Skip to content

Paste Extruder

Motor Wiring (Perform in Mendel)

Collect:

  • NEMA11 Stepper
  • stepper-adapter PCB
  • adapter-mount and adapter-cover print
  • Loctite
  • Molex Micro-Latch 53254-0670 1x06 Connector

Process:

  • Solder Molex connector into stepper-adapter PCB

  • Snip the legs off the bottom of the board after soldering, getting as close to flush as possible.

  • Glue stepper-adapter PCB into adapter-mount print as shown. Make sure the top surface of the board sits flush with the print. let dry

  • Apply glue to the backside of the adapter-mount and press onto the side of the stepper with the cable port, as shown.

  • Make sure to press it firmly, centered on the motor with an even border as shown. let dry

  • pull the wires up over the board, and snip along the top edge of the four plated pads

  • Apply solder to all four pads on the stepper-adapter PCB.

  • Strip all four wires and apply solder to the exposed wire

  • using tweezers, connect the wires to the pads, making sure they go straight up and do not cross

  • apply glue on the edges of adapter-cover, and press it onto the adapter-mount as shown. make sure there are no gaps, and it lines up with the bottom edge of adapter-mount. let dry.

  • Your assembly should look like this when complete

Base Prep

Arbor press an M3 square nut into the void in the extruder-base.

Attach the cartridge-clamp using an M3 x 20mm bolt.

Motor Prep

Lightly screw four M2.5 x 5mm screws into the mounting holes on the motor.

Get the extruder-gear and align its "D" profile with the "D" profile on the motor spindle. Lightly press it onto the spindle.

Load it into the arbor press in the jig. This jig is critical, in that it supports the shaft while pressing on the gear.

Put the pressing tool on top of the gear. Also, place the shim on the top surface of the motor.

Press the gear down until you touch the shim.

Remove from the jig and package in bubble wrap.

Cartridge Prep

Follow the section below twice in order to prepare 2x bagged cartridge assemblies

Get a cartridge-gear, a M3 hex nut, a 3ml-luer-syringe, an M3 x 70mm threaded rod, a bottle of Loctite, and a plunger.

Use the arbor press to set the hex nut in place in the cartridge-gear.

Remove the center part of the syringe, and remove the rubber gasket at the end.

Apply some glue in the opening in the plunger, and push the threaded rod into the opening. You might need to twist/thread the rod to be fully seated in the plunger.

Press the rubber gasket onto the end of the plunger.

Thread the extruder-gear onto the threaded rod, making sure that the nut is facing the plunger.

Push the plunger all the way down into the syringe base, unthreading the extruder-gear as necessary.

Bag the cartridge assembly into a 3in x 4in bag.

Luer Lock Syringe Coupler

  1. Collect the following from inventory:

    • 1x luer-lock-syringe-coupler
    • 1x luer-lock-syringe-coupler-label
    • 1x 3x4-bag

    alt text

  2. Adhere luer-lock-syringe-coupler-label to 3x4-bag

    alt text

  3. Place luer-lock-syringe-coupler in bag before sealing shut

    alt text

  4. Set aside for packout

Kit Packing

Apply the product label to a 6in x 9in bag.

Bag two 20-gauge-luer-lock-tips into a 2.5in x 3in bag.

Bag the following items into the product bag: