Drilling Straight Holes into Propeller Shafts

[Cloud in the Wind]

I'm attempting my first motorized model using the MQ-9 Reaper.  I've selected a small motor from my parts bin of old toy drones which provide a nice small package.  My struggle for the past week has been in drilling a perfectly straight perpendicular hole into the propeller for the motor shaft.  I had tried to use a dremel freehand with the first try on a piece of scrap being prefect and all subsequent efforts complete rubbish.  So it being Christmas, I got myself a drill press (yes needed one for wood working anyway), That got me perpendicular ... but not aligned in the center as you can see from these images.

 

Do you guys have any suggestions?  My next problem will come when I try to mount the motor inside the model.  I'm hopeful that I can use a connected prop and motor combo and epoxy putty to build up a mount that will be secure and stable.

https://imgur.com/of0FGIO

https://imgur.com/JuooOWo

https://imgur.com/X36O2lS

[dnl42]

UMM has a centering jig for exactly this task. The usual approach, however, is to get a center square to mark a number of intersecting lines. BTW, there's also a center finder when you want to drill into the side of round stock. While the UMM jig is only available from UMM--you should know them for the JLC saw. The center square can likely be obtained from a nearby woodworking store or big-box home improvement store. The finder is also available from many sources, perhaps locally.

[Cloud in the Wind]

Thanks DNL!  The Center Finder and Jig are definitely going on my Valentines wish list. 

 

For the small diameter or this piece and the fact that its already somewhat assembled, I needed a different approach.  What worked best (not perfect mind you) for me this time was the following.  I started by drilling a hole smaller than the dia of my part in a block of wood.  I didn't have a 7/16" drill bit.  Then I swapped to a reamer to chamfer that hole large enough to fit my part.  Then I strapped my part into the shaped hole and stabbed away.  Video will be forthcoming of the result.  I needed to get the motor mounted in its cowling to make the final micro adjustments.  Hope it all holds together.