Effortless fixing to external walls: The plug is suitable for the uncomplicated and thermal bridge-free attachment of lightweight objects in insulating materials without prior drilling.
Saves time and effort: The insulation plug has a special thread, which eliminates the need for pre-drilling and simplifies installation in styrofoam, plaster and polystyrene - saving you time and effort in private and professional construction projects.

changed print plate orientation and with 0.28 faster print speed

I have printed the dowel upright. There are a few frays under the curves, but they don't detract from the function. If you prefer to print the dowels with support (lying on the plate), then use the second profile.

Original Model from https://www.thingiverse.com/thing:3775538