It was like assembling furniture from IKEA except Ikea has more detailed instructions. It didn't help that there were loose bolts, nuts, and parts everywhere. For example, attach a handle. Aside from being impossible - the gear fell out so I had to invent straps to keep the handle in place. Everything else was a lot of guesswork - I finally found a similar model on YouTube that had an assembly video - it was VERY helpful. really heavy cock. But you can probably use any AC powered coffee grinder - I've tried it with five models I have and they all work. You can adjust the depth, width, thickness and even the angle of the handle hole. But 4.5 inches is fine. The more the better. Why? End of head to end of plate. A larger disc on a grinder isn't exactly a safe solution due to the speed, so if I'm cutting thicker material I have to flip it. The product photos are also confusing - they just mirrored some of the photos instead of shooting from a different angle, making the grinder look like it was mounted upside down. The plastic shade is slightly deformed, so not straight. Finally clamp so-so. Changing the angle is tedious and overly complicated - you need to use two Allen keys and a T-square every time. It's more of a guess. Build quality - 5 stars. Functionality - 4 stars. Instructions - 3 stars.