well, I had to, but when the instructions say " make your grinder look like the next 3 photos" and asks you to use a specific size bolt/washer, without a previous reference of which one it is, made the instructions almost impossible at times. Good thing, I am pretty good at problem solving! And the pictures of the finished product on the website/video definitely helped! Still took me over 3 hours. Funny that he says it should take about an hour...maybe for him, since he built it! HAHA!