---
type: faq
title: "What is a black mask file and when do I need one?"
description: "A black mask file is an extra file that tells the printer exactly where to apply a special effect such as Raised Spot UV or Metallic Foil. You need one whe"
resource: https://www.4over4.com/faqs/finish/what-is-a-black-mask-file-and-when-do-i-need-one
tags: ["Finish", "faq"]
timestamp: 2026-07-20T18:54:40.856Z
---

# What is a black mask file and when do I need one?

A black mask file is an extra file that tells the printer exactly where to apply a special effect such as Raised Spot UV or Metallic Foil. You need one whe

Part of the **Finish** hub. See [all faq concepts](index.md).

- Page type: faq
- Hub: Finish
- URL: https://www.4over4.com/faqs/finish/what-is-a-black-mask-file-and-when-do-i-need-one