Thanks guys.
I really need to start working on my rpu again. For the past few weeks I have been sort of in one of those periods where you just don't feel like doing anything on it. To get myself reinterested I decided to do something fun on it instead of making the patch panels I should be doing. So I decided to remove the front axle and drill some lightening holes in it.
I decided to do 13 holes that are 1 inch in diameter. That spaced them 2 5/8 inches apart. I looked at the drilled axle in my 27 for inspiration and that is the spacing I used when I did it years ago. To get a scribed mark down the exact center of the axle I made a block out of 1/4 inch steel that was 1 1/8 wide x 2 inches long. In the exact center of it I drilled a hole so I could put a sharpie in there and when I ran it along the trough in the axle it made a perfect line right down the center.
Next I found the exact center of the axle and made a mark for the first hole, and then spaced the remaining holes out every 2 5/8 inches from each other. I drilled some 5/16 holes as pilot holes and then worked up to a 1/2 inch drill bit.
This is where I ran into a problem. I want to end up with 1 inch holes but first I decided to do them all at 7/8 and then finish up with the 1 inch bit. When I drilled the first two holes the 7/8 bit worked well, but on the 3rd hole it became dull and wouldn't cut. This axle is a forged original Ford and it is VERY tough steel. So I quit for the night and figured I would go buy a new drill bit the next day.
I have never had any luck sharpening drill bits and I have a Drill Doctor that works great, but it only goes up to 1/2 inch bits. A new 7/8 bit was going to cost me about $25, so I decided to go on line and learn how to sharpen drill bits the right way. There were a ton of instructional videos on YouTube and I watched about 4 of them last night and learned what I was doing wrong.
Tonight I went to the shop and tried sharpening the 7/8 bit the way they did them in the videos, and when I tried it the shavings started flying......I had actually sharpened the bit on our bench grinder ! [cl I was able to actually drill the remaining 10 holes with the newly sharpened drill bit, and saved myself about $ 25.00.
I finished up with the 1 inch drill bit (which I also sharpened) and then I lightly touched a 1 1/16 bit to each hole to take the sharp edge off. I got the axle reinstalled and I think it looks pretty good, and I learned how to sharpen drill bits in the process.
Don