First of all I live in Thailand where the source of wine making
equipment is strictly limited. To date I have been "crushing" grapes
by hand, stomping, and rubbing through a plastic basket (similar to a
milk crate) and to be frank it is a lot of work and I would like to
build a crusher, possibly a crusher/destemer.

Does anyone have plans, a photograph, or any other data about the
internal parts, or any other information, regarding crushers and how
they are function?

I presently envision two geared rollers with adjustable spacing but
what material for the rollers? Stainless? Black iron? Can they be
smooth or do they need serration? What about the destemer portion?

I have a background in engineering and metal fabrication so the actual
building will not be a problem, it is in the details where the devils
lurk.

I've also posted to the wine makers but thought (hoped) that someone
on this group might have built a crusher. After all, there is no
reason a machinist cannot drink wine.

Any assistance, no matter how rudimentary, will be very greatly
appreciated.

Bruce-in-Bangkok
(correct email address for reply)