10 Pcs Blank Challenge Coins for Engraving, Aemygo 40mm Solid Brass Engraving Blanks Coin with Threaded Edged, Laser Engravable Stamping Coin for DIY Crafts, Commemorative, Collection Supplies

Arrived promptly. Engraved well. Over all good product.

Very pleased. Cheap and functional.

Using my Commarker B4 fiber laser, I cranked out these coins in short order. Other seller's coin blanks do not measure up to the dimensions stated. These blanks DO measure the dimensions stated with a 2.97 mm thickness, (stated 3 mm), and the diameter measured right at 40 mm. My first order impressed me with the quality and dimensions being truthful, so, I bought two additional 10 packs to make sure I have these on hand.... Great product....

I used these for a custom order and they loved them

Good looking blanks, no problems.

Sadly, these blanks are not 3mm thick. Center thickness is in fact 2.56mm. The raised, reeded edge is 3mm and I guess that is what this vendor measures…? Another person measured 2.9mm. I guess the vendor’s QA sucks. I’ll return and re-order, with the hopes of receiving a batch closer to the claimed 3mm thickness.

So these are not as advertised, they are not brass, which is the biggest issue, they do not finish or polish as they should. Shame because they are nicely made, uniform, and have a nice protective case. They may be suitable for Deep engraving with a MOPA that can control the colors though.

Great smooth flat surfaces on both sides for stamping, engraving, or lasering. The coins themselves are solid and feel good in hand. Scalloping on the edges is uniform and clean on all coins. The individual cases is a nice touch and helps keep them from damaging each other.