S1 Pro Brace Redesign

Increase your Ender 3 S1/S1 Pro's stiffness by adding this simple modification.
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updated February 2, 2024

Description

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Simple cheap mod for your S1/S1 pro. 

Required Hardware: 
     -All stock bolts are replaced by M4x45 Bolts. 

     -You will need two 3/8th inch by 24 inch rods (I purchased these from my local hardware store for $3 a piece) 

     -Eight 3/8th inch nuts

     -I didn't have any washers on hand, but I'd recommend putting some washers as well. 

Print requirements:

     -At minimum 4 walls

     -At minimum 5 top/bottom layers

     -At minimum 15% Gyroid infill

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Model origin

The author remixed this model.

Differences of the remix compared to the original

I really liked the idea of this modification and wanted to do it for quite some time. I downloaded the model that was remixed and found a few issues. The holes were not the correct size for the rod, the holes were not lined up straight, the models themselves were not straight, they are twisted on almost every single face and the top mounting brace didn't actually screw into any of the extrusions of the printer as well as you lost a bit of z build height. 

I've completely redesigned both the top and bottom braces. Everything is straight and square, all of the holes line up, all diameters fit the requested hardware. 

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