The mold makes a nice coffin box. There’s a lip on the lid so it fits into the coffin. Like other reviewers stated, you have to work the air bubbles out of the lid; I used a toothpick and squeezed the mold. The mold makes shiny pieces.My lid mold is a little big for my box. To get the red lid to fit on the coffin I had to force it in after unmolding before they were fully cured. It’s not a perfect fit, but you can’t tell unless you’re looking right at it’s side.Leaves a nice shiny surface and clean lines. However when pouring the lid I could see it bowing outward as I filled. After it cured the lid still fit on the box base,but its way more thick than need be. I recommend filling below the last ridge line,and then finish pouring it off after that first pour hardens up. Don't need to wait till cured to finish though. The base mold stayed firm throughout pour,and cured nicely to a shiny clean lined surface. If the lid piece was just a bit thicker, I feel it would have not caused the issue of "bowing", and i would have rated a 5☆otherwise.I ordered 2 of these a both of the lids have torn and are now very hard to useA bit smaller than they look in the pictures but I’ll make it work. Seem to be of good quality and the shapes are different enough that I’m gonna find other projects to use them for.The base of this mold needs added support after pouring. The sides droop outward unless you place something up against it while it's curing.Not a deal breaker for me, but it's a little annoying. It would be nice if the designer included a removable hard plastic support with it. (I have several silicone molds besides this one that includes supports to maintain the shape after pouring)Currently, I stand up two hard cover books and push them in slightly to support the sides, but it is difficult to get them uniform.My 2nd complaint is the very thin lid mold. The lid of the coffin will probably work fine for a resin pour, but using craft cement it is difficult to get all of the air bubbles out. The top part of the lid does not allow for the mold be built up to endure a snug fit onto the coffin base. If I want the lid to stay on nicely, after the coffin is done curing, and has been removed from the mold, I mix a thicker cement and spread it on the back-inside part of the lid to raise the lip of it. When that dries I gently sand with a 100-120 grit or higher and dry fit everything before painting and sealing it. Also, I personally like to attach a handle to the lid. I use half of a mini skull mold, attach it with permanent adhesive, then wait another 24 hours to paint and seal.It is really cute the only issue is it's not really sturdy and it takes a lot of resin to fill it I just wish the science were more sturdy you have to stick something on the sides or it'll work the shape...No matter how hard I tried, I could not get the lid to sit right on top. It just doesn’t line up correctly and I believe that’s due to how it’s made. Also, Making sure you have no air bubbles is incredibly difficult especially down in the bottom and corners. Despite my best efforts, it still came out with bubbles. Still, my first attempt and it’s ok. I did make sure to stabilize the sides of bottom piece because it bowed out when resin was added.I love this mold the box is so cute and lid fits good does what it supposed my only problem is there is part of a octagon shape in mold lid that shows on the resin and the edges of lid are hard to get all the bubbles out ofSo teeny I wonder if they are designed to be a joke gift for a resin crafter.