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Type: Posts; User: awerby

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  1. Replies
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    Re: Bar stock various sizes and types

    The pictures show rod, which is round in cross-section, not bar, which is rectangular.
  2. Re: Hobbyist in south bay area / San Jose, seeking rental time on mills

    If Oakland's not too far to travel, you could come over and play with milling machines at my place. Can you speak Linux?
  3. Re: Somehow my machine is only accurate when running handwritten g-code

    It sounds like it's applying an offset to run inside the rectangle instead of outside it. If your hand-written Gcode works, but the Fusion-generated code doesn't, it's not likely to be a Mach4...
  4. Thread: meaning of SBP

    by awerby
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    Re: meaning of SBP

    Shop Bot Program
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    Re: Anybody know what brand this bandsaw is

    Does it work?
  6. Re: Bench Top CNC for cutting Copper/Brass sheet?

    Don't waste your money on a $500 CNC mill; it's just going to disappoint you. Instead, send the work out to someone with a waterjet or fiber-optic laser cutter; you should be able to get quite a bit...
  7. Thread: Totally Lost

    by awerby
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    Re: Totally Lost

    If the code as written seems to be sending the tool to the right coordinates at the outset, but instead it's going somewhere else, I'd suspect some of those G-codes at the top of your program. Try...
  8. Re: Running my CNC machine in a van with a portable gas generator?

    There's going to be lots of foam dust Im told, if my mobile vaccum doesnt get the job done, would there be a way to hose down everything (except motors and router) and have it collect on to a trap...
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    Re: CNC Shaft Couplings, Whats out there?

    I haven't used that particular brand, but that looks like a good coupler to me. I certainly don't see a NEMA 34 motor breaking it, if that's what you're worried about. The usual thing that causes...
  10. Re: Working man with goal - open floor - stone tile portable cnc

    That first set of bits would be useless for cutting stone in a CNC machine. They are intended for fine shaping of fairly hard materials, but the diamond is plated on and quickly wears off. The 180...
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    Re: Enquiry about CNC router

    No. The ball screw needs to get thicker as it gets longer, or it will tend to "whip", which introduces resonance and shaking, and can distort the screw in extreme cases. Linear guides need to get...
  12. Re: Trying to cut plexiglass using my desk-CNC 1310: Problems/Advices

    If you don't need to use actual Plexiglas - a brand name for cast acrylic sheet - I'd suggest substituting Lexan (TM) or generic polycarbonate sheet. It machines much better and doesn't tend to melt...
  13. Re: Working man with goal - open floor - stone tile portable cnc

    That bit looks pretty aggressive, but I would only use it in very soft stone, like soapstone, alabaster or limestone. The problem with this type of bit is that the diamonds are all on the outside,...
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    Re: Copper Experience

    Copper and other non-ferrous metals don't anneal the same way as steel. While heating steel up to red heat and letting it cool slowly will relieve stresses and soften the metal, with copper you need...
  15. Thread: z axis creeping

    by awerby
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    101

    Re: z axis creeping

    Could the encoder be loose on the motor shaft? If it was moving relative to the motor, the servo system would rotate the motor to compensate.
  16. Re: Best method for cutting terrains out of foam

    Did you want these "terrains" to be fully 3D, or a series of flat planes stuck together with a stair-step profile like architectural models typically have? If it's the latter, you can use one sort of...
  17. Re: 4th axis machining below the rotational axis

    The Original Poster was talking about toolpaths that would dip below the Z zero line (set as the rotational axis) in the course of a continuous routine. I'd love it if DeskProto could do that, but...
  18. Thread: cnc pipe makers

    by awerby
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    Re: cnc pipe makers

    If you want to make sculptural designs and carve them in briar, I'd suggest Geomagic Sculpt software along with the Touch haptic arm for making the models. It's far and away the best system for...
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    Re: milling part off in Z

    As well as work-holding (cheap vises tend to tilt the work as they tighten) look at tram. The bed of the mill needs to be in the same plane as the sweep of the spindle. You can test it by putting...
  20. Re: Looking for some insight on machining carbon fiber sheets

    You're right; dust is going to be a problem if you do this dry. I doubt you'll be able to effectively remove it in your home shop. I'd say keep doing it under water, the way you've been doing it...
  21. Thread: cnc pipe makers

    by awerby
    Replies
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    46

    Re: cnc pipe makers

    Are you talking about smoking pipes or plumbing pipes? Tobacco pipes or pot pipes? There are lots of new designs being tried out in the cannabis industry, if that's what you mean; everything from...
  22. Re: Sterling Silver - Turning (lathe) speed and feed rate suggestion

    Without knowing the diameter of your sterling parts, it's hard to specify spindle speeds or feed rate. As diameter increases, the spindle speed should go down, all other things being equal. What you...
  23. Thread: CNC not working

    by awerby
    Replies
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    Re: CNC not working

    Have you asked these questions of the people who sold you this machine? What did they tell you? If they wouldn't help at all, please share their name, so others won't find themselves in your position.
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    Re: Buying an apartment

    Does it have space for a CNC machine? Neighbors who are tolerant or deaf? Heavy-duty floors that can handle the weight of a multi-ton mill?
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    Re: Z-axis(?) Gouging Wood

    Do you notice any vibration at the tool tip, as the cut progresses? Or is the spindle rock-solid, not deflecting even if you lean on it hard? Cutting wood puts a lot of strain on the machine, which...
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