At SendCutSend, we do offer tumbling services! We soften the edges of laser cut parts and remove burrs on small parts through a ceramic tumbling process. We use specialized equipment harmonically tuned to the specific material. This allows us to achieve a more consistent finish across the parts. Take a look at our guidelines here: Tumbling Design Guidelines
Please note, this is not a finishing process and does not guarantee a uniform finish on the individual parts. However it will prepare your parts for later surface finishes or chemical brightening.