Re: [CAD_CAM_EDM_DRO] Re: Making bellows

I've seen some good ideas posted in answer to to my question.

So far what I've seen would lead me to choose a combination of two.

Turn a male pattern on the lathe....include provisions for end flanges to be
formed in place. Make a two piece mold from the pattern. Use the two piece
mold for rotational molding using RTV for the part. Experimenting to get
the right thickness and/or material shoould be pretty easy. Fortunately, I
already have plenty of Smooth On on hand for my mold projects for the Dream
Machine so I have a good starting point.

Smoke

>Paolo,
>
>Nice post!
>
>Your process uses a "female" mold.
>
>You can also do this with a male mold, by dipping in Whatever goop is
>appropriate. You will either need to use a material which will
>stretch far enough to be pulled free of the mold, or make the mold in
>parts, so it can be removed from the inside (like those used in metal
>spinning closed forms). Advantage is that the mold is eassily made on
>a lathe, and the bellows wall thickness is pretty controllable. Years
>back I did some of this kind of molding for model aircraft parts. I
>dipped, then placed the mold on a "rotisserie" so it would dry in an
>even coat/thickness.
>
>Hope this helps.
>
>Ballendo
>
>
>
>--- In CAD_CAM_EDM_DRO@y..., Paolo Velcich <pavel@k...> wrote:
>> I would suggest a simple method to make your own bellows:
>> Rotational moulding is the solution, it's cheap and quick.
>> And it produces professional results.
><snip>
>
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