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Type: Posts; User: Wrat

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  1. Replies
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    3,367

    Re: Silicon carbide aggregate?

    I'm not gonna call into question any of the well prepared numbers above, but I would like to point out perhaps a philosophical question.
    Is this a solution in search of a problem?
    I mean, if we had...
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    1,846

    Re: Help on PCB design layout

    PCB layout is a career occupation taking many years to master. But then, it's also well within reach of anyone.:D

    What you got there could easily be done on perf board. And if it can be done on...
  3. Re: Manual Machinist Wanted! Great shop! No pressure!

    I might be too dumb to work for you guys.
    Can't seem to find the location?..........
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    2
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    1,561

    Re: CNC articles translater needed

    I would be quite interested in this job. Having documentation written in proper English is always valuable in time, sales, and support. Please contact me. [email protected]
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    11
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    1,517

    Re: connecting EStop switch

    I ran and programmed NC machines back in the day.
    One of the things that i think they did right was clearly differentiate between Hold, Stop, and E-Stop. In a similar vein, the distinction of...
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    720

    Re: MasterCAM in Missouri

    Missouri is a big state.
    Where?
  7. Replies
    4
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    1,648

    Re: Desktop injection molding machine lever design

    Second class -- if that somehow matters.

    All such calculations are simply a matter of Force x Distance = Force X Distance, regardless of where the fulcrum is located.

    You'll need to know...
  8. Re: Dual 80/20 C Beam torsional rigidity question

    Being a charter member of the "more is better" club, and a lifelong subscriber to "Overkill Monthly" I'm one to think that chatter is always present unless there's sufficient mass to dampen it.

    In...
  9. Re: Dual 80/20 C Beam torsional rigidity question

    Rarely is the loading purely torsional, consisting of a moment around the beam.

    However, if all one is seeking is increased torsional rigidity, then absolutely yes, the box beam will be best,...
  10. Re: What do you can the mark left by an endmill and how to disallow it in my drawing

    First off, you can add about any note on the drawing you like. So that's up to you.

    Also, this can be averted by using circular path entrance and exit. Or, as easily, keep cutting until you get...
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    Re: covered bridge i-beam help.

    Sure, you'll be fine.

    Well, unless you're not.

    I'm not trying to be a jerk, it's just that you've got a lot of variables involved and precious little to go on.
    Will it stand up? Uh... stand...
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    917

    Re: Rod with threads strength?

    You're on the right track, however, I would add considerable margin of safety to it.
    1. You don't know how the threads were put there. Were they cut? Rolled? Before tempering? These things kinda...
  13. Re: PyCNC - first CNC machine controller on pure Python for Raspberry Pi.

    very cool. Just starting to wade through it right now.
  14. Replies
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    Re: Proper Table Vacuum Pressure

    You shouldn't be reading any pressure, because it's a vacuum. But approx. 30" of mercury (in/Hg) is the ideal. Seldom will you see over 26-27.

    If it's different anywhere throughout the system,...
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    Re: Not sure how to buy stuff that fits together.

    Every situation exists, but I've just never seen this one.

    That's because mating a heavy-duty pillow block with a lightweight tube is pretty uncommon when compared to say, using a ground...
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