Tip:
The mesh/screen through which the vapor passes into the tube also accumulates a lot of oil and will eventually start to clog. You'll notice this when it gets harder to draw in the vapor. To replace it, unscrew the four screws of the round middle plate, lift it off and take off the old mesh. It is placed in a small indentation on the wood, so you may need a small screwdriver etc to crank it off it's place.
You can use bong downpipe screens as replacements, the smallest ones should fit as is (I had to push it down from the middle a bit, but it works just fine
) or you can use pliers to cut a bit off the edge.
What about the old, dirty mesh? You can extract the oil with a solvent of your choice, or if you can't be bothered with that, just put it in Venus' bowl like you would your weed and vape up
.