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

🔧1.6mm thick durable copper clad

🛡️FR-4 flame resistant fiberglass base

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Description

⚡ Elevate your electronics game with pro-grade copper clad PCBs!

PACK OF 10 - Bulk 10-piece set keeps your projects flowing without pause
BUILT TO LAST - FR-4 fiberglass backing ensures flame resistance and durability
PRECISION DIY READY - Compact 4" x 2.7" size fits versatile prototyping needs
RUST FREE GUARANTEE - Moisture-sealed packaging protects copper from oxidation
COPPER CLAD EXCELLENCE - Single-sided 1.6mm thick copper layer for reliable etching

MCIGICM FR-4 Copper Clad PCB Laminate Circuit Board is a single-sided, 4 x 2.7 inch (10 pcs) set designed for DIY etching and prototyping. Featuring a durable 1.6mm thick copper layer on a flame-resistant FR-4 fiberglass base, these boards come moisture-sealed to prevent rust and ensure long-lasting quality. Ideal for millennial makers and professionals seeking reliable, compact circuit board solutions.

Specifications

ASIN	B01MCVLDDZ
Brand Name	MCIGICM
Customer Reviews	4.6 4.6 out of 5 stars (622)
Item Dimensions L x W x H	4"L x 2.7"W x 0.55"H
Item Weight	210 Grams
Manufacturer	McIgIcM
Material Type	Glass, Copper
Model	43188-169417
Number Of Circuits	1
Part Number	43188-169417
Phase Type	Single Phase
UPC	710185832531

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