Candle Making Guide

Choosing the right wick is one of the most important parts of candle testing. Use this guide to choose a practical starting point based on candle type, wax, and container diameter, then burn-test the finished candle before making larger batches.

Important: Wick charts are starting points only. Wax type, fragrance load, dye, additives, container diameter, vessel depth, and burn conditions can all change wick performance. Always test the complete candle formula.

1. Start With Your Candle Type

The candle style determines which wick families and testing approach make the most sense.

Container Candles

CD, ECO, HTP, and LX are common starting wick series for container candles. Final sizing depends on wax, fragrance, vessel diameter, and the full formula.

Pillars & Tapers

HTP and LX can be useful starting series for some freestanding candle formulas. Wax hardness and candle diameter strongly affect the final wick choice.

Gel Candles

Zinc-core wicks are commonly used as a starting point for many gel candle applications because they remain rigid. Use only materials suitable for gel candles.

Wood Wicks

Wood wick performance depends heavily on wax, fragrance load, vessel diameter, wick width, thickness, and construction. Testing is especially important.

Wick Series Comparison

Different wick series respond differently to wax hardness, fragrance, additives, and vessel size. Use this comparison to choose which families to begin testing.

Wick Series Common Starting Uses What to Watch
CD Soy, paraffin, blends, container candles Oversizing can contribute to large flames, soot, or excessive heat.
ECO Vegetable and soy container waxes Performance varies considerably with fragrance and wax formula.
HTP Containers, votives, pillars, and wax blends Compare neighboring sizes rather than assuming one chart size is final.
LX Paraffin, blends, containers, and freestanding candles Harder vegetable formulas may require different testing than softer paraffin.
Zinc Core Gel, paraffin, votives, and selected container formulas Usually not the first wick family tested for many soy formulas.
Wood Wick Container candles and decorative applications Very sensitive to width, thickness, wax, fragrance, and vessel shape.
Soy & Vegetable Wax Wick Starting Guide

Soy and vegetable waxes can require different wick behavior than softer paraffin systems. Begin with a recommended series and compare neighboring wick sizes.

Container Diameter Testing Direction Notes
Under 2.0" Begin with smaller sizes within the chosen wick series Small vessels can heat quickly.
2.0" – 2.5" Compare multiple small-to-medium wick sizes Wax and fragrance can noticeably change performance.
2.5" – 3.0" Common single-wick testing range Test one size below and above your first choice.
3.0" – 3.5" Compare stronger single-wick options carefully Watch jar temperature and melt-pool depth.
3.5" – 4.0" Compare single wick vs. two smaller wicks Avoid forcing one excessively large wick.
4.0"+ Multi-wick testing is often appropriate Use balanced wick placement across the vessel.
Testing rule: The wax brand matters. Two soy waxes can require different wick behavior even in the same jar.
Paraffin & Soy-Paraffin Blend Wick Guide

Paraffin and paraffin-containing blends vary widely by melt point, oil content, additives, and intended application.

Container Paraffin Softer container formulas may require a different wick than harder pillar paraffin.
Soy-Paraffin Blends Treat the exact blend as its own wax system rather than assuming it will wick exactly like soy or paraffin alone.
Pillar Paraffin Harder wax and freestanding candle diameter become important factors when selecting the wick.
Fragrance Matters Different fragrances can change fuel delivery, flame size, and overall burn behavior.
Wood Wick Guide

Wood wicks are not sized exactly like braided cotton wick series. Width, thickness, construction, booster strips, wax, fragrance, and vessel size all affect performance.

Factor What It Changes Testing Direction
Wick Width Changes fuel delivery and flame size Compare neighboring widths.
Wick Thickness Can change heat output and burn strength Do not assume the same width performs the same at another thickness.
Wax Formula Changes how easily wax feeds the flame Test each wax separately.
Fragrance Load Can alter ignition, flame, and melt pool Test the complete scented formula.
Vessel Diameter Changes required heat distribution Wide vessels may require a different setup or multiple wicks.
Trim wood wicks according to the wick manufacturer's instructions and test relighting behavior as well as the first burn.
Gel Wax Wick Guide

Gel candles require materials suitable for gel candle use. Wick testing should consider gel density, vessel size, fragrance compatibility, and decoration.

Use gel-compatible fragrance Do not assume every candle fragrance is appropriate for gel wax.
Zinc-core wicks Often used as a starting family because they remain relatively rigid in gel.
Watch decorations Decorative embeds can influence flame safety and heat distribution.
Burn test fully Check the exact finished gel candle rather than only the wick by itself.
Beeswax & Palm Wax — Use Extra Caution

Beeswax and palm wax can behave very differently from common container soy wax. Generic wick charts should be treated especially cautiously.

Beeswax Hardness, natural composition, candle diameter, and molding style can all affect the wick requirement.
Palm Wax Crystalline structure and specific palm formula can change fuel delivery and wick performance.
Do not copy a wick result blindly. Test the exact wax formula, fragrance level, colorant, candle diameter, and candle style.
Single Wick or Multiple Wicks?

Wide vessels often perform better with multiple smaller wicks rather than one extremely large wick.

Vessel Width Starting Test Direction What to Watch
Under about 3.25" Usually begin with a single wick Flame size, melt pool, soot, vessel heat
About 3.25" – 3.5" Compare one larger wick with two smaller wicks Heat distribution across the vessel
About 3.5" – 4.25" Begin considering a balanced two-wick setup Avoid overlapping excessive heat zones
Over about 4.25" Evaluate two or three evenly spaced wicks Full-vessel melt pattern and container temperature
These widths are general testing directions, not guaranteed thresholds. Vessel shape and the complete formula can change the correct setup.
Wick Troubleshooting
Problem Possible Cause Next Test
Tunneling Wick may be too small, burn cycle too short, or the wax/wick combination may need adjustment. Compare the next wick size and review the full test method.
Large Flame Wick may be oversized or trimmed too long. Test a smaller wick and confirm trimming.
Heavy Soot Over-wicking, excessive fuel delivery, fragrance, dye, or poor airflow. Reduce wick strength and review the full formula.
Wick Drowning Wick may be too weak or the melt pool may be too deep. Compare a stronger wick and review fragrance load.
Container Too Hot Too much heat from wick size or wick count. Stop the test and redesign the wick setup.
Weak Hot Throw Wick, cure time, wax/fragrance compatibility, or fragrance load may be contributing. Do not automatically solve weak scent by increasing wick size.
Wick Testing Rules
Test neighboring wick sizes Compare a smaller, expected, and larger wick whenever practical.
Use the final formula Test with the fragrance, dye, additives, vessel, and wax you actually plan to use.
Repeat multiple burns A candle may perform differently as the wax level drops.
Record your results Track flame, soot, melt pool, vessel heat, scent, and wick condition.
Change one variable Changing several formula elements at once makes troubleshooting much harder.
Reject unsafe results Excessive heat, heavy soot, unstable flame, or damaged vessels require another test.

More Candle Making Tools

Use these resources when developing or testing your next candle formula.

Fragrance Oil Calculator Wax Weight Calculator Candle Cost Calculator Candle Safety Guide Candle Making Guide Shop Wicks Shop Candle Wax