Setback for the Master Machinist
July 9th, 2009Confounded Tapers
For the first time in like ten years, I have real, paid-for antivirus software. I ran Bitdefender the other day (free version), and I found out AVG Free had missed stuff. I looked around to see which program the nerds liked most (or hated most, in the case of evil nerds), and I installed it and ran it. It turned out I had PILES of viruses.
I didn’t realize it, but a big percentage of those 419 emails have viruses in them. And if you use Thunderbird and delete emails, the emails don’t really go away. You have to compact your folders to kill deleted emails. So I’ve done all that. I had a whole bunch of deleted 419 emails hiding somewhere. I believe they’re gone now.
I may have lost real emails, too. Sometimes people you know send viruses by accident. I don’t care. I don’t know why I keep emails to begin with. The commercial ones can be useful. You may want to know where you bought something a year ago. But the personal emails tend to be trivial and not worth keeping.
I see no point in saying which program I bought. If someone out there hates me, the name of my program could be helpful to them.
I am still considering going RAID1. And I may do it for my dad, too. He emits some kind of radiation that kills hard drives. Last time it happened, I took him to a retailer which runs a well-known computer repair service. Actually, it was probably a software issue, but they decided it was his hard drive, so they replaced it. And DIDN’T CLONE THE OLD ONE. Wow, that was really worth $300. If he had had RAID, he could have tested his drives himself, popped the bad one out, stuck in a fresh one, and continued with life.
I didn’t try to fix his problem myself because my attempts at cloning hard drives had always failed. But this week I managed to clone mine, and the software was free.
People say RAID isn’t a backup tool. Whatever. I don’t want to get into nerd semantics. If your data is in two places, I call it backup. The fact that the hardware is also backed up just makes it better. A virus can screw up two RAID drives at once, but isn’t that also true of software backup on a slave drive that isn’t on a RAID system? I fail to see how RAID is inferior. I’m sure it’s not as good as paranoid backup in a vault in your basement, with all sorts of hardware safeguards. But neither of us is willing to work really hard at saving data, so it’s either slave disk or RAID.
He’s definitely getting real antivirus software. I set him up with AVG, Spybot, and Ad-Aware, but I had those things, and look what happened to me. And AVG was like big government. It kept growing and causing problems. “Here, President Obama and Speaker Pelosi would like to help you search the web! Let’s go look at fictitious graphs about declining polar bear populations!”
If the shopping mall computer repair crew was right (dubious), my dad’s problems tend to be hardware issues, not viruses. Although he once got a virus that sent his business contacts porn ads. He informed them that it was a virus, and that he was not a porn magnate. All I said was that this was his story.
Yesterday I got back to work on the soft-faced hammer I was trying to make. I had to give up. I utterly butchered the 304 stainless I was trying to use.
Here’s a link to the plans, so you can see what I’m talking about.
Let’s see. First, I have no steady rest. So I assumed that meant turning between centers. But I have no lathe dogs; everyone says I should make them when I get a mill. Fine. I decided to grip one end in the chuck and put the other on a dead center. That worked.
First problem: how do you get the length right on the various features? For example, the flange below the hammer’s head is 0.20″ thick. Great, but my lathe has no graduations in the lengthwise direction, and it has no DRO. A dial indicator has a measuring limit of about an inch, and you can’t mount it on anything really stiff when you’re using the tailstock right up against the work. I tried moving the compound and tool post around (so I could use the compound graduations), and I eventually came sort of close, but if this part had to be within even ten thousandths, there is no way I could do it.
Second, how do you do the taper on the handle? I have no taper attachment. I tried setting the compound so it moved in as it approached the headstock, but the tool goes deeper and deeper as you go, and the pressure increases, and the work pops off the tailstock. Also, the taper is 3″ long. How do you arrange it so a tool coming in at an angle hits the work at a point precisely 3″ from some other point? It seems impossible. You can get within a sixteenth or so by guessing, but the point of all this is to learn how to be precise, so that’s worthless.
Third, how do you get the little radius on the head side of the flange? I ground a tool 0.20″ wide, with a radius on it, but it really didn’t work.
I don’t know what tools I need or what to do with them. The plans don’t say what to use, and the instructional materials I have really are not adequate. They show how to do operations, from a very basic standpoint, but there is nothing in them that would enable you to machine things to specified sizes, except for threads and plain old cylinders. So I think it’s time to hang it up and do something easier. The infamous jack screw project looks pretty dumb, but I have hex stock.
I’m not sure why people say you should learn to use a lathe before you get a mill. The mill seems much simpler. To get your measurements right, you have edgefinders and wigglers and indicators and a DRO, plus graduations along every axis. If I had use the lathe to make a simple round rod, say 2.250″ long, I’d be stumped.
Speaking of mills, I do not have one. Still. It’s probably enjoying a leisurely drive through Arkansas right now.
I have to learn how to do this stuff. You can’t buy nice tools and let them rot. Maybe things will be clearer when the bulk of my lathe DVDs gets here. Other people have learned turning and threading, so I’ll eventually get it, too.
