First fixed bike build thread - Help build my first singlespeed or fixed bike

Carbon is opted against due to performance, but surely u can build a fixed wheel bike which is capable of matching of at least getting close to a road bike? I can understand it would me a little limited due to the gearing though

With regards to frame weight; what weight do steel frames go down to? I'd be looking for a 60cm frame potentially with carbon forks for a smoother ride

I'm not sure what you are asking? Performance is limited by the rider not the bike.
My Cervelo SuperProdigy is around 1.3kg for a 56cm steel frame.. a 60cm one will be heavier.