Hi, I made this during a drawing exercise .. I think it can be useful to someone ;) I upload the two version with hole of .. 3,5mm and 2,5mm The inside edge prevents oil output ... if you use it as oiler here .. a superfluous video of build :D - If you think to buy from Gearbest and want support me, use my affiliate link, thanks https://www.gearbest.com/?lkid... If you want to make a donation, you can use thingiverse tip, thanks https://www.thingiverse.com/Sg... Check me out at: Youtube https://www.youtube.com/SgaboL... Instagram http://www.instagram.com/sgabo... Google+ https://plus.google.com/+Sgabo... Blogger http://www.sgabolab.com/ Pinshape Shop https://pinshape.com/users/130...