There is no limitation on maximum number of letters, I'd suggest to keep it under 10 letters otherwise they'd be too small to identify though. And of course you can use a space between 2 short words, our designer can help you with the distancing between each letter as well.And to get this back on track, @SUN-FLY Poker Chips What is the maximum number of letters that can be used when changing the name on the chip? Can a space be used between two short words or groups of letters?