Prusa Research Original Prusa i3 MK2 User manual

1. Y-carriage drilling
Written By: Josef Prusa
1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 1 of 10

Step 1 — Assembling P-drill
Y-identifier
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3 mm drill bit
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P-drill
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M3x12 screws
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M3nS square nuts
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Step 2
Insert M3nS square nuts into the nut traps in the P-drill printed part.
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1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 2 of 10

Step 3
Insert the 3 mm drill bit all the way into the P-drill printed part.
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Step 4
Insert M3x12 screws into the P-drill printed part.
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Tighten the screws as much as possible.
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1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 3 of 10

Step 5
Highlighted holes are going to be
drilled in next steps.
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1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
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Step 6 — Drilling Y-carriage
Using the assembled P-drill, drill out the threads from highlighted holes.
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Rotate with the P-drill assembly clockwise as shown in the picture.
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Apply force in direction through the Y-carriage.
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It's similar to opening a wine bottle, but don't apply that much force or the drill bit will get stuck. If it
gets stuck, just rotate the opposite direction and repeat with smaller force.

If the drill bit is slipping in the printed part, just tighten the M3x12 screws a little more.

1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 5 of 10

Step 7 — Identifying Y-carriage orientation
Place the Y-identifier on the Y-
carriage as shown in the picture (pin
on the top, hanged on y-carriage,
pushed as down as possible).
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Make sure that you have the side
with two bearing holes on the left
hand side.
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1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 6 of 10

Step 8 — Y-carriage identifying
Make sure that holes in the middle of the Y-carriage are perfectly aligned with the Y-identifier as
shown in the second picture.
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If they are not, turn the Y-carriage upside down and it should be aligned.
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Keep in mind that you still need to have the side with two bearings on the same side as in the
previous step. IT'S MANDATORY!

1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 7 of 10

Step 9 — Y-carriage marking
DOUBLE CHECK that you have
aligned holes in the Y-carriage with
the Y-identifier and two bearing
holes on the left hand side.

Make a mark on the top left corner
(with a permanent marker or with
the drill bit).
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1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 8 of 10

Step 10 — [OPTIONAL] PSU reinforcement part 1
If you want to have as close experience as MK2 builders have, you can glue PSU-reinfocement
part to you power supply.

PSU-reinforcement

Power supply

Apply superglue (or alternative) here.

1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 9 of 10

Step 11 — [OPTIONAL] PSU reinforcement part 2
Press the PSU-reinforcement with glue on your power supply and wait until the glue dries.
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Step 12 — Let's assemble!
Great, you're ready to assemble the
new MK2 printer.

You can continue by: 1. Introduction
from Assembly Instructions for
Original Prusa i3 MK2.

Happy assembling!

1. Y-carriage drilling Draft: 2016-06-21Guide ID: 131 -
This document was generated on 2019-09-29 05:44:59 AM (MST).
© 2019 manual.prusa3d.com/ Page 10 of 10