Reinforcing Foot Block for Qidi Q2

Description

I always wanted to make some improvement on Q2's foot support. The stock ruber feet are small and don't really seem to be capable of its weight (>25kg)，especially with fully loaded Qidi Box on the top, the total weight goes to more than 35kg (might be heavier than your gf, lol~) . I have then checked Q2's foot support structure and have found out it's weaker than what I had thought.

Here I came up a design for it. Using the specially designed foot-blocks to reinforce it and to mount bigger and thicker rubber feet on it. 

Benefits

Stronger and more stable, better shock absorption and cushioning. Theorically, this should help improving your printing quality, better input shaping.

Increasing the space from the machine's bottom to the ground which not only allows better access to the bottom but also has better cooling of the Z moters and other components such as the power supply. 

Application

It's very easy to install. Just lay down your machine on the side, unscrew the original feet, then insert these 3D printed feet blocks into its feet structure (might need a rubber hammer to hammer it in). And then install the bigger and thicker rubber feet you wanted to replace the original ones. You could also fill it up with structural adhesive inside the feet structure before you insert the feet blocks to make the whole structure even stronger (Recommended).

Personally, I purchased pre-made round rubber feet, the dimension is φ50x40mm with a staged though hole which are φ12 and φ20mm in size. I picked M4x35 self-tapping screws (it would be more secure to use M4x40 instead, unfortunately I only have M4x35 in my stock) and M4x20x2 washers to pair with this paticular rubber feet.  The stock mounting screw for Q2's small feet are M3.8 or M4x15 self-tapping screws. 

There are many types of feet you can choose on Printables. The main purpose of this design is to focus on reinforcing the feet supporting structure, to have a better and more stable contact surface with the feet you would mount on it. It doesn't matter what type of feet you would use. My application above just an example for your reference.  You could print the feet with TPU as I have uploaded the foot model. :)

Note, the feet blocks are not the same due to Qidi's non-uniformed design. There are Front-Right, Front-Left and Rear blocks which I have marked on the bottom of them. However, I am not sure if all the bottom plates were injected from the same tooling. Make sure to try the blocks' fitting before your final inserting as the feet blocks are going to be really hard to take out if there were something wrong. 

Update

Jan 18, 2026

1. IMPORTANT! Turns out they do have different bottom plate version which I have discovered lately. So be sure to check your Q2's feet structure first before you print the models. Just uncrew the stock rubber feet and look into it. Currently I have found 2 versions (mine 2 Q2s are different), one version has different front feet structure which their inner Hex-type thin walls are not evenly distributed( you can see from the diagrams underneath), I call it Type-1. Another version is actually better which those inner thin walls are evenly distributed, I call it Type-2.  Basically, if your Q2 is Type-1 version, you'll need to print Front-Left, Front-Right and two Rear ones. If your Q2 is Type-2 version, you only need to print four Rear ones. However, I have no idea whether there would have other versions of the bottom plates. Again, check it first!

2. Uploaded higher version of the feet blocks. It's 27mm in height. 

Jan 22, 2026

FYI, for ones who wanted to have the same type of rubber feet as mine. You could search on AliExpress by using the keywords "Circular Countersunk Rubber Shock Absorber Pad", something like this. :) You could print the foot with TPU as I have uploaded the foot model.

May 3rd, 2026

Uploaded a foot model which is the same dimension as mine (φ50x40mm) except I changed the small hole to 4.2mm for M4 screws. So you can print it with TPU by yourself instead of buying from market. The file is in STEP format so you could modify it as your wish. 

Tips

FYI, I printed with PETG and sliced with 0.2mm layer hight, 4-walls, 5 top and bottom layers, 30% Adaptive Cubic infill with 2 fill lines, 0.4mm nozzle.

Diagrams

You could print the feet with TPU as I have uploaded the foot model.

You could print the foot with TPU as I have uploaded the foot model.