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Type: Posts; User: Strostkovy

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  1. Replies
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    14,763

    We got a mill at work and I need to tool it up,...

    We got a mill at work and I need to tool it up, but have limited practical experience other than a resume mix up that had me running a mill with no training. On the bright side it took them 3 days to...
  2. The only reason they aren't economical to...

    The only reason they aren't economical to resurface is that you can buy them cheaper than the labor to resurface them. Not to mention the downtime of having no brake rotors.

    Sure, you can't...
  3. I will add that I at one point wanted to...

    I will add that I at one point wanted to construct a hot air popcorn popper, such that the popcorn would be blown into a bowl after popping to avoid burning. I did dabble with a direct butter...
  4. Sand or concrete are about as budget friendly as...

    Sand or concrete are about as budget friendly as it gets. If you need density maybe concrete with whatever steel scraps fit in there?
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    508

    I have in the past drilled an oversized hole,...

    I have in the past drilled an oversized hole, brazed it closed, then drilled and tapped that instead of the base metal. Works okay if you can't change the hardness of the material.
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    14,763

    The real pro stays in bed until someone throws...

    The real pro stays in bed until someone throws out a number big enough to get out of bed for.
  7. Replies
    254
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    14,763

    On the other hand this guy serves as a creative...

    On the other hand this guy serves as a creative outlet for all of the stress customers like him have caused all of us.
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    My only concern with flooded shielding gas is...

    My only concern with flooded shielding gas is that steel doesn't weld very well with straight argon, and tends to benefit from some amount of CO2. I don't know enough of the details to know whether...
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    What would be the best heat treating process...

    What would be the best heat treating process after this, and how much distortion do you think would result from stress relieving?
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    177

    It probably has a mechanical thermal switch...

    It probably has a mechanical thermal switch somewhere in there that could use replacing. Think of where it would get hot and look for a little thing with two wires. Could be a metal can, could be a...
  11. Replies
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    1,496

    Our welder is an Invision 352 MPa. I know a...

    Our welder is an Invision 352 MPa. I know a version of the gun works with our 255 and another version does not. They have incompatible connectors due to the encoder feedback. I am almost certain that...
  12. Furnace filters make a great prefilter but they...

    Furnace filters make a great prefilter but they allow many smaller dust particles through, and you will produce lots of fine dust. Two blowers may handle both filters.
  13. Replies
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    3,031

    As a guy who has worked for some of the hokier...

    As a guy who has worked for some of the hokier laser shops, send them a picture of what you have and what you will accept. It goes a long way to not getting screw ups.
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    1,496

    Yes, the first welder was $5k from an artist who...

    Yes, the first welder was $5k from an artist who couldn't really set it up right and who was also being sent to collections by airgas. Second one we bought new, and you have to do a lot of welding...
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    1,496

    Some welds. Some are by me, some are by others,...

    Some welds. Some are by me, some are by others, one is a repair. Either what we had lying around for me to take a picture of or what I had in my phone for reference for fit up changes.
    ...
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    1,496

    This is our setup 314287 The first step to...

    This is our setup
    314287

    The first step to dialing in a push/pull gun is to make sure your power supply is set to the proper wire size and mode. In the case of our welder there are settings where...
  17. Replies
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    801

    Don't make ball end allens, as the ball ends will...

    Don't make ball end allens, as the ball ends will get stuck. Radius the end for easy insertion, but make the weak point much higher up so you have enough stub to pull on.
  18. Ball screws are back drivable. With the motor...

    Ball screws are back drivable. With the motor mechanically disconnected (or left in place depending on gear reduction) give the backgauge a good shove. If it backdrives, then the uts should be fine....
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    We do a lot of 1/4" aluminum welds with lots of...

    We do a lot of 1/4" aluminum welds with lots of different joint types and all visually appealing welds. We pretty much always mig weld them with a miller pulse on pulse push/pull gun, that we keep...
  20. Furnace filters absolutely suck. You want a HEPA...

    Furnace filters absolutely suck. You want a HEPA filter. There are many hepa filters available on ebay in large enough size for your final stage filter.

    I don't know what you have for static...
  21. That's not really how degaussing works. You need...

    That's not really how degaussing works. You need an AC current that initially produces a magnetic field stronger than the magnetization, that then slowly tapers off. Think of it as wiggling the...
  22. So the two screws are driven by a single motor? ...

    So the two screws are driven by a single motor?

    Check the pulley isn't skipping on the keyway. That can happen if the setscrew is driven into the keyway with no key installed.
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    Honestly I wasn't worried about critical speed so...

    Honestly I wasn't worried about critical speed so much as the speed of the steel nut riding on the steel thread. That critical speed is surprisingly low though.
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    Max speed of acme leadscrew

    I'm whipping up a general purpose shop press to do the operations our press brakes aren't currently well suited for. This is includes pressing in bearings, dishing plate, bending thick steel,...
  25. How does it home? We had a press brake servo that...

    How does it home? We had a press brake servo that jumped in complete turn increments. It turned out to be a bad connection between the encoder and the controller. This particular system had a not...
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