Attached there is a table that can be of help to the user in the construction of a coil that has a correct thermal flow.

This tool can help you find the right heat flow for those who own a mechanical or semi-mech box mod. It goes without saying that for those who use boxes that allow you to adjust the power output or even the temperature, this table is not fundamental.

This table should be used as follows:

The central boxes show the mm^2 of vaporization surface of a resistance having the specific characteristics of spires, wire diameter and coil diameter. The number itself is not relevant for an average user for the purpose of building his coil. On the other hand, it is relevant what the above number corresponds to, i.e. a certain heat flux (which is here expressed for convenience through the relative color that can be seen in the smaller table).

The initial project from which the model of the table derives, and above all the formula used to derive all the others, were taken from an Italian vaping forum (to be precise, this thread opened by @Igiit, which I thank for his extremely precise work).

For error reports, please write me below.

Thank you!

This tool can help you find the right heat flow for those who own a mechanical or semi-mech box mod. It goes without saying that for those who use boxes that allow you to adjust the power output or even the temperature, this table is not fundamental.

This table should be used as follows:

- First of all, consider the part that deals with the diameter of the coil you want to make. This value is decided by the user, based on the size of the vaporization chamber of his atomizer (for example 1.5 - 2 mm for a small MTL atom, 2.5 - 3.5 mm for a large DTL atom) and other factors.

- Look at the column corresponding to the diameter of the wire supplied by the user.
- You choose the temperature at which you want to vape (in relation to the characteristics of the liquid and personal tastes) by looking at the boxes colored with the respective color.
- The number of spires to be made, with that specific wire, will thus be on the left to obtain the selected temperature.

The central boxes show the mm^2 of vaporization surface of a resistance having the specific characteristics of spires, wire diameter and coil diameter. The number itself is not relevant for an average user for the purpose of building his coil. On the other hand, it is relevant what the above number corresponds to, i.e. a certain heat flux (which is here expressed for convenience through the relative color that can be seen in the smaller table).

The initial project from which the model of the table derives, and above all the formula used to derive all the others, were taken from an Italian vaping forum (to be precise, this thread opened by @Igiit, which I thank for his extremely precise work).

For error reports, please write me below.

Thank you!

#### Attachments

Last edited: