Wicks for Pillars
The most common wicks used in pillars are the flat and square braided wicks. When sized properly, the flat and/or square braided wicks should be able to produce a flame that can consume the wax, without allowing it to drip.

Other Wick Information
Once you find a series of wicks that you like, it is also important to test with your different color and scent combinations. The scent load and color will definitely have an impact on the wick size. A wick that might work in a white/hyacinth candle may not work the same in your burgundy/cinnamon candle.

Another important aspect in terms of the performance of the wick is that the wick must be centered at all times. Wicks that are not centered may cause the wick to lean to one side with the potential to come in contact with the glassware. For best results in containers secure the bottom the wick with glue dots (GD-1) and secure the wicks on top of the container using with the Bow Tie Wick Bar (M-503) or Jar Cap (M504).

With pillars the pins are definitely the best way to ensure that the wick is centered the entire length of the candle. In votives, the M-63-P is definitely worth using.

Conclusion
One final aspect of how the wick will perform is the responsibility of the candle user. It is important that the candle user trims the wick properly during the entire burning cycle. Your instructions should make this clear.

The staff at Candlewic can help you narrow down the selections of wicks that may work, but they will have to be tested in your specific application.