Learning to Weld

Learning to Weld

I grew up around welding. My Grandfather had a welding shop where he built bulldozer blades. My dad worked his way through college as a welder. And as Plant Engineer, I supervised welders. However, I have done very little welding myself.

I know a lot of the theory and I know how to set the welder to the specs for the material being welded. But the actual physical skill of making and holding an arc and forming a puddle, I am just learning.

I have three welders to choose from. I have a small flux core wire feed welder. I have a large Lincoln MIG wire feed machine. And I have an old Hobart gasoline powered DC ARC welder.

The little wire feed is great for tacking stuff and welding exhaust. Because it is small and portable, it is great for working under the car. It makes ugly welds however. And with minimal control, it often does not hold very well.

I have learned to make pretty nice weld with my MIG. The Lincoln has continuously variable controls for voltage and wire speed. As long as I keep good tips in the nozzle, it makes nice smooth welds.

Only recently I go the old Hobart running again. It has sat dormant for at least five years. It took a bit of work to get the engine running again. But after the twigs and acorns flew out of the generator, it is making good power.

I have begun learning to use the stick welder. It turns out that the current setting has a much narrower range than I expected. If it is too hot, it blows holes in the metal instead of welding. If it is not hot enough, then the rod will not strike or it will stick. Also, the arc length seems to be critical. If it is too long, then the weld just splatters. If it is too short, then the rod sticks.

Getting the hand coordination right has been the most challenging part for me. I now understand why people say that the only way top learn to weld is to practice. I have been practicing on some simple projects that allow me to grind away my mistakes and try again.

While you can’t learn how to weld by reading a book, you can get some valuable tips. Luckily I have my dad and a good friend to ask when I have a problem. But there is a great reference that tells you all the things you need to know to learn to weld. Get a copy of Welding Secrets Revealed to learn more. Sign up for their newsletter to get timely tips in your inbox. Welding E Book

Mifi 2200 mobile hotspot review

Mifi 2200 mobile hotspot review

I recently swapped my Hugesnet Satellite system for the Verizon Mifi 3g mobile hotspot. So far I have been very happy with it.

I was at fist concerned about signal strength as we sometimes drop cell calls at our house. My plan to was to find somewhere in the house that had a good signal and then use a router as a repeater. However, in actual use, it picks up everywhere in the house. I just sit it near what ever computer I am using or, if it is charging, just lay it in the floor in the hallway.

This past weekend, I took the device to my mother’s house so she could test it. She currently uses the Verizon USB modem. To get reception in her computer room, she has to plug the modem into a long USB extension cable and tape the modem to the window.

My Mifi needed charging so I sat in on her sewing table well away from where hers gets a signal while I booted up my lap top. I let it connect to the wireless signal and I planned to move it once it charged up a bit. However, to my surprise, it had plenty of signal right where it was. This was in the center of her basement where cell phones hardly work.

She was able to connect with her laptop and carry it upstairs while the Mifi sat in the basement plugged to the charger. Both of us were amazed at the signal strength not only of the wireless signal but also the cellular reception.

So far the only disappointment has been that the tethered mode of plugging the Mifi into my computer via the USB cable refuses to work. I had hoped to use tethered mode while in the car to avoid running down the battery in the Mifi. My computer uses XP so I suspect that there is some problem with the installer it my older version of windows. I gave up trying to use tethered mode as the wireless mode works so well. The battery life is several hours so it has not been a problem yet.

In order to connect my desktop computer to the Mifi signal, I used dd-wrt software to convert my old router to client mode. The router automatically recognizes the Mifi anytime it is turned on and logs in automatically. All, I do is turn on the Mifi hotspot and in a few seconds, I am on the internet with the desktop.

When using my laptop, I always have to hit the refresh button to see available wireless connections before it will see the Mifi. But once I click refresh, it connects automatically.

I have the 3GB per month plan and so far I am on target to use about that much. The satellite plan gave me 200MB per day so I am accustomed to working within bandwidth restrictions. I use Opera in Turbo mode to save bandwidth when possible. However the other users in my house just browse as they normally would.
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Flea and Tick control

Smash is starting to collect tick already this year. Every afternoon during a pet the puppy session, I pluck off a dozen or so ticks.

I hate to use chemicals but I am seriously considering using K9 Advantix flea and tick medicine.

According to their web site, Advantix kills not only ticks but other parasites for up to a month.


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Abandoned McDonald Elementary School

Abandoned McDonald Elementary School

A tour of the abandoned elementary school in McDonald, Tn

Jennifer arranged for us to tour the old school building in McDonald. This is the school where she received some of her early education. It was abandoned years ago when the boiler failed and is scheduled for demolition.

Many memories haut the hallways. The school was abandoned abruptly in mid year and students were displaced to Black Fox and Prospect elementary schools. The school has most recently been used as a community center, but with no electricity and no running water, there has not been much use made of the building.

The roof has not been maintained and with no heat, the structure has begun to severely decay. The once beautiful hardwood floors in the hallway have buckled and the doors are falling off their hinges. Paint is peeling and the ceilings are falling in. Most of the windows are broken.

Many odd reviewers of the bright days of elementary school remain however. The paintings of Charlie Brown and Lucy marking the boys and girls restrooms are still colorful. The fact that the restrooms are in the basement with and can only be accessed by stairs may be clues to why the building was abandoned.

The old cafeteria, also located in the basement, was littered with an odd collection of tables, chairs yard sale remnants and weird cans of processed food. There was a very nice industrial refrigerator there in the midst of the junk however.

Many of the paintings on the walls of the classrooms survive. There is a train representing the moths of the year in one room and a row of apples lining another room. In one pile of books, Jennifer actually found one of her old school books. It had her name still listed in the front of the book when it was assigned to her.

One room has a unique feature. It has an elevated section with a tree mural painted on it. It was called the tree house. The fifth graders could climb a ladder and sit there and read.

The auditorium seemed the best preserved room. The stage was still in good shape and less debris cluttered the room.

At some point someone, I hear it was the Ruratain club, spent a lot of money to add electrical wiring to the building. Apparently the project was never finished as there are big empty breaker boxes hanging on many of the walls. The electricians made no effort what so ever to make the installation look nice however. There is ugly PVC conduit exposed on the walls and the holes where the came through the walls are ragged and unfinished. In some ways it looks like they had to have worked extra hard to make the conduit runs so ugly.

In the basement there is a huge Ronan switching panel connected to the large emergency generator outside. It looks like they were well prepared for an extended outage.

Outside, the playground is nothing more than an asphalt pad. There is a set of monkey bars in the woods surrounded by briars.

The gym is a huge metal building obviously built much later. It appears to be in good shape. However there is an odd drainage problem apparent wilt the building. The grade slopes toward the front where there is a huge sidewalk. There is no provision made for the water to drain under the sidewalk so it just dams up there in a heavy rain. There is evidence that the water collects several inches deep at the corner of the building. The side panels are rusted and there are stories of water entering the building. I can’t imagine what the builders were thinking.

Jeep Dana 35 Wheel Bearing

Jeep Dana 35 Wheel Bearing

A few weeks ago I replaced the wheel bearing and seal on Janice’s Jeep Cherokee. Her Jeep has a Dana 35 rear axle with anti lock brakes and the Trac Loc limited slip.

Not long after, the rear was making a roaring noise worse than before. I noticed a lot of heat in the pinion after a short drive so I replaced the pinion bearings.

I also replaced the axle shaft due to some checking in the bearing race area. I used a ZJ shaft as a replacement. This meant that I had to swap the anti lock tone rings as they are different. I used an acetylene torch to heat the ring and allow it to fall off the shaft. To reinstall, I used my electric heat gun to warm the ring and then tapped it into place with a hammer.

The noise continued to grow and there was noticeable sloppiness in the brakes. This was followed a few days later by a leak in the wheel bearing seal.

I pulled the wheel and brake drum to inspect and found that the new bearing was extremely worn. There was noticeable slop in the axle and the brake drum had been dragging causing a lot of heat.

I pulled the cover, removed the C clip and pulled the axle. The axle looked fine. I extracted the bearing and found it very worn. I installed a new bearing and seal.

Upon closer inspection of the bearing, I noticed that the race was cracked. I suspect that I got it twisted while installing it in the axle tube. I had used a punch to install the bearing since I did not have the correct size bearing driver available at the time.

This time I turned down one of the bearing driver I have using my mini lathe to make it fit. The bearing went in with a satisfying thunk. Hopefully this one will last.
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