This picture shows a perfect square but the dimensions are 100mm x 70 mm [ For 'murica boys thats... 4 x 2 3/4 inches ] approx

the PC material was 100mm x 70mm as stated. As I recall, they offered several different sizes and I suppose the photo was of PC board of the type they sold.

what type of substrate was used in the production of these boards?

The description now indicates that these are FR-4 boards.

Is this what i need to replace pad where i used braided copper to remove solder and it removed all of it?

This item is a blank circuit board - it's solid copper on one side and nothing on the other. It wouldn't be a suitable replacement for one pad on a circuit board, but it could be used to make a new one.

Has anyone used this to create etchings for intaglio printing?

SORRY CAN'T ANSWER THAT..... I ONLY USE COPPER CLAD BOARDS TO MACHINE THE TRACES AND COMPONET HOLE SIZES ON MY CNC MILL FOR THE PROJECTS I DESIGN ON MY CAD SYSTEM........ THIS METHOD WORKS GREAT FOR ME IN THE EVENT I NEED TO CHANGE SOMETHING......

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MCIGICM FR-4 Copper Clad PCB Laminate Circuit Board, Single Side, 4 x 2.7 inch (10Pcs)

MCIGICM FR-4 Copper Clad PCB Laminate Circuit Board, Single Side, 4 x 2.7 inch (10Pcs)

Product ID: 36608630

Details

Brand
MCIGICM
Material
Glass Copper
Number Of Circuits
1
Phase Type
Single Phase
Product Dimensions
4"L x 2.7"W x

📏4 x 2.7 inch compact size

🧴Moisture-proof packaging

🛠️1.6mm thick FR-4 flame resistant

€ 17.58

Duties & taxes included

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Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Prototype Like a Pro — Copper Clad Boards That Mean Business

RUST FREE GUARANTEE - Moisture-protective packaging ensures pristine copper surface every time.
BULK PACK OF 10 BOARDS - Stay ahead with enough material for multiple prototypes or iterations.
COMPACT VERSATILE SIZE - Perfect 4 x 2.7 inch dimensions fit any DIY or IoT project seamlessly.
SINGLE SIDED COPPER CLAD - Optimized for easy etching and clean circuit design.
PRECISION ENGINEERED FR 4 LAMINATE - Durable, flame-resistant fiberglass backing for reliable prototyping.

The MCIGICM FR-4 Copper Clad PCB Laminate is a single-sided, 1.6mm thick fiberglass board measuring 4 x 2.7 inches, designed for precise etching and DIY electronics projects. Delivered in a pack of 10 with moisture-proof packaging, it offers durable, flame-resistant backing ideal for professional prototyping and IoT applications.

Specifications

ASIN	B01MCVLDDZ
Best Sellers Rank	#29,972 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #52 in Prototyping Boards & Accessories
Date First Available	July 17, 2017
Item Weight	7.4 ounces
Item model number	43188-169417
Manufacturer	McIgIcM
Product Dimensions	3.94 x 0.39 x 4.72 inches

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