V2

Piercing Angle & Depth Guide: User Guide

How entry angle and tissue thickness decide the length and direction of a piercing channel, and how to use each part of the tool.

A free reference for trained body piercers and informed clients. It shows how the entry angle and the tissue thickness decide the length and direction of a piercing channel, and why a tilted channel makes jewelry sit unevenly.

Published by Poli International. Live tool: https://poliinternational.com/piercing-angle-guide/

This guide is a reference. It does not replace hands-on training, and it does not decide whether a piercing is suitable for a particular person.

Choosing a placement

Pick a placement from the buttons (ear, facial, body and genital groups), search for it by name, or click a point on the 3D anatomy model. Recently viewed placements appear as quick links.

Angle visualizer

A cross-section of the tissue with the bar and both discs drawn on it.

Tissue thickness and channel length

Enter the measured tissue thickness with the slider or the 0.1 mm fine-tune stepper, or pick the thin, typical or thick value for the placement. The channel length is:

channel length = tissue thickness / sin(angle)

At 90° the channel equals the tissue thickness. Any tilt makes it longer.

Starting jewelry is longer than the channel to leave room for swelling and is shortened once swelling settles. The tool does not calculate jewelry lengths; it links to the Jewelry Size Visualizer for that.

Placement reference

For each placement:

Paired piercing symmetry

For pairs (lobes, nostrils, eyebrows, snake bites, nipples, ear flats):

Compare mode

Show two placements side by side: angles, tissue ranges, channel depth, typical starting jewelry, healing time, clearance, hazards and refusal criteria. The comparison can be printed.

Studio house standard

Record your studio's preferred starting gauge, jewelry style and marking notes for a placement. It is saved in this browser only and shown on the printed sheet.

Notes, printing and export

Settings

Privacy

Everything runs in your browser. Nothing you enter is sent anywhere; preferences stay in local storage and notes in session storage.

Use the tool

Open the Piercing Angle & Depth Guide: User Guide. Everything runs in your browser; nothing you enter is sent anywhere.