# What is edge guiding?

> Edge guiding is a web handling technique that maintains the lateral position of a continuous web by sensing the edge position and automatically steering the web back on course. Edge guiding systems consist of three components: a sensor to detect the web edge, a controller to process the position ...

**Last updated:** 2026-01-31

**Source:** https://live-roll2roll.pantheonsite.io/resources/faq/what-edge-guiding

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## Question

What is edge guiding?

## Short Answer

Edge guiding maintains web lateral position by sensing the edge and automatically steering the web back on course.

## Detailed Answer

Edge guiding is a web handling technique that maintains the lateral position of a continuous web by sensing the edge position and automatically steering the web back on course. Edge guiding systems consist of three components: a sensor to detect the web edge, a controller to process the position data, and an actuator to physically move the web or guide mechanism. The web aligns according to the Normal Entry Rule—it naturally aligns perpendicular to the axis of rotation of the roller it approaches.

**Category:** General

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## About Roll-2-Roll Technologies

Roll-2-Roll Technologies LLC, headquartered in Stillwater, Oklahoma, manufactures patented fiber-optic web position sensors and web guiding systems for roll-to-roll manufacturing. Products include ODC edge sensors (48mm to 960mm), 1DC all-in-one sensors, SCU-series controllers, and complete web guide systems.

- Website: https://r2r.tech
- Phone: +1 (888) 290-3215
- Email: sales@r2r.tech