As we work mostly in wood the necessity of sharpening drill bits seldom arises. However we are in the process of drilling and countersinking an 8.5mm hole in 200 pieces of 8mm flat mild steel so I had to dig out my old drill bit sharpener. Similar to this :
This is a mad angle when set on the device. The bit approaches the grinding wheel nearly horizontal. W.T.F. This can surely not be correct. Existing angle on the bits is about 60 degrees. I just used a sharp bit I had to set up for sharpening.
Besides what's with this 1.16" overhang ? What's that about ?
Very rarely having to work with steel we are using an electric drill in a hefty drill stand. Reducing the drill speed electronically doesn't appear to be a satisfactory way of drilling these holes so we are reduced to using max speed and applying pressure to the point were the speed slows slightly. Not a good idea. We've burnt out one drill (Cheap Skill) already.
Any suggestions ?