>> > 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,
You don't necessarily need a top and bottom( inner and outer) pattern.
Although I can't remember which way Larry is going with this particularset-up. A singular pattern is all that is needed - from that you can produce
your earth or sand cast, which is in two pieces (inner and outer).
George (down under)

Your right George, there was some discussion the last time
Larry machined the dual patterns that this might be
doable w/ a single pattern which had the inside and outside
profiles in one pc. It looks like this might be what Larry was
doing w/ this new pattern.

Jarrett

The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2007 All world wide rights reserved.