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# Push the epoxy-wetted parts together and attach the corner pieces to the heated build platform assuring that the platform is sandwiched between washers and nuts. Finger-tighten the nuts.
# Push the epoxy-wetted parts together and attach the corner pieces to the heated build platform assuring that the platform is sandwiched between washers and nuts. Finger-tighten the nuts.
# Insert a y-axis guide rod into the LM8UU bearings on one of the assembled sides to align the carbon fiber rod and corner pieces. Once the rod and corners are aligned and centered, tighten the nuts such that the corner pieces are firmly affixed to the platform. Repeat with the opposite side keeping mindful of the fact that the epoxy begins to set in five minutes.
# Insert a y-axis guide rod into the LM8UU bearings on one of the assembled sides to align the carbon fiber rod and corner pieces. Once the rod and corners are aligned and centered, tighten the nuts such that the corner pieces are firmly affixed to the platform. Repeat with the opposite side keeping mindful of the fact that the epoxy begins to set in five minutes.
# Let the epoxy set for 20 minutes while with the thermistor, bend the leads so that the thermistor sits like a tripod with the bead acting as one leg. Spend the remainder of the time [HS_RepRap_x_axis#Assembly_-_Step-by-Step prepping X-axis plastic parts].
# Let the epoxy set for 20 minutes while with the thermistor, bend the leads so that the thermistor sits like a tripod with the bead acting as one leg. Spend the remainder of the time [[HS_RepRap_x_axis#Assembly_-_Step-by-Step prepping X-axis plastic parts]].
# After the epoxy has set for 20 minutes, loosen the nuts attaching the parallel rods to the platform but do not remove them.
# After the epoxy has set for 20 minutes, loosen the nuts attaching the parallel rods to the platform but do not remove them.
# With the parallel rods loose, insert the ends of the cross rods into the bearing saddles and once in place, tighten the nuts so that the parallel rods are again firmly attached to the platform.
# With the parallel rods loose, insert the ends of the cross rods into the bearing saddles and once in place, tighten the nuts so that the parallel rods are again firmly attached to the platform.

Revision as of 21:52, 6 June 2013

Y-carriage

MOST HSPrusa y-carriage 0.jpg

Printed Parts

Y-axis parts, including the carriage, are white or clear translucent. All of the carriage parts are printed in ABS whereas the y-motor mount, pulley and belt terminators are printed in harder PLA.

Description Count Color Image
Belt dog/spacer 1 White MOST HSPrusa y carriage belt dog.gif
Left hand corner 2 White MOST HSPrusa y carriage L hand corner.gif
Right hand corner 2 White MOST HSPrusa y carriage R hand corner.gif
Bearing saddle 4 White MOST HSPrusa y carriage bearing saddle.gif

Vitamins

Description Count
185mm x 5mm carbon fiber rod 2
200mm x 5mm carbon fiber rod 2
M3 x 16mm cap screw 4
M3 nut 12
M3 washer 8
LM8UU bearings 4
395mm x 8mm drill rod 2
Heated build platform 1
10k ohm NTC thermistor 1
400mm 16AWG speaker wire 1
400mm 28AWG twisted pair 1
Small wire ties 10
5 Minute two-part epoxy

Assembly - Summary

  1. Prep printed parts
  2. Test fit components
  3. Epoxy parallel rods to corners
  4. Epoxy cross rods to bearing saddles

Assembly - Step-by-Step

  1. Ream the screw holes in the corner pieces with a 3mm drill bit. Clean out nut traps with a sharp knife.
  2. Clear obstructions from the wire tie slots in the bearing saddles and any lumps on the surface where the bearings will rest.
  3. With a 5mm drill bit, ream the holes in the printed parts where the carbon fiber rod will fit. Note that the holes for the cross rods extend only half way through the bearing saddles. Do not over ream the holes; the carbon fiber rod should fit tightly in them.
  4. Assembled corner piece.
    Place an M3 x 16mm cap screw through the hole in a corner such that the head of the screw is on the side opposite the nut trap. Thread an M3 nut on the screw and use a 2.5mm Allen key to tighten the screw, pulling the nut fully into the nut trap. Both the head of the screw and the nut should be fully in their respective recesses. Thread another M3 nut onto the screw. Repeat with remaining corner pieces.
  5. bearing saddles with bearings.
    Insert wire ties into their slots in a bearing saddle. Make sure that the bearing seat is clear of protrusions and firmly push a bearing into its seat in the saddle and secure it in place with the wire ties. Repeat with the remaining bearing saddles.
  6. For the following steps, keep the solder pads on the heated build platform nearest you, so the text is properly oriented and facing you. Place a left and right corner piece at the top and bottom of the heated build platform oriented so that the holes for the carbon fiber rod are nearest the interior of the platform.
  7. Corner piece attached to heated build platform
    Attach the right corner pieces to the board as shown with the platform sandwiched between two washers and nuts. Do not tighten the nuts.
  8. Right corner piece with carbon fiber rod.
    Push one end of the 200mm long carbon fiber parallel rods into the right corner piece as shown.
  9. Corner piece, saddles and rod
    Push onto the carbon fiber rods a pair of bearing saddles with the holes for cross rods facing towards the interior of the platform.
  10. Insert the rods into the left corner pieces and then attach the corner pieces to the build platform. Finger tighten the M3 nuts and check that the entire assembly fits together properly.
  11. Detach the left corner pieces from the platform and pull the parallel rod ends free from the corner pieces in preparation for epoxying the parallel rods to the corner pieces. Pull the cross rods out of the bearing saddles and set aside. Leave the bearing saddles in place on the parallel rods!
  12. Mix a small amount of epoxy and with a small applicator (toothpick-like) apply a small amount in the holes in the corner pieces where the parallel rods fit. Also apply a small amount to the ends of the parallel rods.
  13. Push the epoxy-wetted parts together and attach the corner pieces to the heated build platform assuring that the platform is sandwiched between washers and nuts. Finger-tighten the nuts.
  14. Insert a y-axis guide rod into the LM8UU bearings on one of the assembled sides to align the carbon fiber rod and corner pieces. Once the rod and corners are aligned and centered, tighten the nuts such that the corner pieces are firmly affixed to the platform. Repeat with the opposite side keeping mindful of the fact that the epoxy begins to set in five minutes.
  15. Let the epoxy set for 20 minutes while with the thermistor, bend the leads so that the thermistor sits like a tripod with the bead acting as one leg. Spend the remainder of the time HS_RepRap_x_axis#Assembly_-_Step-by-Step prepping X-axis plastic parts.
  16. After the epoxy has set for 20 minutes, loosen the nuts attaching the parallel rods to the platform but do not remove them.
  17. With the parallel rods loose, insert the ends of the cross rods into the bearing saddles and once in place, tighten the nuts so that the parallel rods are again firmly attached to the platform.
  18. Properly spaced cross rods.
    Space the saddles roughly equidistant from corners and push the belt dog from side to side to insure that the saddles are properly spaced. Once everything is in position, mix epoxy and with an applicator apply to all the joints on the saddles.
  19. Return the belt dog to the center of the cross rods and apply epoxy to those joints.
  20. Apply a small amount of epoxy to the middle of the heated build platform near the belt dog. Roll the thermistor bead in epoxy and place the bead on the dab of epoxy on the heated build platform.
  21. Allow the epoxy to set for 20 minutes while moving on to x-axis assembly.

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MOST_HS_RepRap_parallel_build_overview

MOST HSPrusa y-carriage 1.jpg MOST HSPrusa y-carriage 2.jpg MOST HSPrusa y-carriage 3.jpg MOST HSPrusa y-carriage 4.jpg MOST HSPrusa y-carriage 5.jpg MOST HSPrusa y-carriage 6.jpg MOST HSPrusa y-carriage 7.jpg MOST HSPrusa y-carriage 8.jpg MOST HSPrusa y-carriage 9.jpg MOST HSPrusa y-carriage 10.jpg MOST HSPrusa y-carriage 11.jpg MOST HSPrusa y-carriage 12.jpg MOST HSPrusa y-carriage 13.jpg MOST HSPrusa y-carriage 14.jpg MOST HSPrusa y-carriage 15.jpg MOST HSPrusa y-carriage 16.jpg

MOST HSPrusa frame 10.jpg MOST HSPrusa frame 9.jpg MOST HSPrusa frame 8.jpg

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