This thing is a clip to help keep two slotcar track pieces joined together. It was designed for a very old (40+ years old) slotcar racing track I own.

The racing track originally came with a lot of these clips but unfortunately many were lost over the years.

If you have a similar slotcar racing track from the early 1980s you'll probably need to make a bunch of these clips like I did.

The pictures show a few clips I printed, all at the same time, at a resolution of 0.2mm.

• You can try to use lower resolutions like 0.28mm or 0.32mm but keep in mind they will look uglier and will become more fragile and prone to break.
• Print them vertically
• Add Brim to help them stick to the print bed
• Use Tree Supports , not normal supports

And finally, print a few/bunch of them at the same time! Just place them 1cm or so apart from the each other.