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Type: Posts; User: canman77

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  1. Re: Proximity Sensors with MX4660 and Mach3, want some troubleshooting help

    I have a bunch of transistors lying around, I don't know if any are 2N2222...mostly 2N5088/5089. (I used to build a lot of guitar pedals)

    It's worth trying just for fun, but I think it'll be best...
  2. Re: Proximity Sensors with MX4660 and Mach3, want some troubleshooting help

    Interesting...I did test for continuity between the wires will connected and powered on. I assumed it just worked like a switch, but it seems that's not the case. These things are pretty foreign to...
  3. Proximity Sensors with MX4660 and Mach3, want some troubleshooting help

    Hi everyone,

    I ordered a chinese proximity sensor from amazon the other day to try and get some homing switches set up on my 4x2 CNCRP machine. This one in particular: Amazon.com: Twidec /M18...
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    Re: Another Vacuum Table Question

    Slowly but surely, yes. I had read other posts recommending 1/2" mdf, but I have to assume they are using it as a bleeder board over a plenum instead of the box method I have employed. We are...
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    Re: Another Vacuum Table Question

    I think I've identified the source of the issue. It is my belief that the 1/2" board was not sufficiently supported, as others have already suspected. I cut the old board off and put a 3/4"...
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    Re: Another Vacuum Table Question

    Sorry for the late response guys...had to help a friend build up his road bike and then spent some time with the vacuum table. Before I go any further, I have been making all my cuts into baltic...
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    Re: Another Vacuum Table Question

    What kind of feedrates/depth of cuts are being taken in industrial applications? For comparison, I am cutting 150IPM at 0.3" DOC. I'd be interested to see how that compares to industrial cutting. ...
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    Re: Another Vacuum Table Question

    Thanks for the input and help guys. It is much appreciated. I would be very lost without your help. So, let me address your posts below:

    1) The baltic birch I am cutting is 1/2". Stiff for...
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    Re: Another Vacuum Table Question

    UPDATE:

    I ordered the motor, got it wired up and connected to a vacuum box that bolts to the bed of my machine. I have a vacuum gauge coming in the mail so I'll update later with how much vacuum...
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    Re: Another Vacuum Table Question

    I do make the same small part over and over, but it is nested with other parts that are larger. The small part is a little cupholder that attaches to a little desk, so I make one or two every time I...
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    Re: Another Vacuum Table Question

    That's exactly what it is Marv. Cost vs. compromise. To me (a small business with minor production), saving thousands by using a $150 pump and not getting the best suction makes more sense than...
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    Re: Another Vacuum Table Question

    That's a great point. I'm sure you've mentioned it earlier in the thread too, but thanks for the suggestion. How thick are you leaving your skin? I experimented with 0.02" yesterday and it seemed...
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    Re: Another Vacuum Table Question

    Hi Peter, cost is largely the issue. I have a few hundred I can allocate to vacuum holding right now, not a few thousand. And for the cuts I am making, a few hundred will do the trick.



    Right...
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    Re: Another Vacuum Table Question

    Marv, you hit on exactly why I'm looking at these motors again. They won't burn up...I don't really want to keep replacing shop vacs. Not to mention, the improved performance. I'll also pick up a...
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    Re: Another Vacuum Table Question

    Rather than start a new thread, I figured I'd update this one.

    I finally managed to build a vacuum box, only to test the hold down power a shop vac would have. I glued a bunch of MDF together to...
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    Re: Another Vacuum Table Question

    I've seen that number floating around quite a bit actually...4 of them on a 4x8. I have a 2x4 table, so I figure I'd only need one.

    EDIT: MARV, here is a link to the shopbot vacuums. I don't...
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    Re: Another Vacuum Table Question

    Thanks for the input guys. I feel like I need to clarify what I want to use the vacuum table for, and Peter touched on it. I just want to cut large flat panels with the vacuum (cabinet panels,...
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    Re: Another Vacuum Table Question

    So here is what I'm looking at so far, based on everything I've seen online. Will definitely refine the model. The inside of the box is as seen here:

    https://i.imgur.com/MCR36Im.png

    The...
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    Re: Help with Standard 4x2 Accuracy

    That's something I should look at as well...I haven't really measured my endmills. I'll do that this week and see what I find. I haven't had a chance to re-align everything on the machine, this was...
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    Re: Another Vacuum Table Question

    I did not get around to building a little vacuum test this weekend, time ran away from me and I had way too much to do. The second half of the week and this weekend will be a lot more open. It...
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    Re: Another Vacuum Table Question

    You guys beat me to the punch, my next question was going to be about lateral/cutting forces. From my reading online, it seems like that is a tougher number to figure out...not the cutting forces,...
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    Re: Another Vacuum Table Question

    lambodesigns, thanks for posting this. I've been doing a bit of research and haven't gotten around to posting here yet. I am planning on building a little vacuum table this weekend as proof of...
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    Re: Help with Standard 4x2 Accuracy

    Thanks for all that information, I appreciate it. I am planning on spending some quality time squaring up the rails this weekend. I was hoping to have time during the week but work has kept me too...
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    Re: Help with Standard 4x2 Accuracy

    I got the machine for cutting cabinet panels (I do the occasional cabinet job here and there and can produce far superior cabinets with CNC than with table saw!) so power and speed were the big...
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    Re: Help with Standard 4x2 Accuracy

    As I understand it, cutting conventional parts will generally come out a little smaller, and climb cutting will produce parts that are a little bigger, so I'm not overly concerned with the...
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    Re: Help with Standard 4x2 Accuracy

    OK, I just cut 4 test squares. 2 20" squares and 2 5.5" squares. Naturally, the 20" squares were measured with a tape measure, and any measurement short/long of 20" was estimated with calipers. ...
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    Re: Help with Standard 4x2 Accuracy

    Just wanted to keep a log here for those who may have similar problems later.

    Ahren contacted me from Avid CNC and is helping me troubleshoot. I knew they would eventually contact me, sometimes...
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    Re: Help with Standard 4x2 Accuracy

    If I remember correctly, yes...but I'm measuring with a measuring tape so it isn't exactly the most accurate method. I will go out and check in a few minutes.

    I forgot to mention, the other thing...
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    Help with Standard 4x2 Accuracy

    Hi everyone,

    I have been running a CNCRP Standard 4x2 machine for about a year and a half and have been thoroughly impressed. I am running it with a Hitachi M12VC, ethernet smoothstepper, MX4660...
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    Re: Another Vacuum Table Question

    Wizard and MARV: Thanks for the comments. Very informative. It is sounding more and more like a futile effort to do any kind of vacuum work holding for the cuts I am making...if I were simply...
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