If your of the average age of the VMXrider you have a lot to catch up,
you should have gone to Tech. for 4 years back in the late 60's to 70's then spent the next 30 years trying to teach apprentices how to sharpen drills before they invented the drill sharpener attachment,
A fine grinding wheel on a bench grinder is best but at pinch an angle grinder can be used
buy only High speed steel (HSS) drills they do not mind if they get hot while sharpening if you quench them in water before you use them,
Use a metal ruler with the end against a flat surface and hold the drill along the ruler then rotate to check that both side's of the drill are even then measure from each side to middle
and again get that measurement equal other wise drill will cut over size ,
if you look at the drill from the top it should have a "chisel edge" not a point across the smallest part of the undercut (middle )
the cutting edge should be the highest point when viewed from the side, but to much back rake (ie if the cutting edge is to high compared to the meat of the drill ) it will tend to make the drill bite in to much and jamb,
after you have sharpened the drill start a test hole and if it is not drilling to you liking take out and look at the top surfaces , you should be able to see where it is rubbing and where you need to grind a bit more of , if it is bouncing around a lot it probably has to much rake (ie too sharp)
Have a look at a new good Quality HSS drill before you use it (P&N Brand usually OK) to see how it is sharpened, both from the top and both sides
don;t bother with cheap drill bit's included free with your u beaut drill from Bunning's
use some sort of cutting oil when drilling ideally a specialised cutting lubricant like trefolex etc,but grease or oil with do (just)
aluminium likes WD40 or similiar,
(what do I do for a living drill Stainless Steel and teach apprentices)
Cheers
Noel
