Part 1 - Mechanics of Woodland Mills Sawmill Blade Tension: Background and Theory
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- čas přidán 10. 09. 2021
- In part one of a two-part series, we talk about the mechanics of blade tension on Woodland Mills sawmills. We look at the theory that connects tensioner torque to blade tension, then to blade tensile stress. Later in part two, we'll measure the blade tensile stress.
Here's a good video by Cook's Sawmills with some advice about tensioning: • Sawmill Bandsaw Blade ...
Here is the link to Part 2 of this video series: • Part 2 - Mechanics of ... - Komedie
As belts wear and compress and change due to temperature and humidity the blade tension will change. This makes the belleville washers necessary even if saw blades could be purchased at a constant length. The blades themselves change in length due to temperature and repeated flexing and straightening. The spring tension prolongs the life of the blades and keeps the blades centered on the band wheels while helping the blades cut straighter. I like your practical and factual approach to explaining the cause and effect behind blade tension. Please keep these videos coming!
This video is great. I appreciate the clear and concise way that you present the information without "dumbing it down" too much. I have followed your sawmill videos for a while and this is another homerun. Thanks for all the effort.
I'm a brand new mill owner and have been watching your videos. Your background and information are some of the best on the internet. Thank you for taking the time to make them! Could you make a video of your "Pre-flight checklist"? It would be great to see everything you check and any adjustments needed. Thanks again for the great informational content!
I think a lot of folks are going to think TMI, but thanks for going into this in depth. Looking forward to Part Two.
My first reaction to seeing the bottle cap on the blade to catch the last couple of drops was one of bemusement. Then I began setting and sharpening my blades, and those rust spots bothered me. So now I, too, use a bottle cap. Thanks for that, too.
Well done ..thank you. I don't even run a Woodland but great info. Cook video's have always been a go to for me and I have always been confident in what he has to say
Just changed my first belt (WM122) and now me blade won't fit. This video is just what I was looking for!
Great you broke my brain 🤯 And this is why I should have furthered my education. I did pick up some good information that will be useful. Thank you and take care!
Thank you for putting some science into sawmilling. I did a similar exercise a year ago to illustrate how much tension there is on a blade and how much force the bearings are under. Appreciate your effort you put in to you videos. You earned my subscription.
Your videos are the reason I have been seriously thinking about buying a woodland mills sawmill. Very informative and professional. I would like to see you make a quick video of your sawmill shelter. What are the dimensions? How did you make the base for the track and track extension? Thank you.
Thanks, see previous videos on those other topics.
Really liked this video on blade tension and tracking. Really helped me setup my HM122. It certainly is important to get the blade wheels on the same plane for tracking. We used the torque wrench technique to set the tension at 20 ft lb. So far we have only cut about 200 board ft of wood..but everything is operating well and correct! Thanks for your technical expertise on this subject.
I will be assembling my mill in the next week or so and must admit to being a little nervous about throwing a blade after having seen and read of so many users having had this happen. Even though I've used vertical and horizontal bandsaws professionally for a few decades I was really surprised to see your chart on how small differences in torque translate into undue loads on components. Think you may have cured me of the "I'll just reef it a bit more to be sure" mindset. Cheers!
Mesinnya mantap sekali masbro canggih, memudahkan bagi pekerja kayu
I can’t help but notice how similar this is to turning my guitar. Specifically, the friction coefficient. What ends up happening is the guitar string tension (same as blade tension) will slightly loosen after the vibration has backed off the added the friction tension. To counteract this, I over tighten a small amount, and set the final tension by loosening. Now the blade (or guitar string) tension won’t drift after use.
that it is the utility of the small white recipiant that one sees where the water arrives on the blade at 3.51 Time vidéo
Prevents lubricant water from dripping on blade after I am done sawing. Usually a small amount will drip out and it can cause a rust spot on the blade if left to sit.
@@Lumber_Jack tank’s
Mr. Honda ‘God is in the details’ was right! Perfect example of why we strive for perfection.
during use does the compression of drive and idler pulley belts affect your calulations of tension on the blade?
Shouldn't be a big change -- the tensioner has a spring that helps maintain tension as things change during operation.
Great video, but now I have a headache! Lol. I’m not an engineer.