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Scalar S – Upgrade Z Trap

This page is dedicated into the setup of the « Upgrade Z Trap » kit of your Scalar S 3D printer using Trap Lead Screws

The whole procedure is to be done at the back of the machine

The Kit  contains

  • 2 Trap lead screws
  • 2 Steel Trap Nut
  • 2 plastic parts

Scalar S - Upgrade Z Trap

 

Unmounting the old system

We unlock the Z axis couplers from the leadscrew

 

Scalar S - Upgrade Z Trap

Scalar S – Upgrade Z Trap

Remove the M8 lead screws

Remove the previous plastic part that holds the Z nut

This part has a small hole at the back in order to insert the small nut.

Installation of the upgraded parts

Replace the previous plastic parts using the new set. Notice that the center hole is larger than the previous version to properly fit the new Trap Nut

Insert the new Hex Nut into the dedicated Grooves

Insert the new Trap Screws

Tighten the Z Coupler

The setup is finished

Firmware / LCD changes to be done

In order for the firmware to take into account the pitch of your new set of lead screws, you will need to update 1 parameter inside your firmware

If you have a LCD screen

Go into the LCD menu: Control>Motion>ZStep/mm

  • Replace the previous value 2560 with 2133.3
  • Save your new settings by going into the menu  Control>Save Config

Things to take into consideration

Has you have changed the pitch of the screw of your Z axis, make sure your slicer is using a compatible Layer Height

Check the following article to get more information :

What is the best “layer height” for your printer