I gave this to my 14 yr old grandson, and we spent the day (about 6 hours) building this together. Tho we built it together, he was the one who did the assembly while I punched out the pieces and did a tiny bit of sanding with the square of sandpaper provided in the kit. The instructions were clear and easy to follow. The pieces were easy to remove. The pieces fit tightly, sometimes needed a bit of force to connect, but that's what keeps them together. When we finished, the whole family gathered to watch the marbles roll. I'm already figuring out which Music Park "puzzle" I want to give him at the next occasion.It was great fun building it together, but he was capable of building it himself.

I'm an old man of 87 and have been building wooden kits for almost 80 of those years.
I've seen a lot of kits in my years and this is one of the best I've seen. The engineering, manufacturing and packaging are superb. Everything fits. The parts are easy to press out of their sheet of plywood. All parts are numbered and laser cut perfectly. The instruction manual is all pictures - no words, but it's fully understandable. No problematic translations here.They give you a little piece of sandpaper and that's all you need. The laser cutting is almost prefect.This kit is not anovernight project for the uninitiated but it actually goes together quite easily. I used tweezers and a small hammer as tools . Try one - you'll like it.

It's an amazing puzzle for all ages. I bought it as a gift for my husband and we put it together in about four days in sessions of about 2 hours.Now it's an eye catcher in our living room! We had a blast. This kit includes every tool and every material you'll need to put it together, so no need to buy anything on the side. It's just amazingly well done, very fun to assemble, very entertaining to play with, and on top of that it looks beautiful as a curious ornament!