Queen Excluder Beekeeping

I'm about to build a top bar beehive, and wanted a queen excluder to separate the brood from the honey areas in the hive. I couldn't find a print file, so I made one. Working with a couple of different designs at the moment, and I don't actually know if this will work. The gaps are 4.1mm, and the build is 75mm x 75mm so it would fit on my Tinyboy Printer. Please let me know how it goes if you use this