Shimano Brake Bleed Funnel

This is a perfectly working version of the bleed cup for Shimano hydraulic MTB brakes. It has the right M5 thread and is a bit bigger than the original, which makes it less likely to overflow. Put some rubber O-rings on the cup and the plunger for it to seal correctly. 

Print the cup in PETG so that the thread lasts longer.

Prints without supports.

Important note: 
Be careful when using the funnel and pressing the plunger inside! Due to the orientation of the layer lines, the thread can break off inside the brake lever, and is very hard to get out of there.

Update: 
Depending on the clearances of your printer, you might need to size down the plunger a couple of percent. For me it's a tight fit but I've heard of others having problems fitting the plunger at all.