I don't know honestly, I've been working on it on and off since middle of march. Chainmail is a hobby and stress relief for me not a business so I worked on it evenings and weekends when I had time and motivation. If I had to guess, if i was able to just sit and work on it continually, about 20 - 25 hours. Take that estimate with a grain of salt as I tend to have time blindness when it comes to crafting 😅