[time-nuts] Form factor

[Robert Darlington]

I particularly like the Box Enclosures brand extruded aluminum boxes.  The
series 2 and series 3 enclosures take 100mm wide Eurocard boards perfectly.
They are very easy to machine if you want D holes for BNC connectors, etc.
They're also extremely high quality and cheap!   Newark sells them and I use
them all the time for projects.  I really can't say enough good things about
them.

http://www.boxenclosures.com/category/category_product.html?cats__id=1070

This link should bring up the listing of Series 2 and 3 (100.5mm wide slots
internal) at Newark Electronics:  *http://tinyurl.com/boxenclosures*

-Bob

On Mon, Jan 3, 2011 at 12:35 PM, Chris Albertson
<albertson.chris at gmail.com>wrote:

> Hammond also make aluminum boxes from extrusions.  These have parallel
> walls and there are slots for mounting PCBs.  I don't think we need to
> select a "standard" box.  only a "standard PCB siz.  If you pick 100mm
> x 160mm that is a standard eurocard size and there are many boxes that
> hold 100 x 160mm PCBs.   Making the cards a common size with standard
> mounting hole locations also allows you to stack them with spacers if
> you don't want to buy aluminum boxes.
>
> On Mon, Jan 3, 2011 at 7:16 AM, jimlux <jimlux at earthlink.net> wrote:
> > bownes wrote:
> >>
> >> I love those Hammond boxes until I have to pay the bill. The one for my
> >> n2pk VNA was about $28.
> >
> >
> > I find the non-parallel sides really inconvenient on the Hammond boxes.
> >  It means you can't mount the boards to the sides of the box, just to the
> > bottom or the top.
> >
> >  COMPAC (http://www.compac-rf.com/)  has enclosures that are a section
> of a
> > rectangular tube aluminum extrusion with lids.  I think you could
> improvise
> > pretty well with some other technique (i.e. buying some other kind of
> > extrusion and cutting it yourself.)  Yes, the screws to hold the lids on
> are
> > tiny and numerous, which is a pain. And I'd hate to have to do it by
> hand.
> >
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>
> --
> =====
> Chris Albertson
> Redondo Beach, California
>
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