Two Tier Card Rail

My 5 year old son wanted to play Uno with my wife and me, but he had a really hard time holding on to all those cards after a "wild / draw 4" was played (several times in a row). Since his little hands didn't have the capacity for it, I decided to make him something to help out.

This started as a single tier version, which didn't really have the capacity for aggressive games, so I quickly revised it and made a second version with two tiers, which is this Thing!

I printed this on my Ender 3 Pro recently and it took about 8 hours at 60 mm/sec. I've found my printer can do faster, so if I have to print more I'll play with speeding it up.

I recommend you slice this so that it has several wall lines, which adds a good bit of strength to the part. Also, I orient it on my printer with the flat side down.