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

Was a little bit weary compared to the reviews left here, so I'll share my honest experience with these boards. Right out of the box, the surface wasn't that great. Kind of like scuff/grease marks on it, but nothing that would effect the usability of these boards. Just sand off the imperfections with some fine grit sandpaper. I personally didn't notice any severely messed up cuts for the edges of the board, maybe others got a bad batch. I'm sure if I measured it that it wouldn't be perfectly square, but I'm not going to nitpick on that. For the actual etching, especially for the first time, I found these boards to work almost perfectly. I used Staedtler's universal permanent markers to make my traces, and it worked surprisingly well (sharpie works ok but can smear off). Almost all the traces were preserved after etching, and I didn't notice any peeling or have trouble with the thickness of the copper. Other than needing to saw the boards into smaller manageable sizes, these boards were very easy to use. Overall, for the price it's a nice and easy introduction to DIY PCB manufacturing and I will be buying more.

I have never received this set. I returned the first set due to very poor quality.

Fits all my needs

I purchased the wrong boards. I needed double sided and bought single. This was my mistake and while waiting for the right ones to come in, I tested these boards. I cut traces in a finished PCB that is only 25mm in diameter on a Shapeoko 4 XXL. It's such a giant machine to see these boards on but the end result was amazing. As with any blank board, there is going to be the slightest thickness variation but I was able to cut across the entire board with no problems by slightly increasing my depth of cut to account for this and it worked great. I did not use standard PCB design software mainly because the board had to be so compact that it was difficult for me to get the design to fit. I ended up doing the actual design work in Carbide Create. I did not use board leveling so instead surfaced a base piece of MDF to hold the board and then did depth checks in all four corners. I would run the depth test until the bit cut the copper in all four corners and then run the cut at that depth. It worked perfectly. Now waiting for the right boards to get here so I can test my holders for the back side cut.

Good quality