---
product_id: 50417872
title: "Etch Resistant Pen"
brand: "spiratronics"
price: "S/.53"
currency: PEN
in_stock: true
reviews_count: 8
category: "Spiratronics"
url: https://www.desertcart.pe/products/50417872-etch-resistant-pen
store_origin: PE
region: Peru
---

# Vibrant blue oil-based ink 0.5mm precision tip Etch resistant formula Etch Resistant Pen

**Brand:** spiratronics
**Price:** S/.53
**Availability:** ✅ In Stock

## Summary

> 🖌️ Draw your future circuits with confidence!

## Quick Answers

- **What is this?** Etch Resistant Pen by spiratronics
- **How much does it cost?** S/.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/50417872-etch-resistant-pen)

## Best For

- spiratronics enthusiasts

## Why This Product

- Trusted spiratronics brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Vivid Blue Ink:** Oil-based pigment ensures clear, sharp lines
- • **Designed for Copper:** Optimized for direct application on copper boards
- • **Ink Refill Included:** Sustainable use with included refill for long-term projects
- • **Ambidextrous & Portable:** Cylindrical, pocket-sized design for easy handling
- • **Precision at Your Fingertips:** 0.5mm round tip for detailed PCB artwork

## Overview

The Spiratronics Etch Resistant Pen features a fine 0.5mm round tip and vibrant blue oil-based ink designed specifically for artwork on copper PCBs. Its etch resistant formula aims to protect your designs during acid bath etching, making it a handy tool for precise, professional-grade circuit board preparation. Compact and ambidextrous, it includes an ink refill to support extended use.

## Description

An Etch Resistitant Pen, ideal for use on plain copper boards when an acid bath technique is to be used with artwork directly printed and drawn on the PCB. To use the pen, simply press the tip to promote ink flow and apply slow, even pressure in use.Application::Artwork PreparationColour::BlueType::Etch Resist Pen

Review: Worked well for ettching - Works really well on silver
Review: Not etch resistant, just a regular permanent marker. - Not etch resistant at all. It's just a regular permanent marker that could buy from any stationary shop. I have tried it several times with copper sulphate and salt in steel, but it dissolves in the solution long before the etching process has completed.

## Features

- Etch Resistant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0093ZB228 |
| Age Range Description | Adult |
| Best Sellers Rank | 268,769 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 1,410 in Stick Ballpoint Pens |
| Body Shape | Cylindrical |
| Brand Name | Spiratronics |
| Colour | Copper |
| Customer Reviews | 3.0 3.0 out of 5 stars (22) |
| Hand Orientation | Ambidextrous |
| Included Components | Ink refill |
| Ink Base | Oil |
| Ink Colour | blue |
| Is Waterproof | False |
| Line Size | 0.5 Millimeters |
| Manufacturer | Spiratronics |
| Manufacturer Part Number | FW4-050 |
| Marker Type | Permanent Marker |
| Material Type | copper |
| Model Name | Etch Resistant |
| Model Number | FW4-050 |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Pattern | Letter Print |
| Point Type | Round tip |
| Recommended Uses For Product | Drafting |
| Special Features | Etch Resistant |
| Style | Pocket |
| Surface Recommendation | Copper |
| Target Audience | Adult, Kid |
| Theme | Plain |
| Unit Count | 1.0 count |
| Water Resistance Level | Not Water Resistant |
| Writing Instrument Form | Marker Pen |

## Product Details

- **Brand:** Spiratronics
- **Ink colour:** blue
- **Number of items:** 1
- **Point type:** Round tip
- **Recommended uses for product:** Drafting

## Images

![Etch Resistant Pen - Image 1](https://m.media-amazon.com/images/I/21SaVtSNFaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked well for ettching
*by A***R on 1 February 2019*

Works really well on silver

### ⭐ Not etch resistant, just a regular permanent marker.
*by J***Y on 4 August 2014*

Not etch resistant at all. It's just a regular permanent marker that could buy from any stationary shop. I have tried it several times with copper sulphate and salt in steel, but it dissolves in the solution long before the etching process has completed.

### ⭐⭐⭐ Just a regular marker
*by K***S on 25 September 2019*

This is a regular permanent marker that you can buy from any stationers and cheaper, you can buy 10 on Amazon for less than £10. I use these for etching silver in ferric nitrate and they work ok, you can have varying results. Need to check from about 2 hours for design falling off and possibly cleanup peice redraw and etch again.

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**Shop now:** [https://www.desertcart.pe/products/50417872-etch-resistant-pen](https://www.desertcart.pe/products/50417872-etch-resistant-pen)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-04-26*