Tephra 1 Mech Mod Instructions


The TEPHRA 1 Mechanical Mod by VOLCANO is as elegant as it is powerful. Designed in Hawaii, it is machined out of high quality 303-stainless steel and comes standard with a black interchangeable 6061-billet aluminum sleeve.

Built to accommodate an 18650 battery, its copper contacts have been engineered to minimize voltage drop, designed with with changeable sleeves to allow you to change the look and style of your mod in seconds to suit your desires for the day.

Its revolutionary recessed rare earth magnet-firing button gives an effortless feel to the mod’s activation. The grid-like accents on the anodized aluminum sleeve affords users perfect grip while handling the TEPHRA. The top cap and battery cap are made from stainless steel with the top cap featuring built-in airflow channels for increased airflow into the RDA that is used.

Engraved into the sturdy stainless steel body of the TEPHRA is the VOLCANO logo and on the direct opposite side is the individual serial number of the device.

There was no compromising on the components of the TEPHRA 1 to ensure a high quality long lasting and reliable device. The expertly engineered makeup of the TEPHRA mechanical mod will surely maximize the flavor and vapor production of your RDA without sacrificing one for the other.



100% Designed in the USA
Precision Machined 303 Stainless Steel Core
Interchangeable 6061 Billet Aluminum Sleeve
Recessed Rare Earth Magnet Fire Button
18650 Battery Compatibility
Copper Connections
Changeable outer sleeves in a multitude of colors perfect for personalization
Affordable and hard-hitting
Tech Specs:

Diameter: 22.5mm
Height: 94.38mm
Threading: 510
Available Colors: Black (standard with changeable sleeves)
Material: 303 Stainless Steel
Sleeve Material: 6061 Billet Aluminum


Device Anatomy:

Recessed Rare Earth Magnet Fire Button
Battery Tube
Top Cap
Bottom cap
Interchangeable 6061 Billet Aluminum Sleeve
Dual adjustable Copper Center Pin 510 Threaded Connection


Installing a battery into the Tephra 1:

Hold the top and bottom cap of the device.
Twist the bottom cap counter clockwise.
Remove the bottom cap.
Slide the battery (if one is present) out of the device.
(Note: Once the bottom cap is off the outer sleeve can slide of make sure not to drop it)
Insert the Positive end of the battery first into the device.
Screw the bottom cap back on to your device.
If there is an atomizer present on the device, test fire it to make sure everything is in working order.
Note: If you have installed a different type of battery then what was in there or this is the first time you may need to adjust the center pin in the top of the top cap. For more details please see below.


Adjusting the Center pins:

The Top Cap of your Tephra 1 has a dual adjustable center pin. These means with the use of a flat head screw driver you can adjust the height of the pin on both the atomizer side of the connection as well as the battery connection side. The will allow for variances between battery height in different brands as well as the use of flat top and button top batteries. Also when using different atomizers you can raise and lower the pin height so that you get a prefect connection as well as be able to set your atomizers right on the top of the top cap so there is no gap between the atomizer and the device. Giving you a clean streamlined look.

Note: doing these adjustments can take a few times before you get it right but once it is set you should be set until something from the setup changes.


To Adjust the Battery positive pin:

Always adjust the battery positive pin first before adjusting the atomizer center pin of the 510 connection on your Tephra 1 Mod.

First remove any atomizer attached to the device.
You will need to remove the top cap from your Tephra 1 mod. The best way of doing this is to hold the top cap and bottom cap and unscrew which ever cap that will come off first (generally the bottom cap will come off easier than the top, then slide of the sleeve and then unscrew the top cap.)
Once the top cap is removed from the device. Place the sleeve back onto the battery tube and screw on the bottom cap. (this will ensure that the sleeve does not spin once everything is done.
Place the battery you are going to be using into the top of the battery tube with the negative side down.
Now would be a good time to add Noalox to the threads if needed. (See below for more info.)
Screw the top cap back onto the device and see if it needs adjusting.
If the battery rattles in the device when you shake it, you should extend the pin out more so it is in the device securely.
If the top cap will not screw on all the way leaving a gap between the cap and the body of the device you will need to screw the pin in so the cap can screw on all the way.
You are now ready to attach your atomizer and can check the connection there.
Please continue to the next step below....


To Adjust the Atomizer pin:

First screw your atomizer onto your Tephra 1 Mod.
If there is a gap you will need to lower the pin so the atomizer sits flush with the top cap.
If there is no gap, but when you fire the device it does not supply power to the attached atomizer you will need to raise the center pin so it engages the center pin of the atomizer.
Remove the atomizer and adjust accordingly.
The atomizer center pin in the 510 connection of your Tephra 1 mod is reversed threaded. Meaning turning the pin counter-clockwise will lower it's height and turning it clockwise will raise the height of the pin.
Once you believe the pin is where it needs to be, reattach your atomizer and see if it is correct. (You may need to raise or lower it again to get it to where it needs to be).
Once it is seated where you want it and it will fire you are set and ready to vape.
Changing the color sleeve.


Changing the color sleeve is simple and easy. It allows you to customize the look of your Tephra 1 mod to your liking and mood.

To change the color sleeve:

Hold the top and bottom cap of the device.
Twist the bottom cap counter clockwise.
Remove the bottom cap.
If there is battery in the device remove the battery.
Then slide the color sleeve off the Tephra 1.
Slide the new color sleeve onto your device.
Install the battery into your device.
Screw the bottom cap back onto your device.
You are now ready to continue vaping.
Battery safety and Battery charge life.


Understanding Ohm’s Law & How It Applies To Your Vape

Your battery is the most important part of your mech mod build because without it all you would have is a metal tube, a couple of coils and a wad of cotton. So understanding how it is used by your mechanical mod is very important if you want to stay on the safer side of vaping.


The main point that you need to understand when it comes to Ohm’s Law relating to your mech mod battery is this:

If you build a coil that pulls more amperage from a battery than it is rated at, that is when you will get into the danger zone of mech mod vaping. Mech mods do not have a regulating chipset or circuitry that would automatically prevent this from happening, so you have no safety net to fall back on if you don’t realize that you are using more amps than your battery can handle.


Don’t Vape On A Battery That Is Almost Dead

Regulated electronic cigarettes feature low voltage cut-offs that prevent a battery from being drained all the way to empty. But a mechanical mod does not have this regulating factor and will drain the battery until it is completely depleted, which is bad for any battery but especially for lithium based ones.

We suggest acquiring a multimeter so that you are able to check the voltage of your battery. Even without a multimeter, you may already notice a sudden dip in your vapor production due to your battery being depleted of energy. For the best and safest vaping, it is recommended that you pop your battery back onto the charger as soon as it hits 3.6V on the multimeter or even as soon as you notice a drop in your vapor production.


Remove Your Battery When Not In Use

If you aren’t currently using your mod and are on the go, it is best that you remove the battery from your mechanical mod. This will prevent accidental activation in a pocket or a purse that could potentially run your mod to drain your battery and lead to overheating.


Care and Maintenance:

Caring for your device will ensure that it lasts for a long time and that it will always preform just as it did out of the box.


About once a month you should fully disassemble your Tephra 1 and using a qtip, paper towel, and rubbing alcohol, clean all the threads and contacts of the device inside and out.


Once a month (best to do at the same time as the cleaning) Apply Noalox to the threads of the Tephra 1"s body threads. Never apply Noalox to the threads of the 510 threaded connection.



Device not firing:

Check the button assembly and make sure the copper contact is coming up past the Delrin insulator. If not Please contact the RMA department.
Please refer to the Adjusting the Center pins section above. Follow the steps in that section to make sure everything is making proper contact.
Button not working:

Does the button have a very short range of motion?
If so the magnet in the button may have broken. Please contact the RMA Department.
Sleeve spins on device.

To prevent the sleeve from spinning, please loosen the top cap of the Tephra 1. Once the top cap is loose, tighten the bottom cap all the way. The sleeve should then stop spinning. If this corrected the issue then screw down the top cap. If the top cap will now not screw down flush you may need to adjust the positive pin in the top cap. Please see Adjusting the Center pins section above for more detail on how to do this.

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