Scalar S – Dual drive system bed upgrade

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Dual drive system upgradeThis page describes the installation of the Dual drive system bed upgrade for Scalar S 3D printer.

It postulates that you have the standard version of the Scalar S, and that you are upgrading your Y Axis.

This upgrade is a mechanical upgrade only.

It doesn’t require any firmware updates.

 

 

Bed disassembly

scalar S, upgrade plateau à double entraînement


Removing belts

In order to continue, it’s best that you remove the belt already installed.

Keep it close as you will need it very soon.


Y axis positioning


Rail assembly

Check the procedure here


Installation of the new axis


2 sides synchronization

Remove the black screw already in place.

Keep it safe for future use.

Take great care to the pulleys directions

Do not tighten the pulleys


Tighten the stabilization screws

These screws are here to stabilize the extrusion profile, to prevent it from rotating.

Back view of the printer, we install the M5x35 black screws that we kept from earlier.


New lower plate installation


Heat plate installation


Belts installation

Follow this procedure


Bed alignment

This step allows to make sure that your bed is properly aligned to your chassis

This step takes into account that your pulleys are not tighten on their shafts. They must remain loose until the end of this alignment procedure.

Once you have checked that one side is aligned, you can tighten the red extrusion holders on the chassis on one side only.

Here we are tightening the right side. It will allow us to align the other side more easily

 

Slide the bed toward the back of the printer. The left axis should align itself once the bed has reach the end stop.

Hold the plastic support and tighten it on the chassis.

Now, slide again the bed toward the front of the machine this time. Once at the end, hold the plastic holder and tighten it on the chassis.

 

You can check that the bed is centered using the hotend. It should be able to move over the whole heatbed surface. You can adjust the position of the X end stop in order to fix potential centering issues.

Your heatbed should move freely back and forth with no issues linked to parallelism.

Also your bed should be properly aligned to your chassis now. You can check that by moving the bed edge to the front of your chassis. Using a ruler, you should see that the bed is parallel to the front of the chassis on both sides (right and left).


Tightening the Pulleys

Now that your bed is properly aligned and centered you can tigthen the 4 pulleys  and you are done!