![]() ![]() You are going to want to drill a hole in it after you think you have sharpened the bit sucessfully, to see if it is cutting unusually, or off center. Also, If you could get a piece of 1/4 aluminum, it will help to show your progress. ![]() It will take quite a bit of practice, anda few bits but you will get it. Then, once you feel your good at this, sharpen the bit flat and try to make your own point. Check your progress with a drill point gauge. by grinding the the bit down, without changing any angles. Once you feel you have gotten fairly decent at it, try "shortening" the bit. Make sure that you mantain full contact all the way across the bit whill doing this too. Start off wiht a reall cheap HF bit, and go through the motions with the grinder off. A drill point gauge is very helpful in making sure you have the angles right. Also, you need to make sure that you are grinding the edges evenly, otherwise, when you try to drill a hole it will be all oblong and stuff because the cutting edges are not equal. Its not hot enough to temper it or anything, but it cools the steel down a little faster. Usualy, Ill make one pass on each cuttign edge, then dip it in ice water. Make sure you don get it too hot, becuase it is like a chisel. Twist the bit and do it again on the other edge. Your hand will make a natural arc that creates the lip clearance needed to allow the bit to cut. angle the shank up about 10 degrees, and place the cutting edge against the grinder, and slowly lower the shank. ![]() grab the shank of the drill with your right hand, and place your index finger on the tool rest, then place the bit on your index finger, and hold it like that. Next, you are going to want to stand in line with this line. (this can be done by using a brand new 118 degree drill bit as a guide, and placing one cutting edge flush with the grinding wheel, then marking your line) It shoudl be 59 degrees from the face of the wheel, and, if you are lookign head on, it traves to your left from the center of the wheel out. I you have a HF near you, pick up a couple.įirst, you need to mark a 59 degree line on your tool rest. Its best to start out with a bit abotu 1/4 inch, and dont usea good one. For our purposes, lets assume were sharpening a 118 degree standard bit. Once you get the hang of it, it isnt to difficult, and its something that can get you out of a jam, or save you a bit of money.įirst thing you need to know, is that its done on a grinder, but I think you already knew that. Well Ill try to explain it, but its more or less somethign you need to see. ![]()
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