Soliloqueen's k87(k67) and k47 capsules

[soliloqueen]

updated b-stock k87 count, updated normal count to follow. shipped almost everyone ran out of thermal paper so 3 people are unshipped. will ship monday. happy holidays.

edit:
now that we're doing the metal at my friend's shop and it's so much more expensive, a single sided k87 is less feasible. i'll have to come up with a simple secondary backplate that can still be skinned if i want to do a single sided version. or maybe i'll just make a k103. i'll still look into it tho

 

[Екатерина]

updated b-stock k87 count, updated normal count to follow. shipped almost everyone ran out of thermal paper so 3 people are unshipped. will ship monday. happy holidays.

edit:
now that we're doing the metal at my friend's shop and it's so much more expensive, a single sided k87 is less feasible. i'll have to come up with a simple secondary backplate that can still be skinned if i want to do a single sided version. or maybe i'll just make a k103. i'll still look into it tho

Hi, maybe photosensitive 3D printing is a good choice. It has enough precision for the structure, so only one layer of electrode plate is needed, which should reduce costs

 

[Rusan]

naval brass is alright. we ended up going with silicon brass 697 instead. the silicon brass was just easier to make into tiny screws. i know it's most likely that it's just copper patina, but some of these spots look too disconcertingly silvery for my taste.

In agreement with Disco Volante, IIRC from metallurgy class in welding school, red silicon brass is extremely resistant to dezincification and is even rated for potable water contact.

Just being curious out loud here: have you looked into using 360 brass? I've done every machining process imaginable on gobs and gobs of it, and there's literally nothing in existence that machines so easily, smoothly and precisely. It's simply a dream to work with, and highly resistant to corrosion and dezincification. I suspect you might've already checked into it, but the 3% lead content perhaps renders it non-compliant with RoHS in what would be considered an electronics application?

 

[soliloqueen]

In agreement with Disco Volante, IIRC from metallurgy class in welding school, red silicon brass is extremely resistant to dezincification and is even rated for potable water contact.

Just being curious out loud here: have you looked into using 360 brass? I've done every machining process imaginable on gobs and gobs of it, and there's literally nothing in existence that machines so easily, smoothly and precisely. It's simply a dream to work with, and highly resistant to corrosion and dezincification. I suspect you might've already checked into it, but the 3% lead content perhaps renders it non-compliant with RoHS in what would be considered an electronics application?

Leaded brass like this is what's traditionally used for backplates so of course we use it I just hadn't thought about using it for screws.

360 is so common and irreplaceable in electronics that the rohs actually has an explicit exemption for 360 brass. Look it up!