I think Wayne’s short 2D fasteners are kind of special. Being just long enough for the joint, they allow an adjustment that I’ve used so many times constructing the K transceivers, etc. to fit the panels and boards just so. Also light weight.
Chuck KE9UW Urbana, IL Sent from my iPhone, cjack > On Mar 16, 2018, at 10:54 PM, Wes Stewart <[email protected]> wrote: > > Don, > > I've used angle stock on more primitive projects but if you look at the > picture(s) you can see that the flat plates are joined with 3/8" square > aluminum bar stock. I used T6 material for its clean drilling and threading > properties. The flat plates are all 6061-T6 material as well. Everything > was laid out on a granite surface plate with the work held vertically and > layout lines scribed with a vernier height gauge. The holes were matched > drilled in the plates and bar stock. The bar stock was threaded (8-32) and > the plates drilled for screw clearance . But because of the precise layout > the parts were still interchangeable. > > Everything was power sanded, dipped in a caustic batch to slightly etch the > surface, water rinsed, dipped in an acid bath to remove the smut, rinsed > again and then given a conversion treatment (Alodine). All of the lettering > was engraved and filled with India ink and a drafting pen. All of this was > SOP on the specialized test equipment we built at Hughes back in the day. > > The only pieces in these two amplifiers that I didn't fab myself were the two > clamps for the cold ends of the plate lines on the 8877 amp. I did do all of > the silver plating as well. > > Wes > > >> On 3/16/2018 3:37 PM, Don Wilhelm wrote: >> Wes, >> >> If you are referring to the aluminum angle stock, I used that back in 1960 >> when constructing a amplifier. I did not think I "invented" it, and at that >> time I did not have a drill press, just a hand drill and a tap, so the holes >> were not precisely spaced. It worked well, and complied with the TVI problem >> of that time (put everything in a shielded box). >> >> 73, >> Don W3FPR >> >>> On 3/16/2018 4:28 PM, Wes Stewart wrote: >>> Johnny come lately: I invented them in nineteen seventy something. And >>> mine really are 3D :-) >>> >>> http://sadxa.org/n7ws/K7CVT_Amp_Input_Compartment.jpg >>> >>> Overall views here: http://sadxa.org/n7ws.html >>> >>> Wes N7WS ex K7CVT >>> >>> >>>> On 3/16/2018 12:36 PM, Wayne Burdick wrote: >>>> But they *do* allow you to join two enclosure planes while also supporting >>>> a PCB or other hardware. That was the intent of the design. (I invented >>>> these in 1998 :) >>>> >>>> Wayne >>>> N6KR >>>> >>>> >>>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[email protected] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [email protected] >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
