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From: Okkim Atnarivik on 27 May 2010 04:13
Jitt <tser827(a)yahoo.com> wrote:
: 1/2 inch aluminum angle?

Thanks for the suggestion. Do you know of a variety which would have
a series of pre-drilled tapped holes? The end holes holding the top
and bottom plates would be problematic, too...

Regards,
Mikko
From: Jitt on 27 May 2010 11:41
In article <htl9jv$ihv$1(a)epityr.hut.fi>,
Okkim.Atnarivik(a)twentyfour.fi.invalid says...
> Jitt <tser827(a)yahoo.com> wrote:
> : 1/2 inch aluminum angle?
>
> Thanks for the suggestion. Do you know of a variety which would have
> a series of pre-drilled tapped holes? The end holes holding the top
> and bottom plates would be problematic, too...
>
> Regards,
> Mikko
>
Sheet metal screws? There doesn't have to be a fastener
_at_ the corner.

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From: whit3rd on 27 May 2010 13:50
On May 26, 6:40 am, Okkim Atnarivik
<Okkim.Atnari...(a)twentfour.fi.invalid> wrote:

>   I have a habit of making electrical enclosures using 5mm x 5mm
> rectangular posts...

>   It just is a pain to ask the technicians to make a new set of
> posts whenever I'm building a new enclosure. Now it occurs to
> me that such a simple thing - a rectangular metal  bar with tapped
> holes at regular intervals, in alternating 90deg angles - surely
> are available as prefabricated items.

Bigger systems (like rack-mounts) use punched steel channels
and one just snaps captive nuts into any punch-hole that needs
a connection. Smaller systems use aluminum angle, also
punched with any convenient perforation pattern, and press-in
threaded inserts (PEM nuts is one example). The smallest
systems are with plastic snap fittings.

Threading a solid chunk of metal only makes sense if you are
asking your technicians to make 'em in one-offs. There's too
many steps for it to be economical (as you have noticed).
Hand punches and threaded inserts are probably a good
choice for you. You might also consider slotted posts
and holding a PC board to them with tie-wraps.
From: Okkim Atnarivik on 27 May 2010 16:03
langwadt(a)fonz.dk <langwadt(a)fonz.dk> wrote:
: something like these gets close: http://www.techno-isel.com/lmc/H860/HTML/H860P127_1.html

A very good lead, thanks Lasse. They even have a web store. The
profiles are anodized, so it would be tough to make the enclosure
rf tight - still pretty close to what I'd need.

Regards,
Mikko


From: Okkim Atnarivik on 27 May 2010 16:08
whit3rd <whit3rd(a)gmail.com> wrote:
: a connection. Smaller systems use aluminum angle, also
: punched with any convenient perforation pattern, and press-in
: threaded inserts (PEM nuts is one example). The smallest
: systems are with plastic snap fittings.

Thanks, this sounds useful. Do you have an idea about a retailer?
I've been scanning through Farnell, Mouser and other cataloques but
such stuff did not catch my eye.

Regards,
Mikko
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