Search:

Type: Posts; User: ForgeOwl

Search: Search took 0.00 seconds.

  1. Replies
    11
    Views
    6,359

    The last casting had adequate venting and had...

    The last casting had adequate venting and had just as many air bubbles. They appeared at the lowest points of the mould, so running a vent underneath the pattern might not be a bad idea.

    My...
  2. Replies
    11
    Views
    6,359

    After some more research, it seems that the...

    After some more research, it seems that the problem I'm having is to do with gas porosity leaving bubbles in the metal. I'm working on methods to de-gas my metal before pouring and will report back...
  3. Replies
    11
    Views
    6,359

    Here's my idea for sprueing up. Hopefully it...

    Here's my idea for sprueing up. Hopefully it should help.

    The round chamber at the bottom should catch any heavy particulates as well as provide a unimportant place for any oxygenation caused by...
  4. Replies
    11
    Views
    6,359

    392923 I've recast the frogs I was making. ...

    392923

    I've recast the frogs I was making. The picture is from right after knocking off the mould.
    While a much better cast than the last batch, the pinhole flaw issue is still present. It...
  5. Replies
    11
    Views
    6,359

    I wasn't using a flux. The shells should have...

    I wasn't using a flux. The shells should have been dry they had been baked in the furnace, but they had been sat on my shelf in my studio for a month or so. I'm not sure if any condensation or...
  6. Replies
    11
    Views
    6,359

    As you can see from the pictures, the surface of...

    As you can see from the pictures, the surface of the metal is very rough. They were all cast at the same time, and while the flaws are present on all, it's worse on a few and hardly noticeable on...
  7. Replies
    11
    Views
    6,359

    Of course. I'm working with bronze, and doing...

    Of course. I'm working with bronze, and doing lost wax casting. I use ceramic shells rather than investment. The pieces I cast tend to be quite small - 3kg or less.
  8. Replies
    11
    Views
    6,359

    Pitting and pinholes in cast

    I was wondering about how to minimise pitting in a cast. A recent project of mine ended up with a fair amount of tiny holes, almost like freckles or skin pours.

    What causes it?
    How can you...
  9. Replies
    12
    Views
    6,382

    Managed to cut it into four pieces. A hacksaw...

    Managed to cut it into four pieces. A hacksaw did the job. It took around an hour of sawing for each cut. I have a nice pot of bronze powder to show for it. Enough for a small resin cold cast.
  10. Replies
    12
    Views
    6,382

    8x6x26cm and shaped a bit like a toblerone with a...

    8x6x26cm and shaped a bit like a toblerone with a flat top.
  11. Replies
    12
    Views
    6,382

    Cutting Ingots down to size

    I bought 7kg of Bronze (3% silicone) recently. It arrived as a single ingot. It's far too large to fit any of my crucibles, so I need to cut it somehow. It's too thick to saw by hand. My only...
Results 1 to 11 of 11