Tandefio 50 Pcs 304 Stainless Steel Metal Business Cards Sublimation Blank Steel Card Laser Engraving Stainless Cards for House Office Customer DIY Gift Plate Cards (0.5 mm Thickness)

Marks great with my laser. Definitely going to be a repeat customer.

Placas de acero inoxidable para grabado láser tienen el grosor solicitado 0.8mm y traen plástico de los dos lados para protegerlas de rayaduras

They bend very easily and warp when trying to etch them on a laser engraver.

When I first pulled this package out of the box it was looking a little shabby, so I got cautioned a little. Upon opening the package though, I could see that the cards were well packed at the factory so that they didn't slide around or scratch each other up. THEN, I saw that each card has a protective film over it that you peel off before using. Now I know SOME people out there are going to complain about the film but let me assure you that YOU WANT THIS FILM ON THERE. This is a protective film that guards the surface of the card from scratches. When I peeled that film off, I was in love with these cards. The surface of the card was IMMACUALTE! It was shiny and just well-made on both sides. No sharp edges or anything like that. I'm a big fan of these cards and will buy them from here on out. Well worth the .65 cents each that I paid. The thickness of these cards is amazing. Just really HIGH QUALITY all the way around. I used them for (fiber) laser engraving and I tested one. It produced a very black mark. You won't be disappointed with these! I hope this review has been helpful!

Warps terribly with blue light diode laser. Only works with IR laser. Unfortunately I let the return period expire before testing the low quality steel with my blue light diode laser. You can see from the photo (compared to an xtool OEM steel material) how much this warps in the blue light... I bought these specifically for the color-changing characteristics of steel, but these are almost worthless for me now.