The valve is hard to adjust and the glass is very very fragile. It won't last long at. All ready need to purchase the glass filter/grounds holder.Asked company about replacement part. I might as well purchase a different gold brew maker, part and shipping was stupid.First off this comes with absolutely no documentation. This was not an issue for me, but it could be for some. Packaging was awesome as this came from Hong Kong. The box is about the size of a large shoe box and required a signature for delivery.Stand assembly is simple, unscrew the screws off the ends of the bars, remove the washers. The nuts attach below the base and the finished looking nuts attach on the top.This unit comes with filters to get you started. Assemble the glassware as shown on the box. Wet a filter and place in the bottom of the strainer, add medium ground coffee up to where the strainer flares out, wet another filter and place on top (not sure this is necessary, but I think it spreads the water over the grounds better) cover strainer with glass top with hole. Fill drip bottle with ice and fill remaining space with water (I used filtered). DO NOT put lid on drip bottle, unit will vacuum lock and stop dripping. Set drip to one drop per second. Check about an hour after you start to make sure the cold didn't affect your drip rate. Wait until liquid is gone from top and into bottom. Remove strainer. Enjoy coffee or put lid on carafe and store in refrigerator for up to two weeks.Good, relatively inexpensive unit that makes great cold brew coffee. Only drawbacks are that the glass is a bit thin, so need to be careful not to drop or hit it on the counter while cleaning and I would not trust it in the dishwasher. The lid to the upper container did not fit at all and fell inside the bowl the first time we tried to put it on and got chipped. The lid needs to either be slightly larger, or have some kind of gasket to hold it in place. Threw the lid away, but decided to keep the unit as it does work well and makes really good coffee.We saw a much more intricate version of a cold drip brewer on a cruise we took recently and fell in love with the smooth taste of the coffee it produced. This one is much smaller, but good for home use. It took a bit to find the right coffee grind (pre-ground tends to work better than home-grinding - we tried many options from fine to coarse) and the included filters tend to clog quickly. We switched out to cone filters that don't really fit, but work MUCH better. We are now pretty happy with this purchase (my wife for the cold brew; me, for the savings from not buying cold brew from the local coffeehouses!).Makes really great coffee and is pretty easy to use.Some tips:- Use a coarse setting when grinding- You want just enough to fill the center drip - I go with about 45g- Use a filter on the bottom and the top- Use a slow drip 1 drip per 2 seconds (or longer)- adding ice does not matter at all to be honestThere is a bit of a learning curve and it takes more like 6 to 9 hours and coffee lasts about 3 days refrigerated.From time to time, the middle floods, usually because the drip is too fast.Otherwise, great product, this is the best way to make coffee.I slightly wish the valve was a little easier to tune, it’s just very difficult to make smaller adjustments.I'm giving "Nispira" 5 stars for their Customer Service alone. We did have a defective valve that leaked. Amazon would not replace the part without us returning the entire unit in original packaging, reordering a new unit, then credit my account, etc..... I immediately wrote to Nispira and they sent out a valve for free! That type Customer Service so important to me these days. I really do appreciate it, the replacement arrived fast and no leaks! Amazon probably has some policy that would not allow this transaction to be convenient, so I give them 3 stars this time.I got this cold brewer for my husband for Christmas. He really likes the looks of this model! We think its very attractive. He's giving it 4 stars because of the very thin glass and the assembly was a tad tricky to keep the base flat and not wobble. He ended up bending the base and he is definitely mechanically inclined. Not a big deal to him. He read the reviews before choosing Nispira so, he's been extremely careful handling the pieces when cleaning. But I'm the one cleaning it and yes, just be mindful....... Hope this helps!This is a pretty good cold brew coffee maker. The glass is heat proof and high quality, and despite other reviews, I don't see it breaking unless it really drops on a hard surface. The most important component for a quality cold brew is the drip valve and the one included is excellent and keeps a pretty consistent rate from start to finish. It also looks stylish on the counter.I wish the metal base and the metal water reservoir holder used heavier metal and that build quality was a bit better. During assembly, 2 screws were difficult to thread, and the coffee and water container can be placed off center because of the design. Lastly, if you're brewing at the industry recommended 1:11 ratio of coffee to water you can't brew more than 700 grams of coffee, because the grind cup can only hold that much.I've been making cold drip coffee in a much cheaper maker for a bit now and I love it. The issue with my cheaper unit was the drip valve. You would get it set to the perfect drip and come back 5 minutes later and it would be at a complete stop. This unit completely solved that issue for me. I just set it and forget it. Love it.The only reason I gave it 4 stars was because there is no lid. I want to be able to take the 1000ml "beaker" and put a stop in the top and keep it in the fridge for a couple days. I ordered a couple corks online to try out.The valve lets water go through without any resistance. Literally no difference wether I use it or not, very disapointed.