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Type: Posts; User: ChrisAttebery

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  1. Replies
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    Re: Chris' G0704 build

    I guess I never updated this thread after the phantom cycle starts. I re-wired and rerouted my cycle start, pause, and E-stop switches with a new multi lead cable and grounded the shield to the...
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    Re: G0602 Stiff cross slide

    Try reassembling the cross slide assembly but leave the nut a little loose. It might just be pulled off to one side or need to be shimmed up or down.
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    Re: G0602 Stiff cross slide

    I had a similar problem with the cross slide on my chinese 13x40 lathe. It turned out that there was a burr on the edge of the threads on the screw starting about 2" from the end. I took the screw...
  4. Re: G0704 - Chasing a more quiet spindle still

    My spindle was pretty noisy when I converted to Hoss' L belt drive. The 3D printed bushing he designed reduced the rattle between the spindle and quill drive but it was still pretty loud IMHO. Last...
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    Re: PM-25 recommended feed and speed?

    Do yourself a favor and buy FSWizard Pro. It's well worth the $20 he charges for it. I run about 80% of his recommended feed at the maximum speed I can.

    5x depth is pretty extreme.
  6. Re: CNC Toolpath Strategies for Smaller Machines

    BTW: I have used 3/8" 3F carbide end mills in the past. They worked great but cost about 3X what the 3/8" 2F HSS end mills do. I decided that for my needs it wasn't worth the extra expense.
  7. Re: CNC Toolpath Strategies for Smaller Machines

    No idea. You're posing in the Benchtop machines forum. Find the correct forum for your machine.
  8. Re: CNC Toolpath Strategies for Smaller Machines

    mcardoso,

    I have a G0704 with a 1100W motor on it. I ran it at 4500 rpm for a few years and then bumped it up to 6750 rpm last year. I generally shoot for a MRR of 1.3in/min. I use high quality...
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    Re: Chris' G0704 build

    I tend to leave my machine up and running so that if I get an order I can just throw some material on the machine and run a job.

    After I updated the enclosure for my mill the Cycle Start button...
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    Re: Chris' G0704 build

    I got the belt installed on Friday. I ran the spindle at 3500-6750 rpm for about an hour on Saturday morning to break in the belt, pulleys and bearings. Up to 5500 rpm the spindle is much quieter...
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    Chris' G0704 build

    I finished the pulleys and a new slightly taller motor mount this week. Today I installed everything. I just need the correct length belt to show up and I'll be cutting chips again.

    ...
  12. Re: Sources of aluminum in north California

    I use South Bay Metals. Most of what they sell is new. They don't have a lot of scrap.

    I also use Campbell Metal Supplies in San Jose. (569 Charcot Ave.) They mostly sell new but they also have a...
  13. Replies
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    Re: Chris' G0704 build

    When you have a mill there will always be projects where you really need a lathe. I had a 12x36" belt drive lathe before I put together my G0704. I wasn't using it much and decided that I needed the...
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    Re: Chris' G0704 build

    I've been pushing the machine a little harder now that it's in a better enclosure to keep the chips in. Yesterday I was using a 1/2" YG1 2 Flute mill for aluminum at 4500rpm, 45 IPM, .370" DOC and...
  15. Re: Fog Buster If you have one, questions?

    I've never used the commercial unit but I built one 5-6 years ago for my G0704. I use a 1/8" OD/ 1/16" ID nylon tube inside a 1/4" Loc-Line as the nozzle. I run it at 90PSI but it isn't too loud. You...
  16. Replies
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    Re: Chris' G0704 build

    I got the enclosure completed. I made a keyboard tray from the Corian sink cutout from our countertop. I need to mount the E-stop and route the wiring for the keyboard, mouse, MPG, and monitor.
    ...
  17. Replies
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    Re: Chris' G0704 build

    Yes it's a 50A 220v outlet. All of my big tools run off that outlet. It was in the right hand corner of the previous enclosure. I moved the machine to the right about 30" before I started this round...
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    Re: Chris' G0704 build

    I'm looking for a window gasket that will work. I've been using a home built fog buster for the last 5 years and it's met all of my needs. My previous coroplast enclosure wasn't sealed on the bottom...
  19. Replies
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    Chris' G0704 build

    I from finally received all of the parts for the enclosure yesterday. I spent a couple hours drilling the mounting holes in the bottom rails, assembling the frame and inserting the back and right...
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    Re: Another G0704 Conversion

    Nice work. I'm in the midst of an enclosure build myself. I'm strictly a mist coolant guy, but those chip trays are a great idea. I'll have to look at how to incorporate that into my design.
  21. Re: How to have Mach3 use an Auto tool zero location on the table for Zero of tools.

    Mach Standard Mill will do what you want. I've been using it for about 5 years.


    Sent from my iPhone using Tapatalk
  22. Replies
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    Re: Chris' G0704 build

    Here's the design I've come up with:

    384294

    On the front there will be a single 48" wide polycarbonate door with a 12" fixed panel at the right end. The door can slide all the way off if...
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    Chris' G0704 build

    It's been a while since I've posted here. My product sales have dwindled and my business has evolved into more of a mechanical design consulting service.

    I still do some machining here and there...
  24. Re: Is a treadmill motor a GOOD VFD / 3 phase induction motor substitute?

    Honestly, I cut G10 and aircraft plywood with diamond cut router bits much more often than aluminum these days.

    I can push my machine harder (~1.4 cu in/min) but at this MRR I don't feel the need...
  25. Re: Is a treadmill motor a GOOD VFD / 3 phase induction motor substitute?

    I burned up a couple treadmill motors after I completed my conversion. After the second one I bought a 1100W DC motor commonly used on the PM25 mill and 11x26 lathes. I've been using that motor for 4...
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