Wassup yall first post here on ECF. I plan to make an unregulated dual 18650 box mod out of an old cigarette tin. This will be my first DIY experience and i was wondering what switch would be best to use. I usually vape around .16 - .3 ohm but i might even go a bit lower if i had a parallel box mod. so im worried about the amp limits in switches and the wiring. What gauge stranded copper wire can handle up to 30 amps of current maybe higher? And is there even a switch that can hold its ground under a 30+ amp load without damaging or heating? I found a 15 amp antivandal but its illuminated and id rather it not be.
DIY Box Mod Switch and Wire Gauge
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Hello and welcome! I don't see many modders over here in the New Member Forum. You will be able to post over in the modding forum once you have the required 5 posts and the server updates at :25 past the hour.
Thank you! I'm workin on getting those posts in! I will repost in the modding forum once i can.
You could use high temperature silicone wire, then you can go small 16ga. If you are using regular wire, I'd go 14 or 12ga.
Quick search on ebay for "30a spst momentary switch"
Quick search on ebay for "30a spst momentary switch"
Well technically, since I have built some mods, I am a modder. I don't build anything fancy though. I did make my own mechanical switch for a mod that I finished last week. It turned out to be a decent mod. It vapes almost as good as my MVP but doesn't have any of the
fancy doo-dads.
Welcome to ECF!
fancy doo-dads.
Welcome to ECF!
thanks for the tip on the silicone wire will use 14 AWG it is rated to handle 60 amps. but the ebay link sends me to more 5 amp vandals
if anyone has had experiences with different antivandal switches on an unregulated mod at or below .2 ohm let me know! i want to know how they perform over time and if they get hot when chain vaping. since it will be unregulated the switch worries me the most as it will be under the most stress with its low amp rating.
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I seem to have found a 60 amp anti vandal on eBay thanks to everyone for helping me I now know where to get everything I need for this little project!
ebay search for 12mm push button switch and you can find some nice flush mount ones that can handle the wattage
cant post link
cant post link
I've been doing some research on switches for mechanical mods. Switches are usually rated for AC voltage. Just because it says it will handle 15, 20 or more amps AC doesn't mean it will handle high amps in DC voltage.
DC voltage is constant where as AC voltage is delivered in cycles. That's why you see AC current described as 50/60 cycles/sec.
At high amps, DC voltage can heat up the contacts causing them to burn up or weld themselves together.
One way to get around this is to use a mosfet transistor.
DC voltage is constant where as AC voltage is delivered in cycles. That's why you see AC current described as 50/60 cycles/sec.
At high amps, DC voltage can heat up the contacts causing them to burn up or weld themselves together.
One way to get around this is to use a mosfet transistor.
the mosfet does work and thats what I used in my original box mod but there will be a voltage drop across it. P channel fets work best for lowest voltage drop
From what I have read in the Modding Forum here, modern mosfets have minimal voltage drop.
the N fet's have a higher voltage drop because your gate voltage is roughly the same as the drain voltage so I think*** it doesnt fully open. If you do low side switching with a pfet you have a voltage drop equal to current X internal gate resistance, which is typically very low. However 4.2v / 1 ohms coil = 4.2 amps 4.2 amps X a very small resistance = you still get a voltage drop.
How much voltage drop are we talking on a 3034 N-Channel Mosfet chip? That seems to be the one I see on wiring diagrams; figured it would have to be pretty low if everyone is using it. Seems like box mods are made for the subohm freaks out there.
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I ordered a 3034 MOSFET and I have very little voltage drop , I did use 12ga solid copper wire half hard and everything came out great I'm running dual 26650 and I go as low as .07 and no heating up on the switch or box
Ive only built 4 box mods so im no expert but if youre worried about the switch throw a mosfet in for sure as far as voltage drop worries if its a big deal wire the batts in series
Theres actually a sweet site for supplies modmaker.com they have vv/vw chips almost everything your heart desires for a diy mod
Hey, i've been using a 16mm anti vandal momentary push switch rated at 3amp on an unregulated duel 18650 box mod for about 4 months now. since it was my first mod, i didn't use a misfit etc and the switch has worked perfectly ever since. I don't hold the switch for more than 5 seconds at a time and the switch never gets hot! I'm no expert but i do use 30amp sony VTC4's and i have never had a problem. i have built at .15 and still works fine but i don't really need to go that low so typically i stay around .5
I would suggest using a mosfet box mod so that you can use pretty much any switch you want. Good luck
I would suggest using a mosfet box mod so that you can use pretty much any switch you want. Good luck
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