You have two options: buy CE with real money (very fast) or buy it with crowns (very slow). Assuming that you mean the latter, please search Google for something like "spiral knights crowns fast", and you should find many, many threads about how to earn crowns fast. Don't start another thread; there's always one underway.

The crafting part of the game is supposed to be slow. Be patient and enjoy the gameplay. That's my advice anyway.