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In Reply to: RE: The Monster Amp posted by Sherwood Forest on October 13, 2014 at 16:49:32
Here's the hole, you can see how it works. The socket is recessed into a larger hole, which is stacked on top of smaller hole with a key.
Doesn't look like I can't upload a front panel express file here, so I'll link it to dropbox for you!
https://www.dropbox.com/s/5yjj0rtobq0h6zm/Amphenol_Octal_Screwless_4mm-plate.fpd?dl=0
Follow Ups:
Thanks very much for the FPE drawing. I assume that I can create a macro from the two cavity drawings (circle 32.5 mm and cutout EAO-Serie-61F.dxf), but I believe I need Cutout drawing EAO-Serie-61F.dxf to add the cavity with the tab.
Hi,
I am glad I put something up here that somebody found useful. Let me know if you need anything from me. That notched hole, the one you are missing, I can't remember if that came with the program or if I downloaded a supplemental pack. Either way, it was obtained from FPE. I took that one notched hole, scaled it, and then added the other hole on top. It might just be that you have an old version of the program?
To make the thing a macro, you just select all, then edit-> grouping, once it's grouped, you can save as a macro. Still haven't figured out how to just export macros.
Anyway, I'll play around tonight and see if I can get it exported. I also have a template now for the Electroswitch rotary knobs, I'll link that up later.
Cheers!
I think you must be correct that the EAO-Serie-61F.dxf file probably came from FPE. I will have to look for it if I decide to mount the tube sockets that way in the future. Right now I have made macros for 9 pin and 8 pin sockets that use a saddle to mount them that also include vent holes around the socket. It certainly makes it convenient to add a bunch of tube socket holes to a panel quickley and accurately. I can't find a way to export macros either.
Here's the hole template for the ETI MW22B-10 precision 10 turn wirewounds. This template also has a key hole on the top that's for Litton 10-turn dial counter knobs, but may work with others. At any rate, you can delete the top-side keyhole if you want, it's only for the dial counter.
This arrangement works well in 4mm plate. Like the octal socket hole, this is a multi-diameter hole with a key. The pot countersinks from the back, goes in far enough to get the key in the hole, but allows the strain of the nut to be placed on the shoulder of the brass shaft collar, rather than on the plastic, which might break it. All in all, this hole came out perfect and needs no revisions at all for 4mm plate.
https://www.dropbox.com/s/mpgiiafr2ab1rgh/2014-10-14%2000.54.00.jpg?dl=0
I should have also mentioned that while the hole is perfect, you must omit the lock washer due to the thickness of the 4mm plate if you wish to use this particular dial counter. Otherwise, it probably wouldn't be an issue, but in any case works just fine without the lock washer (use loctite).
Just got the stepped attenuators from Khozmo today. They seem fantastic. All three were custom made; a 50K ladder and two 1K series. The ladder is for the volume, the two 1Ks are for the adjustable feedback circuit.
I'm taking measurements now, they're a little odd, but I think they make sense. I'll report back when I better understand them so as not to go off half-cocked.
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