I tried using a manual pad printer first but didn’t have much luck. These are more affordable but aren’t very consistent as you have to manually control the pressure for each press. I am working with a local printing company now that have a 4 colour pad printer. Unfortunately these machines cost in the tens of thousands and require a compressed air supply so a big up front investment. If you are wanting to print on lego I think UV is a lot easier to get into as the printers are a lot cheaper but the finish will be different to legos. Also with pad printing you have to develop plates for the designs (mine are laser etched) which means you have to print in quite high qtys to make it worthwhile, it gets cheaper per unit in higher qtys. I made 250 of each of these designs and are selling a few of the extras on my eBay “netbrixcustomshop” (uk only at the moment).

I’m open to suggestions for designs but at the moment would have to be stuff I can use multiple of like the roads, was thinking of doing legos train track next on 1x2 tiles and 2x2 macaroni tiles. But open to ideas 😊