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Type: Posts; User: Chris D

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  1. Replies
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    Re: Fusion 360 subscription changes

    I am not sure I understand some of the comments posted here.

    It seems as though some of you are complaining that a company wants to charge for its product that you use. How many of you work for...
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    Re: Aluminum Chip Welding

    Cutting "Aluminum" doesn't really say what you are cutting. There are many alloys of "Aluminum" and they all cut VERY differently. The alloys that are good for bending and forming are horrible for...
  3. Re: Which one will be better for parting/cutting metals?

    Without question, a bandsaw would be the choice. Power hacksaws have all but disappeared for a reason, they are SLOOOOOWWWWWWW.
    Chris D
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    Re: Need to flatten 5/8" thick aluminum plate

    It would certainly be a challenge to mill it flat with that much bow. It would require a lot of flips and special clamping to get it from the sides and no top clamping.

    I am currently pricing...
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    Re: Need to flatten 5/8" thick aluminum plate

    I contacted the vendor and was informed that Alcoa's standard is .1" longitudinal and .125" transverse and they will not replace it.

    Oddly, other vendors specs are below .032" for this size plate....
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    Re: Fixed Gantry Build

    Here is my thought...

    Large industrial machines that are configured like this are called either a Bridge or Double Column machine. Gantry machines are "moving bridges".

    Just a pet peeve of...
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    Re: Need to flatten 5/8" thick aluminum plate

    Hi guys,

    To clarify my point.

    The plate is 27" x 48", the travels of the machine are 19.4" x 39.5"

    The plate is shaped like a flat "U". I could mount it as a "U" or I could mount it as an...
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    Re: Need to flatten 5/8" thick aluminum plate

    unfortunately that won't work, the table is larger than the travels of the machine.

    Thanks though.

    Chris
  9. Replies
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    Need to flatten 5/8" thick aluminum plate

    Hi Folks,

    I screwed up and went cheap with the purchase of aluminum for the table of my router. I purchased 5/8" mill finish 6061 aluminum plate that is 27" x 48". I rolled the dice in hopes it...
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    Re: Amera-seiki machines?

    Model and escorts at IMTS!!!!


    Ha, that is the first thing I thought of too when I saw Ameri-Seiki.
    As for the machines, always consider the country of origin when trying to determine how good...
  11. Re: UCC Software - Turning? -- Multiple MPGs?

    Thanks Gerry,

    I was afraid of that. I guess it is time to look into LinuxCNC.

    Chris D
  12. UCC Software - Turning? -- Multiple MPGs?

    Good morning all,

    I looked over the website and even the DOCs but still not sure (perhaps because I want this)...

    Is the UCC software able to control lathes?

    Can two MPGs be used at the same...
  13. Re: Can a VFD be used to add variable speed control to this type of motor?

    I was afraid of that.

    Thanks for the info Mactec54.

    Chris D
  14. Can a VFD be used to add variable speed control to this type of motor?

    Good morning all,

    I have a Rong Fu 31 mill/drill machine. For a bench top machine it is not too bad and has served be well for the past 15 years or so. I recently upgraded the DRO to the machine...
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    Poll: Re: Global Warming Poll

    I believe 100%, without a doubt or a question in my mind we are experiencing climate change. We have been since the earth was created. Human caused, possibly, naturally occurring, has been proven...
  16. Thread: MACH3/FEEDRATE

    by Chris D
    Replies
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    Re: MACH3/FEEDRATE

    Looking at the program,

    N1770 G0 Z1.75
    N1780 G1 Z1.6875 F20
    N1790 G93
    N1800 G1 A360 F14.1471060526129
    N1810 G92 A0


    I see a Z movement on line 1780 - does that line run fine?
  17. Re: Lost drill hole size accuracy in drilling operations

    One more thing, have you verified that the material you are cutting today is the same as the material you were cutting last time? A lot of alloys look the same but behave very differently when it...
  18. Re: Lost drill hole size accuracy in drilling operations

    I agree with the comments that something changed between when it was working and now. However, the original process, based on the small amount of details provided, is fundamentally wrong. Drilling...
  19. Re: How is everyone building a DIY CNC router system that maintains cutting tolerance

    Plywoods (of this type) have been used for rifle stocks for many years. Often they are dyed green or red, can't recall seeing any in "natural" color. They are far more stable than natural wood and...
  20. Mach3 - MPG - Precise control as it is on an industrial CNC...

    Good morning all,

    I have MACH 3, been using it for a decade or so. My current setup is: Windows 10, Mach 3, ESS (Ethernet Smooth Stepper). For the MPG, I am using a FANUC MPG wired up using "A"...
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    Re: Are Metal Shavings / Dust Hazardous?

    The state of CA states that virtually everything causes cancer - look for the warnings in all you tooling catalogs and websites.

    Chris D
  22. Re: How is everyone building a DIY CNC router system that maintains cutting tolerance

    There are many issues with building a machine that is accurate and true to the axes (Square and flat). Industrial machines are built using lasers and master squares for alignment and flatness. Even...
  23. Re: How is everyone building a DIY CNC router system that maintains cutting tolerance

    Your assumptions are correct, you don't just bolt together a bunch of extrusions and achieve <= .001 accuracy or repeatability.

    You mention your an engineer, what type of engineer are you?
    ...
  24. Re: Mach3 - ESS smooth stepper - Huanyang Chinese VFD - Mach 3 e-stopping???

    A bit more information that may help others...

    There was a bit of discussion as to how to ground shields and star grounding etc. I do not wish to continue that discussion or further debate on...
  25. Re: Mach3 - ESS smooth stepper - Huanyang Chinese VFD - Mach 3 e-stopping???

    Update and current status...

    There were two ways I was able to monitor the problem: False triggers of buttons from the operator panel and my Scope. Being that the false triggers appeared to come...
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