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Type: Posts; User: Strostkovy

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  1. Replies
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    I did a powder coating job for $12 an hour...

    I did a powder coating job for $12 an hour because I had to. Terrible PPE, a "walk-in" oven, morons, and other such hazards. I worked hard every day but left that place the moment I got the chance.
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    Add capacitors to the primary side until the...

    Add capacitors to the primary side until the number that worries you goes down. Little will have changed, but you'll feel better.
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    I've used parts similar to this: CNC Linear Guide...

    I've used parts similar to this: CNC Linear Guide Rail Slide Stage Actuator Ball Screw Motion Table Stepper Motor | eBay

    They are not enclosed but are okay quality. I've never bought this exact...
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    Cheap VFDs don't tend to last long or work well....

    Cheap VFDs don't tend to last long or work well. Expect lots of electrical interference, annoying motor whine, and errors relating to the pressure switch disconnecting the load.

    Also,...
  5. If your capacitors are rated to full line voltage...

    If your capacitors are rated to full line voltage it doesn't matter.

    The resistor method works fine, but there are nuances to make sure your resistive voltage divider is stronger than your...
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    You can always go the chinesium route with a 1...

    You can always go the chinesium route with a 1 axis g-code controller (has various inputs and outputs. They're pretty neat, actually) and a premade stepper motor/ballscrew/profile rail mounted on an...
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    Our current shop is in a building previously used...

    Our current shop is in a building previously used for distribution of hard ciders. The damage to the concrete is insane. It etched through nearly half an inch in some cases, and left a very rough...
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    At our old shop we used epoxy floor paint....

    At our old shop we used epoxy floor paint. Reasonably durable and good for poorly finished concrete, but not as durable as the concrete itself.
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    We have a 40hp screw compressor with integrated...

    We have a 40hp screw compressor with integrated air dryer feeding into a 400 gallon dry tank. This gives class 1-4-2 air providing the shop. The tank has an inlet connection to be supplied air from a...
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    To those who did it properly, how much did the...

    To those who did it properly, how much did the engineer charge?
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    I have a hard time imagining that the wire feed...

    I have a hard time imagining that the wire feed printers will deposit material faster than a mill can remove it, and en equally hard time imagining that the machines will cost less per hour than a...
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    Can you slightly counterbore the holes to be a...

    Can you slightly counterbore the holes to be a loose fit for partial depth? Then use the VMC to place them then squish them all in with one press stroke?
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    You can, at best, remove the red caps and turn...

    You can, at best, remove the red caps and turn the motors by hand.

    The mechanical part of the machine is half, at most, of the robotic system.
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    I would argue that the least ambiguous term is...

    I would argue that the least ambiguous term is reduction ratio, turn ratio, or possibly drive ratio.
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    Another name for pitch diameter is datum...

    Another name for pitch diameter is datum diameter, if that helps find data. But just going by OD will get you close enough.
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    I disagree. Toothed belts and pulleys are more...

    I disagree. Toothed belts and pulleys are more expensive, run louder, are less tolerant to overload, and need more precise alignment. It might be entirely suitable for the unknown application, but I...
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    I feel like if that were true then they would...

    I feel like if that were true then they would fail at the tie in during tensile tests. Or maybe it is true and enough of the stronger filler diffuses into the base metal to make the narrow section...
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    I'll admit my structural experience is limited to...

    I'll admit my structural experience is limited to college, but I did pass the tensile and bend tests.

    Having also passed the pipe tests, why would you need a backer? Full penetration butt welds...
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    I'd overbuild the stand as a personal preference....

    I'd overbuild the stand as a personal preference. Not an engineer so won't give recommendations there.

    But an A frame can suffer from lateral weeble wobble, so be sure to gusset it very well. Even...
  20. One thing I haven't seen mentioned here is bent...

    One thing I haven't seen mentioned here is bent forks. You may not notice it when you buy the lift, but you'll hate life dealing with one fork lower than the other afterwards.

    Also, worn...
  21. Sheet metal on a laser can warp more than that in...

    Sheet metal on a laser can warp more than that in less distance if conditions aren't ideal. What's interesting to note is that it returns very near to straight once it cools fully.
  22. A wise choice.

    A wise choice.
  23. Are you positive your Z axis is calibrated...

    Are you positive your Z axis is calibrated properly and never drags? The capacitive sensors on lasers I've worked with in the past tended to drift over the years.
  24. I had a caterpillar forklift that ran just fine...

    I had a caterpillar forklift that ran just fine (aside from a broken ignition coil connector that had weird symptoms) at 18,000 hours. It got an oil change at 8000 hours and I think that's it.

    I...
  25. I use 48" forks on 60" sheets. You would think...

    I use 48" forks on 60" sheets. You would think the pallets would be made for 48" forks, but they aren't. About a third of the time the forks won't reach the third 4x4 and the pallet is all tippy...
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