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NEW Dayton “Toilet Bowl” Oscillator Necks  Rate Topic 
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 Posted: Wed Nov 13th, 2019 05:02 pm
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Richard Daugird
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Started by cutting blanks last night. 6061-T6 heat treated aluminum. 




The rest is up to the machinist. I told him to take pictures in case anyone is interested in seeing the process. 




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 Posted: Thu Nov 14th, 2019 12:09 am
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Geoff Dunaway
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Process is educational and fascinating. Keep us posted. :up:

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 Posted: Thu Nov 14th, 2019 12:27 am
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Todd Adornato
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Indeed - seeing the machining process as it progresses would be most interesting!

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 Posted: Thu Nov 14th, 2019 01:21 am
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Mark Olson
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Billet parts. Please forgive me for asking, but wouldn't castings be more economical?
No disrespect intended. Nice project.

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 Posted: Thu Nov 14th, 2019 02:10 am
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Richard Daugird
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I have been wanting to try my hand at casting for twenty years. I even made a charcoal foundry ten years ago, but haven’t used it yet. This is a great project for CNC machining. 

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 Posted: Thu Nov 14th, 2019 04:36 am
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David A Cherry
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  it should've never been a casting in the first place, castings are very porous. 

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 Posted: Thu Nov 14th, 2019 05:10 am
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Steve Stephens
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David A Cherry wrote:   it should've never been a casting in the first place, castings are very porous. Metals, including castings, are not porous but castings can have what is called "porosity".   

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 Posted: Thu Nov 14th, 2019 03:13 pm
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Richard Daugird
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I have to agree with both Dave and Steve. My humble opinion is, a casting is not as strong as a part machined from a solid piece. Furthurmore, looking at the smooth surfaces of the originals, they were probably die cast, which would be difficult to do on a small scale to say the least, as opposed to sand casting, fairly easy to do in the home shop. This is as close as I have come to the process:

https://www.youtube.com/watch?v=alfyLvcQWdY
https://www.youtube.com/watch?v=eEAMjRJNpE4

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