Is there another way to create bending/winding holes within metal

>>921735
just use a curved drill bit, duh

>>921735
Only other way I can think of is drilling holes from the outside to meet up, then staking in a small ball bearing to seal the outside(as done for crankshaft oil passages), but I'm not sure if that'll get you what you need.

File: crankshaft-lubrication-oil-passages1.jpg (93KB, 734x536px) Image search: [Google]

93KB, 734x536px

>>921785
Pic for reference.(bottom is the crankshaft)

>>921790
Thanks friend I'll google around for some more info on sealing the holes. That seems like the best option for what I need to do.

>>922132
you weld up the end of the hole on the outside