Plastic melting carts = poison

[Vaporer]

Well.......that many people cannot be wrong.
Attys do vary a little 3.2-3.4 ohms.....one that came out of the factory say @ 2.8ohms would surely run hotter.

It may be the fact that I mod my carts and attys too (sometimes), for more airflow. I like an easier draw more like an analog. So.....If I'm drawing more cool air in, mine don't run as hot.

Insert light bulb coming on < here >

[Ralph Hilton]

My 510 atties from TW are around 2.3 ohms measuring the current and voltage on the atty rather than resistance.

[Robert]

Originally Posted by Pumaman

I assume you have a 510? If so, you need to align your cartridges so the flat edges don't sit on the edges of the bridge. Just use search, the details are posted here somewhere.

You Win- This is the correct answer!!!

Very important info- for all new to vaping. I made a video that explains this- IMO this is the most important info for 510 users.

At 5 and 6 volts I also trim my carts 1/8 in. to avoid this.

Also if the want to align easily- see the dots on my atty and cart in my sig? Paint them on. That is how!

[Kate51]

I've had to trim most of my carts, 801's. Once I get them they're all in the box, so don't ever remember which ones came from where. But I use the white-out to put a dot on the top-side of the atty so I don't have to go get my glasses everytime I juice up. 801 atty's are harder to see into for me.

[PaulZ]

my 510 had one cart melt after a vaping session - which i normally don't do. It only went down a tiny bit, and none of my other ones have melted. I'll probably trim the carts a bit anyway to improve air flow :P

[Vaporer]

Ralph,

Thats low and is putting out abt 7 watts! Battery life would be very poor. I remember Nuck saying he had some 510's that were 2.? (low)ohm 510's. Since they all use the same 3.7v from the factory, there is no reason for them to be that low. It sure will generate more heat.
I dont have any TW 510's, but my others from abt 5 sources are all in the 3.2-3.4ohm range. Resistance can change with heat, normally it gets higher.
Any chance of getting a static cold ohm reading on one of those TW's?

Robert, running something that was designed for 3.7v on 5 & 6v I'd expect some overheating. Acrolein can be converted from VG at 280*C (536*F).
I'd run my PV as cool as possible.

Kate, good idea marking your trimmed ones.
No melted or burnt plastic should ever be inhaled. Anything you can or have to do to avoid it should be implemented.

[Scottbee]

Originally Posted by Vaporer

Ralph,

Robert, running something that was designed for 3.7v on 5 & 6v I'd expect some overheating. Acrolein can be converted from VG at 280*C (536*F).
I'd run my PV as cool as possible.

Are you sure that you can create Acrolein from glycerol by simply heating the glycerol at atmospheric pressures? I thought the process was more complicated than that.. and/or required a catalyst.

[Kate51]

Originally Posted by Scottbee

Are you sure that you can create Acrolein from glycerol by simply heating the glycerol at atmospheric pressures? I thought the process was more complicated than that.. and/or required a catalyst.

I know there have been many posts about acrolein formation, will have to go back to look for them, I do believe it was in a MODDING thread....consensus is the atomizers do not produce sufficient heat for acrolein formation. But good question to persue for sure...do not harm. If I find the posts will paste a link here.

[Scottbee]

Originally Posted by Kate51

I know there have been many posts about acrolein formation, will have to go back to look for them, I do believe it was in a MODDING thread....consensus is the atomizers do not produce sufficient heat for acrolein formation. But good question to persue for sure...do not harm. If I find the posts will paste a link here.

Yeah... I read through quit a few of them. What was sadly missing were posts from real-life chemists (as near as I could tell). I didn't see anybody talk about phase diagrams or any of the other technical details that would accurately describe what can cause glycerol to convert to acrolein.

At first blush it would appear to require super-heating.... which isn't readily done at standard atmospheric pressures.

[Vaporer]

Well.......I've seen to many sources like this one and I'd rather be safe than sorry.

"When Glycerol is heated to 280 °C, it decomposes into acrolein. Acrolein may also be produced on lab scale by the reaction of potassium bisulfate on glycerol (glycerine)."
Acrolein: Facts, Discussion Forum, and Encyclopedia Article

Attys at 3.7v are pulling approx 1A. So, you can use this CURRENT TEMPERATURE TABLE for the temp.
Nichrome Wire

We've all seen our atty coils glow red. Here's a color temp table.
Metal Temperature by Color

The amount of airflow will have effects on the temp, but as we all know many attys develop a hard draw with little air flow.
Running an atomizer designed for 3.7v at almost 2x the voltage is quite a bit hotter.

If you want to say its safe and not happening, that's your choice.