Scalar S - 3D Printer (20x20x20cm)

by 3DModularSystems, published

Scalar S - 3D Printer (20x20x20cm) by 3DModularSystems Dec 16, 2016


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design spark mechanical

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This thing presents Scalar S 3D printer.

Scalar Family 3D printers are "scalable" printers.

This version is a basic version of the original Scalar XL model ( http://www.thingiverse.com/thing:891409 ), using 2020 extrusion profile with a 20x20x20cm build volume.

Reviewing the idea of a reprap printer, a printer that can auto replicate and scale, we wanted to propose a 3D printer with plastic parts for you to print, and with a way to "scale" easily.

Key Features:

  • Simple design based on standard 2020 extrusion profiles
  • All axis are rolling over VSlot extrusion profiles. All Smooth rods have been removed removed
  • More secure with our new SSR cover system modified for 2020 ( http://www.thingiverse.com/thing:1912871)
  • Evolutive Design : More upgrades are to come!
  • Lightweight and strong frame
  • Smooth and Silent: using VSlots and V Wheels for X and Y axis

Assembly instructions:

Assembly instructions can be found on our website documentation page (in french for now, but can easily be understood by english speeking folk:


  • 2017.12.20 - Add X axis end stop for M2.5x8mm screws (2020_X_EndStop_Holder_screw.stl)
  • 2017.08.16 - Re-inforced X axis Idler tensioner
  • 2017.01.31: Update all parts that were improved.
  • 2016.12.28: removed wrong models and added missing ones
  • 2016.12.16 : Original release


This thing is a remix from our original version:
Many of you liked it.
The main idea remains, but we adjusted the overall size to something more standard, and we reviewed/remodelled all the plastic parts to:

  • Have a lighter design
  • Less parts
  • Reduce noise
  • Increase Z axis Accuracy
  • Increase X axis smooth motion
  • Upgrade heat bed motion system
  • Designed a box for the electronics
  • remove Belt tensioner
  • Add spool holder based on extrusion profiles
  • Using a 120W PSU
  • Using a 250W 220V heatbed that doesn't require big power supplies.

Printer presentation




Hot end holders:

Upgrades from Scalar Owners:






The procedure to install the firmware on Scalar 3D printer is available on our documentation page:
alt text

You will also find the newest firmware available to download directly on the page.
Special thanks to Marlin Community for providing this great firmware and evolutions.


Where to buy:



Mainly all technical information can be found on our website:

But here is a summary of the main characteristics :

Scalar S Premium :

  • Standard build platform: 200x200mm heat-bed
  • 220V 250w silicon heat-bed with a 3mm aluminium print surface
  • Compatible with well known hot ends (E3D, E3D Lite6, Hexagone, ...), 3mm and 1.75mm
  • Built-in blower fan
  • Built-in LCD and SD card support
  • Built-in spool holder
  • 120W 12V stand alone power supply block
  • Inductive probe for bed levelling
  • Plastic parts available for different hot ends: E3D, E3D lite6, AluHotEnd and Prometheus V1.1.
  • Modular Design


Because you guys have different ways of life, events happening and so on, we wanted to make sure that those printers can be scaled by only adding the necessary parts to upgrade/downgrade your printers.
This way whenever you want the printer to be bigger then we have a kit for that.
The Scalar S has just been released so future upgrades are to come.


Available on our documentation page http://doc.3dmodularsystems.com/assembly-instructions-for-scalar-3d-printer/notice-de-montage-de-scalar-s/

3D Modular Systems
Evolutive 3D Printers

You enjoy it and want to help us with a donation: https://www.paypal.me/3DMS

Twitter: https://twitter.com/3dmodularsystem
Youtube: http://www.youtube.com/c/3DModularSystems3DPrinters

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I don't find the BOM of the Printer on your Homepage

where is the parts list? I think I'm going to make one, but need to know what to get. I can figure out the printed parts and vslot, but I want to know what wheels and screws. Thanks

We don't provide BOm because all the parts are described inside the online documentation page on our website.
A BOM is too much work for us. Whenever we update the documentation we have to think about updating the BOM, so we cannot spend our days doing that.

I have some aluminum extrusion I ordered from Folgertech with seems to be "universal". I ran out of aluminum and ordered Open Builds V slot carriage but the dimensions are slightly difference because of the actual V-Slot, so when you mount the carriage its loose, but tight on regular extrusion. Will you be releasing a version for V-Slot?

The current version is made for genuine VSlot extrusion 20x20 already so it should fit any Openbuild Vslots 20x20.

I created a reworked bracket for attaching the lead screws to the x-axis trolley. I'm using the brass 8mm acme flanged nuts instead of the hex nuts for the lead screws.

It can be found here: http://www.thingiverse.com/thing:2068247

Z-Axis Holder for Flanged M8 Brass Nut -Scalar S 3D Printer Upgrade
by JMcAz7

Can you modifie with Tr8 braus nuts?

You have the original CAD files -> RSDoc (can be opened with design spark Mechanical).
SO it should be easy for you to update it.
Right now we are focused on other features.

where is the y axis idler for the 2020 ext. ?????

I Have updated the thing.
Please look at this one: