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Half jar testing without fragrance


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I am currently testing out 12 oz. status jars with 6006 ( 100% ) / 6006 ( 85% ) + 464 ( 15% ) using various LX, CD, Eco, and Zinc Wicks.   A lot of chandlers on this site recommend testing with half poured jars with no fragrance when trying to figure out the best wax / wick / container combo.

 

1) If I was pouring a full jar, I would be looking for a FMP on the 2nd or 3rd burn.  Should I be expecting the same rate to a FMP on a half poured jar or will that happen faster when only pouring a half jar.  Is it ok to reach a FMP on  the first 3 hour burn test when only pouring half jars?

 

2) Since I am not testing fragrance / throw, what else should I be looking for when determining the best 2-3 possible wicks + wax combos.  I am assuming in a perfect candle, I would have no mushrooming, no soot, no tunneling, low temp on the glass, minimal catchup, and a reasonable rate to get to a FMP.   How do you ultimately choose between the many combinations that are possible here?  For example, should I always choose the wick that results in a cooler jar and takes longer to reach a FMP?  In my mind, I can imagine chandlers giving each attribute a rating ( soot / mushroom / heat / melt pool ) and then deciding the best based on a score or is this more of a subjective determination that comes with experience?   I understand once I start mixing in fragrance all bets are off, but I would like to limit that test to only a few wax / wick combos if possible.  

 

By the way, I am somewhat referring the approach @Chefmom talks about here:  

 

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The second half, and especially the last third are critical in my containers. I look for a slow melt pool width to the edge that aligns with the width of the container. A 3” wide jar I look for full width pool in 3-4 hours. 

 

More importantly, IMO, is overall melt pool depth. If that melt pool gets deeper than about 1/4”, or 1/2” depending on the size around the edges it’s likely a fail for me. Sometimes it’s hard to see the depth from the sides, especially in colored wax. All soy coconut blends in a tin fail to reach full melt pool sideways, but go completely liquid internally to the bottom. Soy wax gets very sludgy before it turns clear like the typical thing we think of as melt pool. The temp difference of a degree or two is all it takes for sludge to become clear melt pool. 

 

Melt pools are not perfectly flat, some appear shallow, but are a deep “U” in the middle. That too is a fail since the wicks will eventually begin to sag or tip in the pool.

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I don't have a ton of experience with half jar tests, but yes, I expect a full MP much sooner than when testing a full jar. Usually I do a half jar test when I have a new fragrance that I'm not too sure about and I don't want to commit to a full candle of it.

Since I'm tossing my opinion out there, I would suggest doing a pan test if you're testing multiple wicks for performance in unscented wax. There is a great thread in the wax and wick testing section going on right now. If I can figure out how to do that inserting thing, I'll link for you.

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