How to easily build a Variable Voltage Dual 18650 Wood Mod

by Sonar505
February 5, 2013
The author's views below are his or her own and may not reflect the views of Ecig Advanced

As promised. Here is a tutorial for building a VV wood mod. Using a OKR-T 6 amp switching regulator, Voltage display and dual 18650 batteries. This one will be referencing back to the other tutorial I posted before for the Majority of the basic build. So If you have not read it (What the heck is wrong with you ) here is a link to that post.

How to easily build an Inexpensive 3.7 volt Wood Mod

It may Seem very large and complicated to some people. But if you give it a try I think you will be very happy with the performance.

Here is what we are building




Parts List needed

Went with Alder this time. Listed where I got the parts from.

Once again feel free to substitute for parts and tools on hand.


Mad Vapes

510 Connector

18650 Batteries 2 at least. Either Protected ICR’s or IMR’s

Voltage Display – Only if you want to mount a outside display on the mod. It can be monitored with a screw on display or multimeter. But it is much easier with it already on there.

Any type of switch you want. I liked the look of this rounded flush one and works great.



(2) Pairs Battery Spring Plates – Battery Spring Plate
Radio shack

PCB- Printed Circuit Board They have a few get the one that has a mix of 2,3,none, and continous connections between holes they sell for around $2.50. Or if you are able to, make your own PCB.

Small magnets If needed. Once again so far I have not needed magnets to hold door on.
Digikey –

OkR-T Switching Regulator comes in 3,6, and 10 amp sizes. I ordered a 6 amp for this one and a 3 amp for another mod. Very happy with both. Batteries last a lot longer than linear regulators.

A 200 ohm Trimmer/Pot

This is the resistor I used for my build based on the first schematic I seen. But it has been pointed out to me that this one is out of the specifications from the manufacturers datasheet. They recommend a 220 ohm resistor which will limit your max voltage to around 6 volts. Which is what I now recommend. So the 2nd link is for a 220 ohm.

A 200 ohm resistor –

A 220 ohm resistor –



Home Depot

1/4″x 1 1/2″ x 24″ Hobby Board – I went with the alder on this one.

3/4″ screen – once again you can use any scrap piece you already have.

20 to 22 gauge wire
Tools Needed Same as before See Previous Tut

How to easily build an Inexpensive 3.7 volt Wood Mod

Cuts needed – Hobby Board

(4) 4 1/4″ pieces look for interesting patterns and label front and back. Others label left and right.

(2) 2″ pieces label top and bottom

(1) 1 1/2″ Label Angle piece

3/4″ screen

(1) 1 1/2″ piece label support

(1) 1 1/4″ piece label U

(2) 3″ pieces label U

Once again feel free to substitute what you already have available for what is listed here.
First steps:

How to easily build an Inexpensive 3.7 volt Wood Mod


This is where using a 220 ohm resistor instead of a 200 ohm will show different your top Volts will be Around 6


Here she is with her happy family Big Daddy,Momma,The Twins,and Baby Stealthy.



Hopefully I covered everything you need to make your own. But if you have any questions or see any safety concerns please fill free to post. Any and all Comments and or critiques are greatly appreciated. Also if you do make one please post a picture for me.

I find myself reaching for this one most of the days and take it everywhere. Depending on the MAh of the batteries it last me 2 to 3 days of continuous Vaping Bliss. (A Switching Regulator like the one used here is a lot more efficient than a Linear Regulator which wastes power in the form of heat so your batteries last longer).

Enjoy and Happy Vaping!


34 Responses to “How to easily build a Variable Voltage Dual 18650 Wood Mod”

  1. slap_maxwell on February 5th, 2013 6:57 am

    Another crackin’ good tutorial. According to the tracker, my DNA20D should be here Wednesday; can’t wait to give it a go in one of your designs!

  2. Chad on February 5th, 2013 9:14 am

    Your tutorials rock!

  3. Ralph Tirella on February 5th, 2013 10:45 am

    how long did it take you?

  4. Sonar505 on February 5th, 2013 11:03 am

    I can usually knock one out on a weekend with the glue and poly drying times. If I have the materials gathered in front of me. Once you do the first one it becomes very easy.

  5. Amanda on February 5th, 2013 1:55 pm

    That is so pretty! Very nice!

  6. Amanda on February 5th, 2013 1:55 pm

    Have you done any others with other types of wood?

  7. GhOsT DoGg 79 on February 5th, 2013 2:00 pm

    Agreed, that is an awesome job man!

  8. GhOsT DoGg 79 on February 5th, 2013 2:01 pm

    Yes….have you done other woods, or made other ones?

  9. John "Shub" Fellhoelter on February 5th, 2013 4:07 pm

    That is pretty slick. I might have a new DIY project in the near future.
    Don’t tell my wife

  10. brock pollard on February 5th, 2013 4:18 pm

    awesome bro

  11. Aaron on February 5th, 2013 5:41 pm

    looks like a fun project.

  12. jimpo42 on February 5th, 2013 6:22 pm

    Very nice tutorial again! I know you usually stain your boxes but there is a method for sealing them called CSA sealing which is pretty much sealing the wood with super glue. A lot of people I know use this to seal wood scales on straight razors. If you like the natural look of the wood it makes a very good waterproof seal and won’t discolor like a lot of the wood sealers will.

  13. michellebastin on February 5th, 2013 8:38 pm

    Thanks I will have my hubby work on this 🙂

  14. robowvape on February 5th, 2013 10:31 pm

    another great in-depth tutorial, i wish i had access to the tools to do this, it would be a lot of fun and a great piece for a very modest price…

  15. Courtney on February 5th, 2013 11:33 pm

    Beautiful mod! great tutorial!

  16. tiffjamesnjj on February 6th, 2013 2:51 am

    nicely done!
    think i might but this off to the side for a bit….
    maybe one day 🙂

  17. Clawfield on February 6th, 2013 3:19 am

    Thanks I will be trying this later 😀

  18. The Crooked One on February 6th, 2013 12:40 pm

    If Ionly had the time…

  19. morrinb on February 6th, 2013 5:24 pm

    Awesome tutorial. Thanks for sharing!

  20. Johnathan Brown (Sepsis) on February 7th, 2013 12:19 am

    This is a great walkthrough. However, I also suggest you add two switches. one coming from the batteries directly as a master on/off. Then, I suggest wiring another one up from the voltage meter so that you can toggle between direct line in from the battery so you can see battery voltage, and the other side wired through the okr so you can see set voltage. Dunno if you’ll have enough room to fit it in the box though.

  21. Holden on February 7th, 2013 6:18 am


  22. Flux83 on February 7th, 2013 7:26 am

    This is great I was wanting to build something like this. Thanks and great job.

  23. RCO67 on February 7th, 2013 1:16 pm

    Thanks for taking the time to share this project. The pics make it easy to follow.

  24. saboinia on February 7th, 2013 10:42 pm

    prinTed ouT for fuTur rfrnce

  25. Karla Lyle (MsV8PR) on February 8th, 2013 12:58 am

    I have always wanted to make my own VV Mod. i would love to try to make a bottom feeder. 😉

  26. michellebastin on February 8th, 2013 5:05 am

    Ok so I showed this to my husband so he could build me one and he said that’s to much work I’ll just buy you one lol

  27. starlyte on February 9th, 2013 9:42 pm

    Really nicely done, clearm and beautifully illustrated, so I thank you from the bottom of my heart. I really needed a such clear tutorial, to get things straight and this is excellent. 20/10m if I could 😉

  28. Anthony on February 11th, 2013 12:04 am

    I have GOT to build one of these!

  29. bybees3 on February 16th, 2013 5:59 am

    Cool beans, man. Thanks for the info.

  30. bybees3 on February 18th, 2013 5:57 am

    Pretty cool. Have to try that sometime.

  31. BuzzBait_vapes on February 20th, 2013 4:51 am

    Very detailed and crystal clear tutorial, You convinced me to make one this weekend 🙂
    Thanks for taking the time to put this up for us!

  32. Chuckss on February 21st, 2013 10:37 pm

    Awesome guide, great attention to detail!

  33. mahjoub on August 27th, 2014 11:13 am

    How to Build A 5 Volt 510 Box Mod

  34. DubalYou on September 28th, 2015 8:38 pm

    Total newb so this may have been asked/answered/explained but in case it hasn’t, I’m interested in building a 50watt mod of my own. I have ZERO comprehension of the science’s involved and very little experience with soldering and electronic reworking. Any chance poster/commentors could advise or direct me to what all I need to purchase? I assume with what SONAR has shared here, I can construct my device. I just, know NOT what component(s) I need to acquire…ANY/ALL help/advice is GREATLY appreciated! Thanks all!

Feel free to leave a comment...
and oh, if you want a pic to show with your comment, go get a gravatar!

61 queries in 0.626