🔍 CNCOLETECH 3-Piece Si Mirror Coated Gold, 20mm Dia, for CO2 Laser Engraving & Cutting, 40W-150W Review

These mirrors and lenses are a good cheap alternative - at least I thought so. The quality is not very good. With rare use and thorough cleaning, they only lasted a few months. Several coatings had imperfections upon arrival: blisters, imperfections. They were quickly replaced but quality is still an issue. The coatings have already deteriorated and need to be replaced again. I really wanted to like them, but I just can't use them anymore.

I used these to replace mirrors on my 100w CNC laser machine at home. This machine is used about 2 hours a week and I have been using it for several years and have found that the existing mirrors need to be replaced. The new mirrors were easy to install and immediately improved the consistency of the cuts. I recalibrated the mirror angles before using, which certainly helped, but the machine runs like new again. I cannot vouch for the durability of this product, I just don't know how well they…

I removed the stock mirrors from my good old Chinese k40 as part of a slow upgrade process due to financial constraints. Disappointed that my DSP isn't more finished than I expected, I know my way around lasers and just tried to clean mine often because they looked ok. I then inserted this. HOLY ****! It made my car capable of what I was hoping for. From the epilogue to this case. Now I have to get a lens, but the mirrors were the biggest change in quality. Worth every penny. No, I don't get…