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A crash course in milling, by Glacern Machine Tools. I purchased a Glacern drill press chuck. Best chuck I've ever seen. https://www.youtube.com/watch?v=U99asuDT97I&list=PLyv4Q1JxT_Rh0Fv5loUN9ZTm74VkxYjhJ&index=1 Joel

16 years in a military uniform, and no regrets about deciding to part company with it. The wasted money and materials was far more than my stomach could handle. I was furious with the system that requires that we spend 10 times more money than we ever needed, simply because if we didn't spend...

Tucker943, My dad was a school teacher, computer programmer, and majored in math and the sciences. When I was a little kid, he'd take me by the hand and lead me to his bookshelf loaded with books. I learned at an early age that there is no sense learning anything the hard way, when thousands...

Tucker943, I've been logging for firewood for many years. I've learned what to look for when sizing up a downed tree, but this was the first time I've come across a dedicated classroom instructional video depicting the potential hazards when attempting to cut a limb that's under tension. I...

Stig, Thanks to that video in a language I wasn't able to understand, I spent a whole evening researching the lesson being taught by those folks. I learned a whole lot from that video. I appreciate your input on the subject. Your comments tie this entire discussion together, giving...

I would have to believe that the tension contraption was made for 'classroom' instruction at a forestry school, or possibly for a government timber worker safety class, such as our own OSHA might use. Bob Underwor may have used something like this at the Bottineau School of Forestry, here in...

I'm attaching the following link to help support the lesson being taught in the tension video I posted above. Please refer to the section "Spring Poles" in the following link. It's very useful information, which the video clearly supports...

OK......after a bit of research on this topic of cutting a log that's under tension, here's what I've discovered. In the training video above, a log is inserted into a contraption that puts pressure on one side of the log. The side of the log that the hydraulic jack is on is being compressed...

I attempted to translate the word "Spannung". I believe the word means TENSION. If so, it's a tension simulator. In one of the attempted undercuts, you see that the saw operator gets his bar pinched. They had to relieve the tension in order for him to remove his bar from the log. I...

I didn't understand a word the guy said either, but the point they're making in that video was fairly apparent. When cutting a log that's under pressure, certain techniques are employed that will reduce the risk of injury, or worse. It would be much better if translated into English though...

http://www.youtube.com/watch?feature=endscreen&v=c4EWEMo3Wic&NR=1 <iframe width="560" height="315" src="http://www.youtube.com/embed/c4EWEMo3Wic" frameborder="0" allowfullscreen></iframe>

I like the super slow rotation of that device, as it doesn't throw debris at 100 mph around the site. Seems very safe to use near the home, where windows are sometimes a concern. And as you stated, super fast. Thanks for the vid. Joel