A Punt is the divot at the bottom of a wine bottle. Some bottles have very large punts while others have flat bottoms. I fill the bottle to the top of the punt with wax I then tare the scale and add 10 more ounces. 

Note: The wax below the punt is excess and will remain when the wick has been spent.

More details.

Flat Bottoms vs. Punted Bottoms

The most unique thing about a CCC candle is that each one is hand-poured into an up-cycled wine bottle.
As wine lovers would know, there are a variety of wine bottle types available. This means that every candle is completely different depending on the type of wine the vessel once held.
There are two main wine bottle-candle  types ‘The Flat Bottom’ & ‘The Punted Bottom’ plus a few important distinguishing characteristics that make them different in both appearance and the way that they burn. 
The biggest thing to note is the same burn time.

Flat Bottoms

'Flat Bottoms' are identified by their flat base or nearly flat base. They are generally much smaller in diameter than the punted bottles and have slightly thinner glass which is generally a lighter shade of green. These will burn all the way to the base (remembering of course that you should always stop burning 10mm from the base of any candle to prevent the base heating and potentially cracking)

Punted Bottoms 

Punted Bottoms are easy to spot by the dome in their base called a 'punt' or a 'kick-up' Punts do not allow the candle to burn all the way to the base but they're significantly larger in diameter and feature a beautiful thick, dark green glass. Vessels that have a particularly high dome are poured higher to accommodate this as they will only burn to the top of the wick base. Each candle will have ten ounces of soy wax from either the bottom of a flat bottom vessel or the top of the punt in a candle with a kick-up.  Some enterprising customers have even poured the remaining wax into a wax / oil burner to really finish the extra wax off!  
All of the punted bottoms have a dust-cover or card explaining the two different vessel bases. This includes that there will be some wax remaining in the Punted candles and that it will stop burning a couple centimetres from the top of the punt, but they will still have the same 50+ hour burn-time as the flatter bottom candles.