Thats weird.. That it takes so long for you to upgrade your builders. How I did it was to first put my adept builder and two others on building the huts and the dam. My adept builder was by then a master but the other two still adept. Luckily I could make the cutting tool so then I put those two on cutting the vines (or thornbushes) and when they were done tadaaa!! Masters!

[censored]... I've got two master builders, and a third adept who is JUST on the verge of becoming a master, but now I've run out of building projects. The huts are done, the dam's built, and the briar's cleared. I guess I'll just have to build up more tech points and solve another puzzle to find another building project? I hope my masters don't die by then! One of them is getting up there in age (and should become an elder soon - master in two skills, adept in one, and trainee in another).

I started off and gained one master by building and fixing the first 2 buildings and then the dam and the thorns but I didn't realise at the time I'd need more than one, by the time I realised my one master was ready for popping his clogs and it was too late to get others up to speed, which is why I think I'm going to have to start again lol
I'm hoping the last 2 puzzles might help and am furiously racking up tech points so I can get my culture and exploration level 3. Wish me luck

Nita... you have to build more huts later on and even a hospital! So you still have time

Already got those Just keep making them fix them now lol

oi.. Thats no good Then I do not know what advice to give you.. Goodluck though!

Woo Hoo I have a master builder from starting to complete one of the final puzzles, I now have the other 3 adept builders busy on the job in the hope that they all gain master....wish me luck!!!!!

You sound as frustrated as I was Nita...but hang in there. Took me four days to get even one master builder and then BANG, all of a sudden I had my 3. I was getting a little nervous though because they were all getting up in age once again and I thought I was going to lose them. I think my oldest elder was 73 when they died.....So like I said...hang in there! It pays off in the end!

ooppss guess I was wrong...my oldest was 78!

There is a way to train three master builders at the same time, I've done it on all four of my villages. As long as they're already at adept, you should have no problem making them all master builders at the same time after you get the cutting tool. I think that actually is the way that you are supposded to get them. It's the only way I have figured out that doesn't involve training one at a time, which risks one of them dying before you get the others there.