A universal marker cap - the solution to prevent drying out the marker tip when you lose the original cap

Description

I encounter this problem often - the caps of my markers get lost and I can't find alternative ones. Then they get dried out and can no longer be used. 

I therefore designed this universal cap, which can be used with various sizes of pens and markers. The cross section of the model with diameters included is given below:

Printing

• No supports needed
• printed with Bambu Lab A1 Mini
• Basic settings should be sufficient
• For more successful printing, I added some supports in the model holding the first layer on the heatbed. These are to be removed after finishing the printing.