Product review (4 stars): My first pour foaming problems are virtually gone and I'm very happy with this purchase
This is essentially a computer fan with some low-resolution 3D printed parts added. I installed it as directed but needed an extension cord so the power supply could reach, which is no big deal.

All in all it works exactly as advertised. It's ran continuously for a couple weeks so far with no hiccups and no tell-tale changes in tone indicating impending failure.

My first pour foaming problems are virtually gone and I'm very happy with this purchase.

I've recommended it to my friends.