Recent Content by Rotarysmp

  1. Rotarysmp
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    Where to get aluminium

    If you are not doing large parts, another nice source of nice clean casting stock is hard drive frames.
    Post by: Rotarysmp, Oct 21, 2023 in forum: Lost PLA casting
  2. Rotarysmp
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    Automotive Oval Air Filter

    Stunning workmanship. Thanks for showing all these castings. Really inspirational. Mark
    Post by: Rotarysmp, Aug 15, 2023 in forum: Lost foam casting
  3. Rotarysmp
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    Don't FALL into your crucible!

    Wow, I bet a lot had to go wrong for him to even be in a position for that to happen.
    Post by: Rotarysmp, Jul 19, 2022 in forum: General foundry chat
  4. Rotarysmp
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    Planer restoration - Zapins

    Lovely machine.
    Post by: Rotarysmp, Jul 1, 2022 in forum: General foundry chat
  5. Rotarysmp
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    Today I started a new pattern to make a metrology parallel/level

    Thanks for responding.
    Post by: Rotarysmp, May 30, 2022 in forum: Pattern making
  6. Rotarysmp
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    Today I started a new pattern to make a metrology parallel/level

    Just curious, how many times would you be able to to mould up flasks from the original wooden pattern before it wears out? I have only ever cast...
    Post by: Rotarysmp, May 30, 2022 in forum: Pattern making
  7. Rotarysmp
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    Smoothing coat for PLA?

    Thanks for posting that link. He recovered that casting really nicely.
    Post by: Rotarysmp, May 24, 2022 in forum: Lost PLA casting
  8. Rotarysmp
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    Today I started a new pattern to make a metrology parallel/level

    Nice pattern making.
    Post by: Rotarysmp, May 19, 2022 in forum: Pattern making
  9. Rotarysmp
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    Horizontal Band Saw Restoration - Zapins

    The single pole pair motor turns twice as fast with half the torque as the equivelent 4 pole pair motor. So the 2:1 reducer by halving RPM and...
    Post by: Rotarysmp, May 19, 2022 in forum: General foundry chat
  10. Rotarysmp
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    Forgot how to cast.

    Good suggestion, thanks. I machined the second casting as well... [MEDIA]
    Post by: Rotarysmp, May 8, 2022 in forum: Sand Casting
  11. Rotarysmp
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    Forgot how to cast.

    I bashed it with a hammer, but it laughed at me- I'll just chop it off, and weld on another skimmer. Thanks for the tip on sooting up the skimmer.
    Post by: Rotarysmp, May 6, 2022 in forum: Sand Casting
  12. Rotarysmp
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    Forgot how to cast.

    Thanks for your feedback Dennis. Confirms pretty much what I was thinking. Your critique of the skimmer was a good one. I started skimming too...
    Post by: Rotarysmp, May 3, 2022 in forum: Sand Casting
  13. Rotarysmp
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    Forgot how to cast.

    I took a second shot at it, and improved both the skimming, and gating... [MEDIA] Mark
    Post by: Rotarysmp, May 2, 2022 in forum: Sand Casting
  14. Rotarysmp
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    Horizontal Band Saw Restoration - Zapins

    You are making a fantastic job of that overhaul. It is going to be a great addition to the shop. Mark
    Post by: Rotarysmp, Apr 27, 2022 in forum: General foundry chat
  15. Rotarysmp
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    Making ductile iron in Pakistan.

    Even more than the accidents, I wonder what these guys lung x-rays look like? Average life expectancy?
    Post by: Rotarysmp, Apr 26, 2022 in forum: Sand Casting