I have three mech mods now (Hcigar clone Sentinel M16, Hcigar clone King, FT clone Launcher V2) and have zero interest in getting any VV/VW mods. I love the rugged simplicity of mech mods, and can control performance by how I build my coils. I honestly don't understand why people depict running a mech mod as unsafe or rocket science... it is really pretty easy (at least IMO) but then again I have 28 years of electronics/engineering experience and Ohm's law seems as natural to me as breathing... so running my mechs with 100% reliability, safety and performance has been simple, safe and fun so far.
Some pointers for newbies:
1. Know Ohm's law. Use an Ohm's law calculator online if you have to (just google it). This is really simple math.
2. Have a multimeter and learn how to use it properly. If you don't have one, get one. They range in price, but even the cheap ones are good enough to add to your Vape Kit. Harbor Freight has them for under $10. A small but necessary investment. Youtube has lots of videos showing how to operate it.
3. Know your battery current limitations. Example: Efest 18650 2000 mAh batteries have a 10A limit. If you don't know your battery current limits, search these forums or use google. With a little work you can find this info easily.
4. Now it's time for some simple math...we need to determine what 80% of your battery's limit is. let's call this the "do not exceed current threshold" Example: with a battery rated for 10 Amps, 10 amps x 80% = 8 amps... so you do not want to exceed 8 amps in your build. This gives you plenty of safety cushion just in case your multimeter gives you false readings, your battery was made wrong at the factory, you screw up your coil build, or just to have peace of mind. Easy.
5. More simple math. Calculate the lowest resistance you can use while staying under your "do not exceed current threshold". You can use your online ohm's law calculator, maximum battery voltage number, and some resistance estimates to determine what any given resistance will produce for current. Remember, you are trying to get you close (but not over) to the "do not exceed current threshold". Example: The Efest 18650 battery comes off the charger with a maximum of 4.2 volts. Using a 0.6 ohm resistance, you will get 7 amps current ( 4.2 volts divided by 0.6 ohms = 7 amps) which is safe, since 7 is less than our 8 amp "do not exceed current threshold". Using a 0.5 ohm resistance would push us over the threshold (4.2 / 0.5 = 8.4... 8.4 > 8 = potentially unsafe). So, now we know that as long as our load ("topper", atomizer, RDA, RBA, carto, whatever) is 0.6 ohms or more, we are HIGHLY unlikely to have any problems with our battery going into overload.
6. Understand this: There is NO REQUIREMENT to go under 1 ohm to make good, flavorful, voluminous vapor. I get all the taste, throat hit and vapor I need at 1.4-1.8 ohms. At these resistance levels, any reasonable battery will have a long/safe/productive life. If you simply HAVE to try sub-ohm vaping, stay above your "do not exceed amps threshold" as described above and you are still pretty dang safe.
7. Go and build some coils, then confirm their resistance with your multimeter. Experiment and have fun with your gear. I use 28 gauge Kanthal for everything, just personal preference. Google and youtube to your heart's content to learn how to build, install, wick and test coils. You will quickly learn how to identify and correct shorts, opens, hotspots, etc. Get your hands dirty and enjoy yourself.