Agreed, I don't measure wire for perfection anymore. I mic it to ensure it's close to the correct gauge I ordered and wind away. I use SE to determine build parameters and don't mind if it reads .0X higher or lower than spec.
Titanium wire, vaping and safety
- Thread starter TheotherSteveS
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Agreed, I don't measure wire for perfection anymore. I mic it to ensure it's close to the correct gauge I ordered and wind away. I use SE to determine build parameters and don't mind if it reads .0X higher or lower than spec.
Thanks, Duane. I agree the Ti02 issue is overblown. Everyone freaks out because IARC labels TiO2 as a "possible carcinogen" even though the literature they reviewed for their assessment clearly shows there is no evidence that TiO2 exposure increases cancer risks in humans. They are basing it off a couple of rodent studies and, I suppose, are being very cautious with their designation as a "possible carcinogen" (which tells us nothing since almost anything is "possible").
I will continue to lightly pulse my coils (to a blue hue) and vape away.
Hi Duane-
On #2, what do you set the TCR to on a DNA200 for a slight dry burn? I have been using 007 which is approximately double the actual TCR and 600F. It will pulse and then stop, burning everything off. I do see about 1 second of slight glowing even in a lit room. Am I doing it wrong...should the TCR be like 0018 or 0017 which is ~half? (I have also had luck pulsing in wattage mode at about 6W.) I kept a coil going for about 2 months but for some reason it burned up -- collapsed in on itself and and broke into two pieces when I used my TI DRY BURN preset on the DNA200 earlier today. I am thinking it was because I accidentally had the resistance locked in the dry burn mode but maybe I need to rethink the TCR thing!
Jack
I misspoke...I set the TCR at about 2x the normal i.e. about 0.007 the same as you and use 250-300C
Balazsk developed the technique and posted it. He used TCR of 0.00725 and the temp to 300°C the coil will be about 600°C.
his settings gives a coil temperature of about 1112F which is a little higher than I think is necessary.
Sorry about the error. 2X TCR is about right. The slightly lower TCR and temp set reduce the temperature of the dry burn somewhat compared to Balazsk's original settings. I find I don't need more than 6-10 watts depending on the wire gauge.
I edited the original to correct my error.
Duane
I misspoke...I set the TCR at about 2x the normal i.e. about 0.007 the same as you and use 250-300C
Balazsk developed the technique and posted it. He used TCR of 0.00725 and the temp to 300°C the coil will be about 600°C.
his settings gives a coil temperature of about 1112F which is a little higher than I think is necessary.
Sorry about the error. 2X TCR is about right. The slightly lower TCR and temp set reduce the temperature of the dry burn somewhat compared to Balazsk's original settings. I find I don't need more than 6-10 watts depending on the wire gauge.
I edited the original to correct my error.
Duane
I am sure this is well known to most, but for noobs:
Rio Grande offers 50 ft. spools for $10. That's the best price I've seen for (USA made) Grade 1 Ti wire. The drawback is they only offer 24 gauge.
Unkamen offers all gauges from 12-32. Their prices vary by gauge (26 AWG is $10 for 35 ft.).
Lightning vapes wants $14 for 25 feet of 26 gauge, but only $10 for 25 feet of 20, 22, 24 gauge. This makes LV the worst of the three in price but still better than the "designer" wire companies.
Rio grande also offers 304 SS wire in 1 lb. spools (640 ft) for less than $30. So, if you are a 304 SS guy, you can have a wire supply to last you to the end of your natural life for just $30.
On the subject of overpriced wire, one funny anecdote is the owner of Craft Vapery (who now sells Titan Wires) made a blog post months ago where he described how to make a Ti build. In that post he said his preferred vendor was Unkamen. Since he started carrying Titan Wires (overpriced designer wire), he changed the blog post to say his preferred vendor is Titan Wires. The funny thing is that he didn't edit his blog post properly. It reads:
Oops. He forgot to take out the "jewelry supplier" comment. It used to read "Our favorite so far is Unkamen." That was one lazy blog post edit.
TL;DR -- Never buy vape accessories like wire and wick from vape shops. Unless you enjoy being ripped off.
Rio Grande offers 50 ft. spools for $10. That's the best price I've seen for (USA made) Grade 1 Ti wire. The drawback is they only offer 24 gauge.
Unkamen offers all gauges from 12-32. Their prices vary by gauge (26 AWG is $10 for 35 ft.).
Lightning vapes wants $14 for 25 feet of 26 gauge, but only $10 for 25 feet of 20, 22, 24 gauge. This makes LV the worst of the three in price but still better than the "designer" wire companies.
Rio grande also offers 304 SS wire in 1 lb. spools (640 ft) for less than $30. So, if you are a 304 SS guy, you can have a wire supply to last you to the end of your natural life for just $30.
On the subject of overpriced wire, one funny anecdote is the owner of Craft Vapery (who now sells Titan Wires) made a blog post months ago where he described how to make a Ti build. In that post he said his preferred vendor was Unkamen. Since he started carrying Titan Wires (overpriced designer wire), he changed the blog post to say his preferred vendor is Titan Wires. The funny thing is that he didn't edit his blog post properly. It reads:
Oops. He forgot to take out the "jewelry supplier" comment. It used to read "Our favorite so far is Unkamen." That was one lazy blog post edit.
TL;DR -- Never buy vape accessories like wire and wick from vape shops. Unless you enjoy being ripped off.
OK thanks. I'm going to stick to Unkamen. I just cleaned one up and came out like new except the wire is gold now..
@druckle I have found that the Steam Engine's Nickel DH profile seems to meet the TCR value of .007036 which is pretty close to your suggested TCR and slightly less than @balazsk. Wouldn't that profile work then for dry burning Ti using 300C or 572F for a temperature setting? I am thinking of loading that CSV into my settings for my Dry Burn DNA200 profile 8.
You can use that profile for dry burning.
300°C will be probably a bit high, I suppose to start at 250°C and increase the temperature a bit if it is necessary.
On DNA200 devices, I have found it best to TURN OFF all preheat settings for your custom "Titanium Dry-Burn" profile. I've added this to my written advise when asked about this topic.
Mactavish
I agree that it's best to turn off all preheat settings for the Ti dry burn procedure. I think it's better to softly approach the temperatures for the dry burn with multiple small pulses rather than hit the coil with a big power spike. I agree completely.
Duane
Yup, I had already turned off the preheating as you all had suggested. Ok, bring it down to a starting point of 250C/482F to start. So you all agree that the Steam Engine's Nickel DH profile is an easy workable solution to tell other DNA200 users for a Ti Dry Burn?
But why use that CSV file in the first place. Simply create a new preset, name it "TI-DRY BURN", and manually enter the TCR of 0.0070? Then you don't need a CSV file at all, and can easily raise or lower it you want.
I use profile 8 for my Ti dry burn (well labeled with flame graphics).....keeping that option a long way away from the profiles I often use with the hope that I won't screw up some late night and accidentally select the Ti Dry Burn profile when I wanted something that wouldn't blow the top of my head off.
Duane
Very true, and I just figured out how to do that within EScribe and save it. lol Unlike my SXM which only takes one TCR value, the DNA200 lets you plot an entire curve so I had to figure out how to do that.
I use profile 8 for my Ti dry burn (well labeled with flame graphics).....keeping that option a long way away from the profiles I often use with the hope that I won't screw up some late night and accidentally select the Ti Dry Burn profile when I wanted something that wouldn't blow the top of my head off.
Duane
Here is the screen I use.
I haven't figured out how to enter text into the profile graphics window. Or graphics either...doh
Ok, I got this .jpg loaded in but it's weird, the "load" window never displayed the image but when I searched it came up. Now I can't find it anywhere on my computer. Whaaaat? Anyway OT
I keep all my screen images in a single folder. Jpegs work as well as PNG's. B&W images, 128x32 pixels.
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