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Maestro

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If you're using juice Calculate, that's what I use and I think it's better than Ejuicemeup. It even has the nic, PG and VG weights already figured out for you.
What's the advantage of mixing your DIY juice ingredients by weight?

I have always mixed using volume percentage and never had any problems ... and reason to change to weight measurement?
The biggest advantage to mixing by weight is no cleanup. All of my bases and flavors have nozzles on them so all I have to do is drip them in. Tare to zero and add......tare to zero and add......etc. Even when I didn't have nozzles on all of them, I'd use a pipette and throw it away.
 

Maestro

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Yes, you can set the weights for each of your liquids. You can easily find out the weights of your PG, VG and Nic. The calculator calculates by volume and then displays the grams to use based on the weight you've entered. I just use 1 gram/ml for the flavors. In ejuicemeup there's a grams set option. In the juice calculator you can set it for each liquid.
 
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IDJoel

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I use recipe calculator and it just says by ml not weight (I lie it does by drops) too damn bad it can't figure that in automatically based on weight
@HotRod19579 's Juice Calculator: New Calculator to try does have a weight/grams option. Tools -> Options -> Recipe defaults: make sure the "Don't show grams" box is not checked. Looks like this:
upload_2016-11-22_3-17-35.png


Then, while still in the "Options" window -> General: and you can select "Grams" (or "ML's" or "Drops") and it will display in bold the appropriate column so it is easier to follow. Looks like:
upload_2016-11-22_3-27-3.png


Any default weight values can be adjusted in the Ingredients window:
upload_2016-11-22_3-32-15.png

What's the advantage of mixing your DIY juice ingredients by weight? I have always mixed using volume percentage and never had any problems ... and reason to change to weight measurement?
My personal opinion is that it really boils down to personal preference. Some find it easier/faster through less/no clean-up, some have more confidence in it, and I mix by weight because I'm old and my eyes are lousy. Trying to get an correct reading with all those little tiny lines (graduations), and my crummy eyes began to really bug me and was beginning to make mixing a chore instead of fun. Now I use a scale with a nice large back-lit display and all is good again.
Yeah I'm the same way and that's what I use but it seems like the numbers are low when I for example want to mix a 10 ml it seems like it's never really ten but lower. Is there a setting where I can change the default?
If you are referring to when mixing by weight; I imagine that is largely due to your VG weight having a value of 1.0 grams instead of a more appropriate 1.26 grams. The more VG you have in a recipe; the more you will be short. If you pour 1.0 grams of VG expecting 1 milliliter you will be short about 21%. So, if you are making a 10 mL batch, at a 50PG/50VG ratio, you will only have about 8.95 mLs of finished product.

Of course, the other ingredients will influence the final amount too but to a much lesser degree. That is why most people will input/adjust specific values for their VG, PG, and nicotine (in the carrier of choice).

Also many (please note I did NOT say "all" or even "most") leave their flavor weights at 1.0 grams. There are several reasons for this: values are not always known and I have seen PG flavor concentrates range from 1.069g to 0.935g. Likewise, unless you are going to verify/re-establish the current weight/volume every time you order and reorder an ingredient, you are still ONLY using an average.

And most importantly to me is the issue of repeatability and common understanding/communication. If I am mixing only for myself, and I have no intention of ever sharing my recipes with another soul, it really doesn't matter what I do as long as I can replicate the results. The problems start to arise when I try to share my recipe with someone else. If I am using a value of "X," but you are using a value of "Y," we are never going to come up with the same product.

This is why I will never even look at a recipe that is offered only in drops; there is just way too much of a potential variable for me to be willing to invest my time.

However, if we all agree the value of flavor X = 1, we will all be making it the same way. Correctly, or incorrectly, we are still making it the same. That's my rationale anyhow.:D

In closing; I am NOT saying this is the right way, the only way, or even best way. I am only saying that this is my understanding at this time. There are plenty of other folks with plenty of other ideas that are just as valid as mine. Ultimately the goal is finding what works best for you!
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jambi

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which ones? I use juice calculator it has the little beakers as the icon

In the Ingredients menu, you can set the SG of your ingredients, set up defaults, etc. If you click that circled box (and please excuse my really badly freehand drawn circles) that says "calculate weight based on...) it'll use the PG default weight of 1.03. Personally, I set a default of 1.00 for all PG based flavors, simply because in RL they aren't all 1.03. If you look at a list of any manufacturers SG's, you'll see that they vary from 0.93 to 1.08. Using the 1.00 constant makes the measuring math simple and keeps me from having to look up and enter SG's for every flavor I own. Also, 1=1 appears to be the standard used by everyone whose recipes I might want to try...

For my VG flavors I click the calculate button. This juice calc defaults PG to 1.036 and VG to 1.249. It's a great calculator, the best actually, once you've figured out how to use all its features.

Capture1.JPG
 
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IDJoel

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And curse you @IDJoel, for your better explanation and awesomely perfect highlighting! :)
Honestly I thought your hand was steadier (is that a word?) more steady than mine.:lol: Also, good point on the "calculate" button option. @HotRod19579 has truly given us a terrific tool!
 
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DaveP

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Mixing methods are for the most part personal choice as long as the finished product is accurately measured. The only thing I wash out at the end of a DIY session is the dropper I use to put nic in the bottle on the scale. The flavors are in dropper bottles. VG and PG are in condiment style clear HDPE bottles.

To be honest, I've never tried mixing by volume. After watching this video demonstration of mixing by weight I never tried the volume method.

 
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