Andrew Zonenberg

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Security and open source at the hardware/software interface. Embedded sec @ IOActive. Lead dev of ngscopeclient/libscopehal. GHz probe designer. Open source networking hardware. "So others may live"

Toots searchable on tootfinder.

ngscopeclienthttps://www.ngscopeclient.org/
Bloghttps://serd.es
LocationSeattle area
GitHubhttps://github.com/azonenberg
@lydialurch @alice my understanding is that in that time frame people who naturally had yellowed gray hair would try to hide the yellow and create a more neutral silver color by adding a slight blue tint, but would often go overboard by mistake and end up more blue than gray
@dlharmon @aholtzma oof. Can't wait for the bubble to pop and ram prices to return to some semblance of normalcy

@drahflow yeah but no way am i getting random plastic all over my nice Hakko tips.

I much prefer the hot air "torch" technique. If you use filler rod it's pretty similar to oxyacetylene brazing except the rod doesn't fully liquefy and there's no capillary action, it just sticks in place where you placed it

@robryk you can look at the recycling symbol. Polyethylene (HDPE and LDPE), PVC, and polypropylene, among many other common plastics, are.

Anything injection molded is made from a thermoplastic by necessity since the molding process requires heating and softening the raw material to squish it into the mold.

Epoxy resin, as used in fiberglass parts, is one of the few common plastics that is *not* a thermoplastic.

Or yes, gentle heating. If it softens it's a thermoplastic, if it shows no change in hardness until reaching the point of discoloring (beginning to char/decompose) it's a thermoset and can't be heat welded.

@petrillic I have a separate one for random repair jobs so the soldering one can stay on the bench, it's a pain to move it around because of how it's wired

Another day, another of the little one's things repaired with a hot air tool and a bit of poking.

So many people assume broken plastic is unrepairable garbage because it's hard to glue.

But if it's a thermoplastic, as almost all mass market plastic goods are, all you need to do is gently heat up the pieces until they soften and push them back together to form a solid weld. Filler rod can help in some cases but isn't always necessary or useful depending on the nature of the repair, for flat surfaces I've had decent results just using a screwdriver to lightly press the heat affected zones into each other until they merge.

ReworkCTF boards came in. I can't fully populate them because the Digikey order with the last couple of parts I need isn't coming until Monday but I should be able to populate the back side whenever.

I can also do one of the soldermask challenges, some of the back side inner layer rework, and the front side unpopulated BGA site rework if I want.

But first I have some logistics to sort out WRT streaming and which cameras go where etc to actually record the work. So I guess maybe that's going to be the afternoon project.

@AMS @NanoRaptor i rarely if ever use the default functions bound to f1...f10 so i just unbound them
Then I'll need to populate the rest of the board before I can work on the remaining challenges
ReworkCTF v0.2 boards show out for delivery. Probably gonna stuff the back side decoupling caps later today and maybe do the pre-BGA circuit edit as a test stream tonight or tomorrow depending on how busy I am.