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@UP8@mastodon.social
2025-12-29 19:30:15

🌠 Meteorite crater hosts methane-making microbes—a clue to life on Mars?
#meteor

@mcdanlj@social.makerforums.info
2025-12-28 02:53:51

For my linked dipole, I came up with using high-shrink (I use 4:1) marine (lined with heat-activated glue) heat shrink tubing and dacron line for making neat links that wind nicely and avoid putting stress on the wire.
Today I realized that I could use the same technique to put loops at the ends of my end-fed antenna and …

A piece of doubled dacron line partially inside a heat shrink tube
A piece of wire next to the tails of the doubled dacron line, ready to be inserted into the heat shrink
Heat shrink slid down over wire and almost to the ends of the doubled line
Shrunk tubing after heat applied, holding wire and loop together
@frankel@mastodon.top
2025-12-30 09:00:09

4 mois de #Python de manière intensive: mon retour sur le langage
mcorbin.fr/posts/2025-12-26-py

@primonatura@mstdn.social
2025-12-27 13:00:56

"Washing machine filter captures microfibers as small as 20 micrometers in size"
#Plastic #Plastics

@tinoeberl@mastodon.online
2026-01-26 12:13:02

🍮 Wissen zum Nachtisch: 🍨
Was genau zählt eigentlich als #Mikroplastik?
Die Europäische Union, das Umweltprogramm der Vereinten Nationen und #Umweltschützer verwenden überraschend unterschiedliche Definitionen. Wer wissen will, wie Mikroplastik definiert wird und woraus …

@mcdanlj@social.makerforums.info
2025-12-27 18:31:03

The case for my 28g QRP dual-ported (9:1 and 49:1) unun cracked from tightening one of the terminal screws too tight, and from having printed the box with too few perimeters, so it wasn't really strong enough. I had designed it so that the coax was integrated into the case, so I had to cut the case apart to remove the still-functional electrical components for re-use.
At least this gave me a chance to confirm that I hadn't blown up the ferrite from overheating it!

Damaged case with one side cracked off and pieces cut out for destructive disassembly to save the electrical parts for a new case.
Electrical components removed from broken box: a tapped autotransformer with three ring terminals at the connections, and a blue high-voltage capacitor. Two of the three ring terminals have brass M3x8 screws currently installed. 1/10" RG316 is visible at the bottom.
@tinoeberl@mastodon.online
2025-11-29 08:09:02

Gebrauchsgegenstände aus #Plastik in der #Küche können #Mikroplastik ins Essen abgeben.
Diese Partikel sind ein

@tinoeberl@mastodon.online
2025-12-26 12:31:01

🍮 Wissen zum Nachtisch: 🍨
Was genau zählt eigentlich als #Mikroplastik?
Die Europäische Union, das Umweltprogramm der Vereinten Nationen und #Umweltschützer verwenden überraschend unterschiedliche Definitionen. Wer wissen will, wie Mikroplastik definiert wird und woraus …

@mcdanlj@social.makerforums.info
2025-11-29 13:47:30

In #FreeCAD, what can I do from the UI and from Python macros to cause all the topological naming links to be recreated in the current shape?
I have a Part Design Body that for which I can mark it to recalculate and then recalculate and it's fine, but if I modify a driving parameter trivially, including by an inconsequential .001mm, suddenly it tells me that I have an invalid edge …

@tinoeberl@mastodon.online
2025-11-26 12:13:02

🍮 Wissen zum Nachtisch: 🍨
Was genau zählt eigentlich als #Mikroplastik?
Die Europäische Union, das Umweltprogramm der Vereinten Nationen und #Umweltschützer verwenden überraschend unterschiedliche Definitionen. Wer wissen will, wie Mikroplastik definiert wird und woraus …