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@mcdanlj@social.makerforums.info
2025-12-06 16:16:49

Over the past couple weeks, I've been designing a spool with some particular features in #FreeCAD, encompassing 6 parts to 3d-print. I've been manually re-orienting them when I print them.
Now that it's working, I realized that I could use the FreeCAD Assembly workbench to create a good packing of the parts in the right orientation for printing, saving anyone else who wants to prin…

FreeCAD screen shot showing the parts as they will be used. This is not an assembly; the parts are designed with parametric placement.

FreeCAD screen shot of top view of parts arranged to print, showing one fixed joint and five 0-valued distance joints between faces that should be coplanar for printing

FreeCAD screen shot showing edge view with printing surfaces aligned

Screen shot of sliced assembly, imported into the slicer and sliced without any further arrangement.

@UP8@mastodon.social
2025-11-07 02:35:08

🦠 Microbes may remove more than half of groundwater methane, curbing global emissions
https://phys.org/news/2025-10-microbes-groundwater-methane-curbing-global.html

Microbes may remove more than half of groundwater methane, curbing global emissions
Groundwater commonly contains methane, but the amount of this important greenhouse gas that can escape to surface waters or the atmosphere is highly uncertain. A team from the Max Planck Institute for Biogeochemistry and University of Jena has shown that microbes in groundwater significantly reduce methane emissions, as revealed in a study published in PNAS.

@mcdanlj@social.makerforums.info
2025-12-07 00:07:53

I packed for #POTA before heading out to do the weekly grocery shopping, even though it was only 40°F / 4.5°C with low clouds. I decided it was too cold to sit in the helinox chair without insulation, so I drove past US-3867 and went to US-2755 Umstead State Park instead, where I could sit at a picnic table. I took a floor mat out of my car to sit on. As it was, it was cold enough that I co…

Map covering most of the continental United States, showing 33 QSOs across 18 US states, ON Canada, and PR, all using only 5W on the 20m band.

Picnic table set up for POTA with KX3, PA2, my own single-paddle key, and a tablet on a stand with a keyboard.

Pictures of trees with almost invisible mast, RG316 coax, and 26AWG black wire that I know is there but can't see even though I know where to look. the mast is leaning against a branch instead of being guyed.

Linked dipole stowed for transport. Black wire is wrapped in a figure eight on each side, with bright yellow thin elastic cord at the end of each wire. A coil of RG316 coax is underneath it, and some of the elastic cord is wrapped around the coil and winder to stow.

@heiseonline@social.heise.de
2026-01-07 14:45:00

Fender: Bluetooth-Lautsprecher und Kopfhörer für Musiker
Fender hat tragbare Bluetooth-Lautsprecher mit XLR-Kombi-Eingang für Instrumente und Mikrofone sowie Funkkopfhörer mit austauschbaren Komponenten vorgestellt.

Fender: Bluetooth-Lautsprecher und Kopfhörer für Musiker
Fender hat tragbare Bluetooth-Lautsprecher mit XLR-Kombi-Eingang für Instrumente und Mikrofone sowie Funkkopfhörer mit austauschbaren Komponenten vorgestellt.