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Type: Posts; User: kdoney

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  1. Replies
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    Re: Chinese CNC-machines, crap or good?

    It depends on how much you have to spend. Even in China there are differences in quality based on price.
  2. Replies
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    314

    Re: Blueprint to gCode conversion?

    What is a manufacturing degree?
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    1,178

    Re: plasma gearing question

    The precision of the movement for a 20 pitch rack and pinion system doesn't change with the ratio of the gearing. The efficiency of the motor changes but I don't think that's what you're asking. You...
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    2,137

    Re: What no Cyclematic lathe forum?

    I'm sure this is just spam but you can create a forum all by yourself. And then you and the other one guy who bought one of these can talk to each other through it.
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    2,841

    Re: Can I resell Laser Machines

    If you are worried about getting sued the answer is

    No matter what you do or what you say to the buyer
    No matter how STUPID the buyer had to be to hurt himself
    Even if the buyer violated the law...
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    196

    Re: Automated Techniligies/CNC4PC CNC Probe

    There's a shock, something doesn't work which you got from AT and CNC4PC and you have to go to a forum for help.
  7. Replies
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    1,385

    Re: Amazon Special Modular CNC Platform

    I assume you have SOME skill when it comes to fabrication since you are going to use the machine for fabricating. I would suggest you build your base out of tubular steel welded together. It is VERY...
  8. Re: To many spindles on ebay. Any one have a know good suppler?

    It doesn't really matter who you buy it from, they all come from china with no support so you might as well buy it directly. If you want someone to sue if it doesn't show up that will cost you extra....
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    Re: Lead shine Customer Service Nightmare

    Gee, lousy support from china?
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    795

    Re: Chinese ATC BT30 Spindles

    I have one with the chinese pneumatic drawbar. It dropped right into the BT30 spindle mount of my Syil linear x6. Everything is fine but the power required seems to be excessive, especially when...
  11. Part on my new pdb that I have no idea of what it does.

    There is a cup on the side of my new pdb that I don't know what to do with. It might be an oiler. The picture I have of one being used looks like it has oil in it.

    Any help would be appreciated.
  12. Replies
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    849

    Special tooling for automatic turret

    Since tools in a turret have to approach the workpiece from one angle, wouldn't tools have specialized shapes? For instance, you would have to make 2 tools one for facing and one for turning on a...
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    576

    Lathe tailstock barrel keeps turning

    This is on a new machine 11X26? something from Grizzly. After center drilling I try to drill with a small bit in a tapered chuck in MT3 tailstock. The barrel keeps turning, it grabs the screw from my...
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    Re: Ball screw dimensions

    Most of the chinese ball screw kits are listed and have drawings at https://www.automationtechnologiesinc.com/
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    Re: CNC chinese companies how i choose

    Forget anything from china. The only way, at this point, china is going to save you money on a router is if they are selling crap. US people are selling good reliable products at just above cut-rate...
  16. Re: What size does my aluminium extrusions need to be?

    You should be able to see what the other builders are using just by looking at their descriptions. CNC Mill Router Engrave 24"X24" | eBay
    is a good example from a reputable builder. (I have no...
  17. Replies
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    Re: starting our G4003G conversion.

    I just started the same one but it's a 4003 and I am replacing the motor and eliminating the gear train. 3 hp ac with VFD directly coupled with the spindle. I am still thinking about the cnc portion....
  18. Re: Harbor Freight CNC conversion questions - HELP PLEASE.

    You should buy the best mill you can start with. If the budget max is 3k you should only spend 1.5k on the machine. The electronics for any machine which is going to do steel quickly is another 1k...
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    457

    Using a machine torch by hand

    I bought a spectrum 875 with machine torch and occasionally need to cut something small and simple. Is there an easy way to use or convert the machine torch so it can be hand held?

    Kevin
  20. Re: Building plasma table from military generator skids

    I have a few questions. It looks like you have rails going from left to right in the area that, I guess, you are going to run your plasma cutter. Are you going to use a vacuum table or water table?...
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    Re: Tube Cutting Machine Advice

    For that thin of tubing I would use a manual tube cutter like

    RIDGID 151 Tubing Cutter-31632 - The Home Depot

    If you have many tubes to cut, then let me know. I think I've seen an automated one...
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    Re: G0704 Saddle Gib Adjustment Problem

    I would file as little of the gib as necessary.
  23. Replies
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    1,673

    Re: G0704 Saddle Gib Adjustment Problem

    When you first took it out of the crate, did it work? I assume you're talking about the spindle axis. Have you made any changes to the head?
  24. Replies
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    Re: Jack's G0704 mods

    Two of the best site for 0704 info include a belt drive
    G0704 Belt Drive DVDROM
  25. Replies
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    Re: Noob here looking for some direction...

    .01 mm is 0.000393". Less than 4 tenths. I'd be willing to bet your bed isn't precise to within 4 tenths over half of it's length. I have 2 denford oracs right now I am converting to mach4 and I will...
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    Re: Milling machine history?

    Metalworking milling machine?
  27. Replies
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    558

    Re: Noob here looking for some direction...

    You have to give us something to work with. When you only specify one dimension (18") on a lathe, that usually means the swing. A lathe with an 18" swing is massive. I am assuming you mean the z axis...
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    Re: Chinese laser tube manufacturers

    Just make sure you can return them when they show up damaged. A large percentage of tubes not in machines are damaged at the factory :-) or shipping.
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    Re: Final Year Project Large CNC

    If, as you say, "The machine will have only small forces", then the base of the guide will support the working force and the only requirement will be to mount the guide straight and level. If the...
  30. Thread: I'm desperate

    by kdoney
    Replies
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    3,674

    Re: I'm desperate

    You've given it a fair try. Forget it. Go to work for someone and earn enough money to buy the machine you can't build. You don't have the nature or nurture to do this kind of work. What did you last...
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