Display stand - adjustable

Made in DiamondAge PLA on an Ultimaker 1.
The two parts of the stand are connected via three tapered 270 degree collars which are jam fits into corresponding slots in the right hand and left hand uprights.
This allows the stand to be opened the desired amount and then locked in that position.
This works well in PLA. I don't know how well it would work in ABS.
The leftmost stand in the photo is the as-drawn size. The other a 50% scale up in Cura.
Note that two locking wedge stl files have been posted. One is 50% of a full round and the other 75%.