Living in the US, good suppliers of NiFe wire (of any type) appear to be somewhat sparse, and I prefer not to order from overseas if I can help it - just because of shipping costs and how long it takes to receive your order. (Sometimes the currency exchange rate can be a negative as well.) My interest in NiFe30, and similar wire, is for TC MTL builds in suitable RTAs - like my Kayfun Mini V3 clones, Digiflavor Siren, Serpent Mini V3 and Augvape Merlin. None of those are perfect for TC vaping, but I'm a MTL RTA guy, and there aren't all that many good RTAs available for my needs. I just ordered one (all anyone appeared to have left in stock) SS 22mm Digiflavor Siren, that holds 4ml of juice. They are well reviewed (even in TC mode). I'm very hopeful it will workout well for me, but I like my other RTAs as well.
To go along with my burgeoning interest in MTL TC, I just ordered 2 spools of
Resistherm NiFe30 wire from
Dicodes USA. It's a little expensive at $22 per 10m spool (about 30ft.?), especially considering S&H is about $7.50 - which is why I ordered 2 spools instead of one. I had also considered
Reactor (NiFe) Wire from Vape Vine, which would've been $24 for an approximately equal length of NiFe wire (two 15ft. spools equaling about one 10m spool of Resistherm). Shipping would have been free on orders over $25, so I probably would've got 3 spools of Reactor Wire (45 feet) for $36.
I may try that wire later, but it doesn't look all that different in performance for my needs when compared to Resistherm in Steam Engine, so for now the Resistherm seemed a better choice. I'm planning on doing 7-8 wrap 3mm ID builds with the 28 gauge Resistherm NiFe30, which would workout to about 0.35 to 0.40 ohms resistance. I think that'll be fine for (relatively low power) TC MTL lung vaping on the above mentioned RTAs, but please let me know if you think I'm wrong about that. I haven't checked what the sweet spot resistance for Resistherm NiFe30 should be yet. It might end up being something a bit lower, but I think I'm close.
The build area is generally small on these MTL RTAs, so there isn't a lot of room for many spaced wraps. I usually do a very similar build with 26 or 28 gauge SS 316L wire, using either a 2.5 or 3mm ID, which works out to a resistance of about 0.50 ohms. I had poor TC luck trying to use above ohm SS 316L builds, but I haven't really tried builds in the 0.60 to 0.80 resistance range yet - which should work a bit better.
Using my iStick Pico 75W I have trouble with smooth TC power delivery when using SS 316L wire. Because of that, I ordered a
3D printed Rebel DNA75W 1x26650/18650 box mod from the UK a week ago, just because I've never had a higher end mod before and want to try one out, but still want the device to be relatively small and light. I'm hoping the DNA75 board will do better smoothly delivering TC power to SS 316L builds, but I think I can do better on either of these box mods using Resistherm NiFe30. The UK based
Stealth Vape NiFe30 looks like it wouldn't be all that suitable, as many more wraps of the stuff would be required to get a resistance level I think would be appropriate for my needs. Any suggestions on what sort of build I should be shooting for when using Resistherm for TC MTL vaping in a MTL RTA?
