I had an Eureka grinder for ages. With this kit, and a bit of a tilt, I turned it into a single dose, low retention solution I needed for a fraction of a price of a new grinder. I'm happy.
The quality is very good, and it ticks all the boxes for me. I wish the hopper would slide in a bit further, though. I jammed it as far as I could, but the gap is present, creating a place where the detritus gathers. Other than this, I cannot fault it. 4.5/5

Exceeded my expectations, I’ve some communication with the creator on discord and I really appreciated his answering my questions and willingness to help

Works well. Gets me to a ‘full weight in full weight out’ measurement.
Clean up is now WAY easier

It works perfectly and manages to convert the Eureka into single-dose mode. The only downside is that the tray does not stay magnetically attached to the base despite having magnets for that purpose.

I'm reviewing this feeder after having less than a month of use. So definitely not a long term review - which I prefer for usefulness. I'm using this feeder with a Niche Zero and Niche Duo with the hot start kit and bellows that is available. The DF64 version of the CremaLoop feeder works like a charm with this combo. It does do an extraordinary job in doling out the beans. It greatly reduces fines in grinding coffee. Do I have a particle distribution tool? NO. But, required grinding requires a much finer grind. One negative that I've encountered: I have found that the feeder can stall on a stuck bean. No big deal, just push the stuck bean out where it is jammed. It's going to take time to figure out the taste impacts. My first expectation that I cannot prove yet, is that a there is major benefit in having conical burrs using this feeder for pour over with light roasts. I'm not sure what the positive or negative impacts are for conical espresso; but I'm guessing that they would not be much of an improvement in this case if any. Coffee is fifth dimensional chess, so this adds another dimension onto popular grinders that is only available with grinders with a build-in auger. This is an elegant solution for a great deal of the grinder market.

Selbst bei technischen Problemen gab es innerhalb kürzester Zeit Lösungen!

It works perfect

Makes well what it is designed for. Blows out about 1 - 1.5 g. every time after grinding out of my Mignon XL. With this bellow the grinder can be well used as a single dosing. Quality is also nice. I took the one with the wooden lid.

Works great, consistent feed into hopper. Have recommended and would buy again.

I was sent a 54mm handle on accident to go with the 58mm shaker. This was not an issue as I reached out to MHW Bomber and they promptly responded and sent me the correct one. Very pleased with the product. Still has a bit of retention, but that's to be expected and nothing to complain about. I wiped it down with some rubbing alcohol fresh out of the box and that helped. Overall this is a great product if you want to dose directly into a blind shaker and eliminate the need for WDT.

It arrived fast, was easy to assemble and install and works as expected. I'm very happy with it.

Excellent - very well made and works perfectly for single dosing. Also good for helping keep grinder clean. Very easy to swop to from normal hopper so easy to swop in and out as required

Works great as expected.

Excellent upgrade for the Mignon grinder

This makes pouring the beans into the grinder much easier and cleaner. The beans does not jump around as much compared to using the original hopper. The top also serves as a dosing tray which is another plus.