Відео

I agree with you that 1/32 is sufficient for "framing" operations, but when you are working with puzzles, cookie molds, box lids or even threads 30 thou can be a bit slop (and yes, I know wood moves) The point I wanted to make was, those folks trying to use a 1/64 in end mill in a Harbor Freight router are likely to have issues. For materials I use wood products, plastics and non-ferrous (al & brass) ... if I need steels I will go to school and use the Haases (is that plural for Haas?) As far as vibrations are concerned, my wooden table sits on pads (wheel lifted up), is tied physically to the wall, and is weighted down with used brake rotors. My machine lives in a basement and at 65 yrs old there is only so much weight I want to deal with. To be honest as a Mechanical Engineer I always thought vibration management was a bit of a black art... The good news so far is that I am without a doubt the weakest link in the process

​@@carlslater7492 For woodworking, the finished product can be 1/32" off from the specification and no one will ever notice so long as all of the parts are consistently off by the same amount. A CNC designed for woodworking can be off by up to 0.002" per inch in one axis and 0.001" in the other axis and the woodworker may never notice and he certainly wouldn't care. There are techniques to fix any mismatch during finishing operations. However, the same error when making precision machined parts out of metal will be completely unacceptable. In any case, my point was about the video focusing on spindle runout for woodworking. Other factors are far more important, such as the lack of rigidity in the machine design and/or the base (usually a table) it is mounted to. The presenter also seems to be unaware that it is common to use single flute end mills for woodworking. He entire premise on the impact of TIR on tool life is based on using a 4-flute end mill, a design that is impractical for small diameter end mills when cutting wood.

@@gaiustacitus4242 , if you are ever in the Cincinnati Ohio area I would be delighted to buy you adult beverage. I actually believe we agree on far more than we disagree. My guess is a lot of our differences revolve around “class of machine”. My budget for everything was less than $12k. That bought me a 4’x4’ 3HP air cooled spindle with an ATC, using ISO-30 tool holder. The machine had to go into my basement. Could I theoretically get better performance out of say a ShopSabre RC but they start at $25.5K … and then there is that basement thing. Frankly ShopSabre was the “class of machine” I was targeting. I agree: - Rigidity is extremely important. The Onefinity CNC is one of the stiffer machines in its class, but it still requires a “table”. For me a ¾” Baltic birch torsion box seemed reasonable, mounted on 2” thick lumber making a roll around base… seemed reasonable. Would I have liked a ton of cast iron and concrete oh yeah, but the word here is compromise. - Vibration is also huge. I choose wood over other choices, such as the quick angle iron carts from Kreg. With wood I can roll the table around but yet tie it quickly to surrounding structures to help dampen out the vibrations. If I need to add some stiffness it is easy enough to do. - With regards to the tooling, what I see most commonly used with woods are 2 Flute designs, instead of the O Flute (single cutting edge). I have some O Flutes and use when appropriate. But I am sure you are familiar with speeds/feeds/chip loads. The reason you saw 4 flutes was because that is what I had good data and pictures for. My artistic skills are poor, and if there is good data available use it…. In my mind the concepts transfer. Do you disagree? - Precision & Repeatability … I confess I am addicted. I am a Mechanical Engineer who worked in Turbo-machinery for 40 years. So yeah, my machine will never see Ti-64. I certainly understand the cost of tolerances … but once you give up control of a parameter you lose control of that aspect of the process. I am afraid many hobbyists have no concept of stacking errors (tolerances), so hopefully my explanation helped. I am still surprised a jet engine fits together with requiring a big ole' wrap from a mallet. Fundamentally my set up is a sequence of compromises. What I hope I have shown is just what compromises I considered when creating my machine. This was extremely long winded, now where was that adult beverage?

@@carlslater7492 I do not travel through Cincinatti much these days, so we'll have to lift a virtual stein or two. FWIW, I used to enjoy the craft beers of Oldenberg Brewing Company. Are they still in business?

@@gaiustacitus4242 I believe they went belly up ... though Cincy with its German heritage never lacks a good brewery. Rhinegeist Brewery seems to get a lot of attention ... though I tend to be a "brown water" kinda guy.

I am still learning, I will do my best to improve

Thank you for the kind words. I am really pleased with the control box set up. The box was actually built by Nick at www.solafidedesignskc.com/. My wife is an electrical engineer who used to do machine installs on factory floors... she said she would use Nick's box on one of her installs. I don't think Nick is publicly offering them ... the proved to expensive to compete in a consumer vs industrial environment. But I don't regret going industrial. I will put together a short piece on the control boxes and their installations

As noted, I bought my spindle from Nick at www.solafidedesignskc.com/. He is no longer offering my spindle due to cost....seems the price point was too high for my system. I really try to be the buy once cry once kinda guy. The bottom line is Nick really supports his products.