Crazy Machines Elements
12 Achievements
Candlelight
Light the level with candlelight for 30 seconds.
7.8%
How to unlock the Candlelight achievement in Crazy Machines Elements - Definitive Guide
Danny Dubs 86
TrueAchievements
TrueAchievements
Place the three candles on the ground with about a candle's length between them. The exact distance isn't terribly important, so long as there's a decent gap between neighboring candles. Select one of the candles on the end and press right on the D-pad to light it.
Place one end of a fuse near the middle of the lit candle and the other end of the fuse slightly above the next candle. Grab each of the nodes in the middle of the fuse and bring them close together - you want the fuse to be as short as possible so you'll be sure to have a candle lit at all times. Be careful not to put the end of the fuse too close to the unlit candle, otherwise the fuse will cause the candle to burn too quickly to get the achievement.
Place the second fuse between the two unlit candles in the same way.
In the end, you should have a lit candle that will light a fuse when it burns about halfway down. That fuse will quickly light another candle that will do the same thing.
Once it's all set up, press Y to start the machine and you'll nab the achievement.
Perhaps the most important part is to play around with the precise positioning of all the pieces. Press Y and see what happens; if you don't have at least one candle burning continuously for ~35 or 40 seconds, you probably just need to jiggle the positioning a little bit to make it work.
EDIT: Special thanks to Spilner for providing an image of the setup:
Spilner1001
TrueTrophies
TrueTrophies
For this method all you need is some Candles and some Fuse:
1. Place a Candle with a flame (
on Dpad) on the ground2. Place another Candle over a few spaces next to it with no flame
3. Place a fuse with one end going from the base of Candle number 1 to the fuse of Candle number 2.
4. Repeat these steps so you have 4 Candles set up
5. Press
to start the machine.Your setup should look something like this
Here's a video
mjc0961
You'll first need to unlock the editor by solving the first five puzzles of the "Rigid Basics" pack in puzzle mode. See Perfect Puzzler if you need help with this. You'll also need to complete at least some of the puzzle packs to unlock the cannon and other useful parts, although it helps to just wait until you've unlocked Collector so you'll have everything at your disposal.
Credit for the following method goes to A47A47. Start a new level in editor mode, and select the candle from your inventory. Place one in the level, and then press 
to light the flame before placing a second. Next, get a heater and place it above the unlit candle. Take a chip controlled power socket and place it above the heater, and plug the heater into it. Now get a timer chip, use to set the countdown to 15 seconds, and place it near the power socket. Finally, use a wire to connect the timer chip to the power socket.
Start the machine. If you set it up correctly, the first candle will already be lit and slowly begin melting. Before it melts completely and goes out, the timer will have finished counting down, activating the heater and lighting the second candle. Shortly after the second candle goes out, the trophy will unlock.