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Type: Posts; User: Jim Dawson

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    Re: Drill recommendation, please

    We have had very good luck with the M.A. Ford Twister drills in 6061 https://www.maford.com/product-details/22931250
  2. Re: What is the best way to learn how to optimize a CAM program's parameters?

    The reason for no textbooks is that every CAM program is different. Most CAM software has tutorials available, but sometimes the explanations are a bit lacking. Normally the way I do it is to set...
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    Re: Pause after retract on g81 drilling

    If you add these lines to the post you should get the option for Use Canned Cycles on the setup, it worked for the Mach3 post. Very cool.

    // user-defined properties


    useCycles: true, //...
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    Re: Pause after retract on g81 drilling

    :cheers: Congratulations!

    I looked through a number of different posts, and the only one that I could find that has the Use Canned Cycles option is the Haas Turn post, which is the one I use most...
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    Re: Pause after retract on g81 drilling

    Try creating another post and set Use Canned Cycles to No. See if that makes a difference. It will create a huge file, but it takes out G81 and does it all in G1 moves.
  6. Re: are there any code to tap 1" pipe thread?

    It's possible to do this with a thread mill cutter, or I guess you could use a fly cutter if it was small enough.

    Does your machine controller support thread milling? What CAM software are you...
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    Re: Pause after retract on g81 drilling

    Post a couple of the G81 lines. I could be that the controller is just figuring out what to do next, dunno.
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    Re: Cambam limitations.

    CamBam does not handle SVG natively. Someone on the CamBam forum has a SVG plugin available for download, but I know nothing about it. V1.xxx of CamBam will import raster images and do an edge find...
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    Re: Cambam limitations.

    I have used CamBam for a number of years. It works very well for 2D and 2.5D operations. I believe it will do full 3D but I have never done it. I still use it for quick jobs, just last evening in...
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    Re: What do you call these black knobs?

    Maybe try here https://www.mcmaster.com/knobs
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    Re: Slightly sizing down a carbide drill

    Maybe the designer should be introduced to LocTite products or cyanoacrylate adhesives :D

    At <$2.00 each grinding would be worth a try I guess.
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    Re: Slightly sizing down a carbide drill

    First I think I would go back to the engineer and have a chat, maybe a more standard size would work. It seems a bit strange that the spec would be an odd size.

    The odds of a hole being drilled...
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    Re: Lexan Window Thickness

    The only advantage I would see is that would be more scratch resistant. But the impact resistance of Lexan is greater, and it may be less cost. I've not had any problems with the plastic windows in...
  14. Re: Multicam MG Series 304 - conversion to run with Mach3?

    Pull a motor off and compare the mounting dimensions to a standard NEMA 34 stepper. A 750W servo motor would replace those. On the other hand, if the existing motors and drives are working, you can...
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    Re: Lexan Window Thickness

    I would use 1/4 inch. Pretty tough stuff. I think 3/8 inch Lexan will stop a .45 ACP round point blank.

    The way that window broke would indicate that it is not Lexan, but rather is acrylic. Not...
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    Re: 5um vs. 1um linear encoders

    In a perfect world a properly tuned servo will exactly follow the commanded motion profile, without any lead or lag error, and stop at the exact encoder pulse that was commanded. In the real world,...
  17. Re: Galil Motion Control CNC Router W/Delta Servos Few Questions

    What 44 pin I/O board are you using?

    EDIT:
    What is the full part number for your DMC-4153? Does it have the high power outputs? You can read the full part # using the ID command I think.
    ...
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    Re: 5um vs. 1um linear encoders

    I would use the 1um encoders. I have them on all of my machines, both for a DRO on my manual lathe and on my CNC mills and had them on my CNC router also. I will also be installing them on my CNC...
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    Re: Inverter Fault

    That being the case, I would check the electrical diagrams to see what terminal triggers an external fault on the inverter. Then follow that wire back to the source.
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    Re: Inverter Fault

    The real question is: Is it a real fault, shown on the inverter display, or does the controller just think it's getting a fault signal from the inverter? The former may be a problem with the...
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    Re: Shop cooling

    This might be good for reading https://www.newair.com/blogs/learn/common-swamp-cooler-complaints-how-to-troubleshoot-your-evaporative-cooler

    It depends on you local climate. Swamp coolers work...
  22. Re: Galil Motion Control CNC Router W/Delta Servos Few Questions

    I'll tackle part of this, I have no experience with Mach4, but over 20 years experience with Galil products. I use Galil in all of my machines.



    A DMC-4050 would have been a better choice,...
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    Re: HF Sand Blaster.

    I have the same HF sand blast cabinet. I modified the nozzle assembly, and finally got it to work to my satisfaction. I also built a new dip tube assembly, the original dip tube was made upside...
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    Re: Buying an apartment

    :D :cheers:
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    Re: Need tapping help

    A #1 drill will give a 50% thread depth, typical in SS for non-critical applications. If there is no call-out for thread geometry and fit, then 50% thread depth is normally OK, especially when going...
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