SimEyeSee WarpShield

The SimEyeSee WarpShield is an airflow deflector for 3D printers that use a secondary auxiliary fan blowing from the side.

This includes Bambu Lab X1, P1, P2, and H2 series printers, as well as printers from other manufacturers that employ side-mounted or chamber auxiliary fans, such as some Creality, QIDI Tech, FlashForge, and AnyCubic printers.

Unlike a separate accessory you install on your printer, the WarpShield is a 3D-printed accessory that prints alongside your model. It redirects the auxiliary fan’s side-blast airflow upward and along the actively printing layers, protecting the lower layers (where warping usually begins) while still focusing strong cooling where it improves print quality.

The WarpShield is intentionally lightweight and efficient. Its walls are approximately 1 mm thick, using only a small amount of filament and adding a modest amount of print time depending on size. In multi-color prints, material waste can often be reduced further by routing purge material into the WarpShield instead of discarding it.

With the WarpShield in place, you can often run the auxiliary fan at 70% or higher without warping on the fan-facing side of the part.

Why It Exists

The WarpShield was developed in response to real-world printing challenges encountered while designing the

EmBlazeGuard Door Holder Panels:

👉 https://SimEyeSee.com/EmBlazeGuard/

Those panels rely heavily on fine details, thin walls, and overhangs, all of which benefit from strong auxiliary cooling. At the same time, their geometry makes them highly susceptible to fan-side warping when exposed directly to side-blast airflow.

The WarpShield was created to resolve that conflict — preserving aggressive auxiliary cooling for quality and detail, while protecting the lower layers where warping typically begins.

You can see this behavior demonstrated in real-world testing here:

👉 https://SimEyeSee.com/WarpShield/#Test

What Problem It Solves

Auxiliary side fans are excellent for:

- Overhangs

- Bridges

- Thin walls

- Fine details

…but they frequently cause:

- Fan-side warping

- Edge lift

- Corner curl

- Early bed separation

The WarpShield solves this by reshaping airflow instead of blocking it, preventing overcooling of the lower layers while preserving strong cooling where it is beneficial.

How It Works (In Simple Terms)

- The WarpShield acts as an airflow ramp, not a wall

- Side-blast airflow is lifted upward and over the print

- Lower layers are protected from uneven cooling

- Upper layers still receive strong airflow for quality and detail.