Valve cap Penis remix. 100mm fits great on a valve cap.Size is to big in for example Cura, just resize it to 10%. And let it print upright.It only needs support under the balls. It needs to Tickle it a little to stay upright.No viagra needed. When its fully hard, it will stay hard! Only in PLA if it gets to hot. It could sagg a little. In PETG it will stay hard! Print with 10% infill in PLAPrint with 5% infill in PETGI recommend a slow print speed! With petg i recommend 30mms at 0.12 layer height.With PLA i would go more then 40mms at 0.12mms Just to get the best result!Possible to print at 0.2 to save time, but you will lose some details like the Vains. But the effect from looking at the car tire wil not be effected. It wil still be a Dick move! :D Enjoy