Welcome to my FlamingFurnace, backyard metal casting blog.

Hi everyone, I mainly focus on metal casting projects using recycled scrap aluminum and other accessories in the pattern creations.
Aluminum is a very versatile material and I would like to promote the awareness of aluminum recycling via different metal casting projects.

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Saturday, October 23, 2010

Aluminum Sand Rammer

This is my second sand casting after a few experiments some successful other less with sea sand. last week I got 25kg Petrobond sand and I have to say their is no comperession and I am realy satisfied with the results.
This time I wanted to make an Aluminum Sand Rammer for my sand casting projects. I was thinking of making a pattern from wood and then I came across hard wood stair banister that was "waiting" in my shed for special occasion. Just by looking at it I could see the tool that I was looking for in my head. I cut it to a good working size and beveled one side for easy ramming of the flask corners. I also made a new wooden flask for this project.

I started by placing the pattern in the Drag and filling it with Petrobond ramming it well.
After drag was covered to the top I turned it over and used spoon to notch and smooth half way down the pattern. After smoothing it with the spoon I filled the Cope all the way up ramming it.

Next very gently I lifted the Cope and the pattern, Nerve wracking job. Beautiful result ;-)
I made pouring sprue to feed the molten aluminum in and small vent hole.
I used a clamp to keep Flask tight and poured the molten aluminum into the flask and the extra into the slim ingot tray that I welded.

Now this is the hardest part, WAITING for the metal to cool before opening the flask...
Still a bit hot but the result of my second sand casting amazed me, BEAUTIFUL aluminum sand rammer. In the image you can see the Parting line between the Cope and Drag.
After light cleaning I have a new tool ready for use.

4 comments:

  1. This look great! Is the cavity empty or is there something else in it (like lost wax casting) to maintain the structure?

    ReplyDelete
  2. Thank you, cavity is empty I am using Petrobond (Sand and oil mix) It is very strong.
    To achieve this strength you have to use ramming tool or just a block of timber to pack all sand into flask.
    After taking the pattern out of the mold all you have to do is pour the molten aluminum in and you have a new object made.

    ReplyDelete
  3. This is one of my favorite aluminum objects that I've I casted, it turned out very well.You decided to make an aluminum duplicate using it as a pattern.that is great idea. I think, You are doing great work with your post.
    Furniture Restorer

    ReplyDelete
  4. Hi, very nice piece.
    How much does it weight in kg?

    ReplyDelete

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