@mcdanlj@social.makerforums.info
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mcdanlj

@mcdanlj@social.makerforums.info

1st Fedora Project Lead. Co-author Linux Application Development. Sr. Director Engineering Pendo. Ex-{Linux Journal, Red Hat, rPath, SAS}. Christian. Father. Maker (including machining, 3D printing, and electronics). Books. Classical music. Aviation (inactive PP-Inst-SEL). https://musings.danlj.org/

#searchable searchable (please index my posts for search purposes)

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MLE_online, to random
@MLE_online@social.afront.org avatar

My local bike shop guy heard about my quixotic quest to adapt a 40 spoke Sturmey Archer hub to a 36 spoke rim with machined adapter plates, and give me another hub to play with.

It looked nice on the outside, but it did not make the expected ratcheting sound that a freewheeling hub should make when spun. It also did not work correctly.

I thought maybe it would just be full of gummed up grease inside so I poured a bunch of paint thinner in there and let it sit, but that did not fix it, so I disassembled it and found it to be extremely crusty, rusty, and gunky inside.

I'm going to try to make it work again, even though this hub still won't work on my bike because it's drilled for 28 spokes lol. It just seems fun to see if I can clean it up and fix it.

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mcdanlj,
@mcdanlj@social.makerforums.info avatar

@zackstern @MLE_online Do be aware what metal you use it on, though. Joe Pie recently did a video showing what evapo-rust can do to high-carbon steel, and the stains on my cast iron mill table from a few inadvertent drops long ago are persistent.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@zackstern @MLE_online The problem is called carbon migration or carbon surfacing. Here's the video:

https://youtu.be/Jd2ctXoUZOA

The evapo-rust FAQ describes this:

https://www.evapo-rust.com/rust-remover-crc/

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@zackstern @MLE_online Fully submerge it, and pull it out to check every half hour to an hour. If you see a dark film, wipe it off while it is still wet.

If you partially submerge a part, it will remove oxide to bare metal at the air interface, where it will the readily oxidize again, and then the chelating agent will again strip the rust, and so on; it is a form of electrochemical etching I guess...

mcdanlj, to random
@mcdanlj@social.makerforums.info avatar

Nice roundup of some of the recent weirdness in google search powered/poisoned by AI:

https://www.howtogeek.com/google-search-ai-overview-responses/

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@stu https://social.makerforums.info/@mcdanlj/112493206991651582

trevorflowers, to random
@trevorflowers@machines.social avatar

As I caught myself considering whether to manufacture 1:3 scale tubular cam locks for smol computer panels I decided that my 12yo self would be confused but happy about how this phase of my life unfolded.

I told my friend the other day that I feel a bit post-singularity in the sense that ~three years ago I left a straight-forward career and at the same time the world went sideways so I have ~no ability to predict what will happen even next year.

Surprisingly, I'm mostly OK with it. 🤷

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@trevorflowers That's an interesting engineering challenge... Instead of trying to scale everything equally, you could do 1-3 pins that are larger than ⅓ size. I'd think that trying to make springs for roughly 1mm wide pins could be one of the real challenges of a 1:3 scale tubular lock...

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@trevorflowers Yeah, my ramblings were just ramblings, not serious suggestions. I was just enjoying chewing over the idea. 🙂

mcdanlj, to random
@mcdanlj@social.makerforums.info avatar

Sometimes, Big Kids need toys too.

https://forum.makerforums.info/t/balanced-boffers/89965?u=mcdanlj

kwf, to random
@kwf@social.afront.org avatar

My partner has put over 800 miles on her new plug in hybrid, and she still has over half of the original tank of gas from the dealership.

PHEVs are seriously the best of both worlds if you're not ready to take the leap to a fully electric vehicle.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@kwf @phpete Also, modern gas is much more stable than gas from 50 years ago, I've read.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@kwf Other that the clogged EGR valve/cooler combo endemic to the series, our Gen2 Chevy Volt has been wonderful. I think we're closing in on 170K miles, and much of our driving is electric. It's not as efficient as it once was, so as it ages, the percentage of gas miles has gone up over electric miles. We used to get about 50 electric miles before switching to gas; now it's more like 35.

Sadly, nothing shipping today has the electric range that the Volt had when we bought it. ☹

trevorflowers, to kicad
@trevorflowers@machines.social avatar

Just one of these schematics is correct. Can you see why?

A screenshot of a circuit schematic with all labels correctly in place.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@trevorflowers Oh no. Do you have another board order to place? 😭

(I'll never forget the time I forgot to reflow my ground plane after Just One More Tweak, didn't re-run ERC, and ended up with VCC wired straight to GND on the boards I had made...)

danielnazer, to random
@danielnazer@mastodon.social avatar

Google search over the years:

1998-2016: Decent quality web search.

2016-2024: Mediocre web search dominated by SEO garbage and sponsored links.

2024-___: Whatever this is.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@danielnazer Someone needs to tell Gemini to take The Onion with a grain of rock salt...

https://www.theonion.com/geologists-recommend-eating-at-least-one-small-rock-per-1846655112

mattdm, to random
@mattdm@hachyderm.io avatar

I don't quite understand how knighthood works in the UK, but... somehow Alex Horne isn't one yet?

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@mattdm Sir Little Alex Horne?
The Sir Horne Section?

🤔

mcdanlj, to random
@mcdanlj@social.makerforums.info avatar

An exciting milestone for upstream integration of the TNP mitigations designed by Realthunder and debuted in his LinkStage3 fork: New bug reports against upstream reproduce current LinkStage3 topological naming behavior.

https://github.com/FreeCAD/FreeCAD/issues/14129

mcdanlj, to random
@mcdanlj@social.makerforums.info avatar

Had my first commit to FreeCAD merged today. Removing one stray character in a tooltip. 😀 About as trivial as possible...

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@Flux Most of what I've done lately has been trying to make useful bug reports. Though I did end up contributing to the Lattice2 workbench recently, which was kind of ironic because I've used it exactly once and so really don't know how to exercise it. I'm still at the "carefully following a tutorial" stage; I haven't graduated to "understand it well enough to use it fluently" at this point.

But the FreeCAD contribution process was easy enough. I put up a PR with the typo fix, and a few days later it was merged, after tests passed. Also, in before the 1.0 string freeze for translation... Well, string slush? 😀 Anyway, can't really think of anything that would have made the process any easier.

mcdanlj, to javascript
@mcdanlj@social.makerforums.info avatar

In the Kiri:Moto discord, @stewart wrote:

I'm at a crossroads with 4.0 and future development. For a long while, I've been considering a complete re-write. The only way I think I would consider that is if other devs signed on. Otherwise, there are various paths forward with refactoring. And/or splitting out CAM from the rest of the package to provide more freedom of UI expression.
...
there are so many things I would do differently looking back. JS has evolved, browsers have evolved, tool chains have evolved. I would like the final product to be able to be served statically without a server and retaining the options for cloud connected features (as long as they're not necessary for normal functions). I would focus on making a CLI / library for everything first instead of building the UI in lock step. nodejs was not a thing when this project started. I'd like to offload more code into WASM from the start, etc.

What's the intersection of the #javascript #cad and #maker communities here? Anyone interested in both high-performance JavaScript and CAD/CAM want to join in?

https://forum.grid.space/t/4-0-development-has-started/1279

The goal is to make it more approachable for developers … and tidy things up a bit.

stewart, to random
@stewart@social.makerforums.info avatar

Kiri:Moto 4.x Development has begin. Announcement here: https://forum.grid.space/t/4-0-development-has-started/1279

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@stewart This is exciting to see! I hope the "more approachable for developers" part encourages more folks to participate. ❤️

mcdanlj, to random
@mcdanlj@social.makerforums.info avatar

How are there only 639 likes on this Numberphile interview with Donald Knuth from January with almost 21K views?

https://www.youtube.com/watch?v=2GbtLpYvzFQ

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@pro But Knuth isn't Wirth.

smellsofbikes, to random
@smellsofbikes@mastodon.social avatar

A dubious idea I have about cutting curved dovetails so a box would look like an impossible dovetail box, but would in fact have the top open on an arc rather than a diagonal slide like most impossible dovetails.
The axis of rotation is the left corner, where there's a green line.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@ryancoordinator @chrishuck @smellsofbikes Love to hear how it goes!

I suggest setting height and width parameters for a fairly small box while testing dovetailClearance values. I chose 3mm for the pin diameter because I have 3mm stainless rod handy; choose something you have easily available.

I am still playing around with design, so haven't started printing. I'm planning to slow my printer down substantially because some of these sharp corners might have the tendency to ring a little, even with resonance compensation.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@chrishuck @kbob @smellsofbikes Yup, that was the realization I had.

I've realized that even the curved surfaces could be cut with CNC and a steeper dovetail cutter. For an apparent 30° angle (what I've modeled) you could use a 45° dovetail cutter and do fine passes at Z intervals of something like half the tip radius of the cutter. The machine won't get bored... ☺

Doesn't really require CNC. Could even do lots of stations manually on a rotary table if you don't mind being bored out of your skull for a few hours and aren't afraid of misreading one number once and scrapping the part! 😅

All this makes me think that I want to model each piece twice, one with the theoretically exact curve, and one that is a model of using a conical cutter of a nearby angle (by some measure of "nearby" that might include "make a customer cutter" or could be manually selected for "cutters you can buy cheaply"). 🤔

This means I should take all the expressions out of my constraints and put them in the spreadsheet, and alias them well because I'll be using them more.

mcdanlj, to random
@mcdanlj@social.makerforums.info avatar

In order to help someone build an "open source" project that was built with windows-only proprietary tools, I need to install Windows on a computer at least for a while. I think I spent at least an hour trying to create bootable media on someone else's windows computer before finding a comment buried somewhere that the windows media tool just silently fails to work with sandisk thumbdrives, with no information shown.

Compare that to Linux iso images that can just be written to a USB drive and still work (thanks to H. Peter Anvin's work many years ago) and work just fine on those same sandisk drives.

mcdanlj,
@mcdanlj@social.makerforums.info avatar

Well, "windows-only" wasn't true, I guess there is a mac version too. This was f360 for a custom keyboard build published only as f3z files. F360 kept failing its license check as I tried all sorts of things.

Turns out that the windows install didn't respect DHCP and Windows time was way off. Once I fixed the clock, I was able to start f360 and get the STEP, sch, ipc, gerbers, and drill files created. Progress unlocked. Not without f360 complaining about me having intel graphics, though. I couldn't find a way to export a PDF of a schematic, either. I'm sure it's buried somewhere, but the alternative was to just capture a screenshot...

kwf, to random
@kwf@social.afront.org avatar

So I've got this empty concrete pad on the side of my house.

It used to have a rotted out 12x24' shed on it, but I demolished that last fall and figured I could do something better... 🧵

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@kwf I bought a Bosch 8 amp proper SDS+ hammer drill and it made a world of difference. It cost the same as two days of renting it...

mcdanlj,
@mcdanlj@social.makerforums.info avatar

@kwf Here's another unexpected benefit: I needed to drive nails overhead, up into old, dried treated lumber. I couldn't manage to do it swinging a hammer. I put an impact socket into the Bosch, put it over the nail heads in hammer-but-don't-twist mode, and drove those nails in about 2 seconds flat.

I don't use it much, but when I need it, it sure comes in clutch.

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