My mother works in an allergy clinic and has been using these skin test assay needles for years, using the vacuum-formed plastic assay tray that is pictured next to the print. These trays are very flimsy and crack easily, and the company that produced them has discontinued production despite the assaying needles still being used in the clinics my mother works at.
I created a model using the dimensions from the discontinued tray and the skin test assaying needles fit perfectly as pictured. I have since modified the file slightly to lower the amount of resin used by cutting off unnecessary material and adding notches to prevent the needles from tipping out of the tray. This rework of the print pictured is the .stl file that I have uploaded.
Not sure if anyone will be able to use this, but I figure I'd upload so that if others have the need they could also have a more durable tray that better holds the assay needles in place.