Subject: bellhousing casting plug
From: Rotary Engine
Date: 3/10/2008, 2:35 PM
To: AAA Put this in the To box


> > Paul,
> > > > Finally getting over this flu. What a nasty bug. The outside > plug for
> > the bellhousing just came out of the machine
> > > > Inner core going in now. Picture attached of outer plug. Just > > needs a
> > little sanding and polish.
> > > > Larry
> > > > Thanks Larry. Looking good.
> > -- > > Paul Lamar ...No rotor no motor.
> > Larry, what's the mat'l your using there? Is that REN board?
> > Jarrett  [Look's REALLY good!]
> > Jarrett,
> Not really sure what the plastic is... but it was free, so the > price was
> right. It is not delrin, but feels more like abs or polypropylene > blend.Anyway it's weird stuff with green speckles in it. Seems > very tough, so it
> should hold up to the casting process well.
> Larry

Possibly recycled UHMW? It can come in a dark muddy or yellow color..

So is that the full pattern? Is the interior pocketed out and used as
the mating pattern for the part? [Instead of two patterns?]

Jarrett

Jarrett,
The material was still a mystery... so we did the specific gravity test. It
floats in water, so is most likely recycled UHMW. Unusual color for this,
but almost no other plastic has this density.
Larry

Where the H@LL did you find a chunk THAT big? For free no less..
Crazy... I pay many dollars per sqr foot of 1" stuff..

Jarrett

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