thanks alot for all the info guys. i think ill try some of the ideas here. ill post some more photos of the drills that didnt cut properly later today when i get back.
this might all be my fault all together. i think ive been a bit quick when getting to drill bit nr 50 for the day. below 3 drills with explanation.
question: Is there any reason for the secondary bevel to be there on drill bits from 3 - 6 mm? what good does it do? i know its suppost to keep it from wobling about, and to make you drill without that much preassure. but besides that should it not cut about the same?
the way i see it. the more you grind in the secondary facet the more you remove from the cutting edge near the center of the drill. witch i think again makes the center cut alot worse than it needs to.
Drillbit one:
https://imgur.com/8p7f5zM
https://imgur.com/iELdfK9
For some reason 5 of the 80 bits i sharpened seem to be sharpened the "wrong" way around. the cutting bevels wont even touch the material one is trying to drill. i have no idea what so ever why this happened or how its even possible. kinda hard to explain but see pictures. this one obv didnt cut at all.
Drillbit two:
https://imgur.com/kC0PzCb
Here is one that didnt cut. i did not bother to cut the seccodary bevel on this one just as an experiment
Drillbit Three:
https://imgur.com/osopbP6
Here i can tell the secondary bevel was not ground far enough. that is my bad, but is there any reason for this one not to cut properly. The primary cutting bevel is the only one that is touching whatever you are drilling anways. should kinda think it would work just as well as a perfectly 4 faceded one.
sorry for all the stupid questions. but i apreciate all the help
this might all be my fault all together. i think ive been a bit quick when getting to drill bit nr 50 for the day. below 3 drills with explanation.
question: Is there any reason for the secondary bevel to be there on drill bits from 3 - 6 mm? what good does it do? i know its suppost to keep it from wobling about, and to make you drill without that much preassure. but besides that should it not cut about the same?
the way i see it. the more you grind in the secondary facet the more you remove from the cutting edge near the center of the drill. witch i think again makes the center cut alot worse than it needs to.
Drillbit one:
https://imgur.com/8p7f5zM
https://imgur.com/iELdfK9
For some reason 5 of the 80 bits i sharpened seem to be sharpened the "wrong" way around. the cutting bevels wont even touch the material one is trying to drill. i have no idea what so ever why this happened or how its even possible. kinda hard to explain but see pictures. this one obv didnt cut at all.
Drillbit two:
https://imgur.com/kC0PzCb
Here is one that didnt cut. i did not bother to cut the seccodary bevel on this one just as an experiment
Drillbit Three:
https://imgur.com/osopbP6
Here i can tell the secondary bevel was not ground far enough. that is my bad, but is there any reason for this one not to cut properly. The primary cutting bevel is the only one that is touching whatever you are drilling anways. should kinda think it would work just as well as a perfectly 4 faceded one.
sorry for all the stupid questions. but i apreciate all the help
