rods (TODO: size)
  • 1 y timing belt
  • 1 stepper motor

Instructions

Assembling the x stage

Parts Required

  • 4 PLA bushings
  • 2 smooth rods (TODO: size)
  • 1 x timing belt

..I will be updating this as I build the Prusa and get pics off my friends phone.

--TheOtherRob 18:19, 1 November 2010 (UTC)