Notices by Koz Ross (koz@chaos.social)

For my first #CNCMachining job, I decided to be on-brand. This was made using the SVG tracing functionality in UGS (so, not even proper CAM), and I ended up doing an inside-line, followed by an on-line, pass.

I plan to cut it down a bit on the edges, then display it somewhere. That way, I can see where I came from as I learn more.

@jamie - you wanted cool thing, you get (kinda) cool thing.

I _definitely_ need to figure out how to prevent that 'tearing', both on my jigsaw and on my CNC. I suspect this is operator error, but I don't know what I should be doing differently in both cases.

@dalias Explains why I didn't recognize it. Definitely a very powerful hotend choice.

Love the design, and would build one myself if I didn't already have three printers mid-build, at various stages of completion. Looking forward to the ones everyone else will build though!

@dalias What's the hotend on your toolhead?

@dalias I guess you just stick one of the standard Keenovo heaters on the bottom of that? Is the bed mains-powered?

Also, I had no idea you ran a 3D-printed related Patreon. I am now sponsoring you, because this is really cool stuff you're doing.

@dalias Is the bed specially-made, or did you upcycle one from an existing delta?

@dalias That's a really good size. Glad we're getting a DIY design in it.

You said the files are published - where can I find them?

@dalias Wow, that's _very_ overbuilt. At least it means you have all the headroom in the world.

What's the print volume like?

@dalias Cool-looking design! What's the toolhead setup like? I can see a CPAP hose, but the rest is hard to make out.

Also, what electronics (specifically control board) are you using?

Days since I discovered a bug: 0. This time, for reasons totally unknown to me, Patreon videos no longer have audio in Firefox.

Why? Who knows!

To add insult to injury, I can't even `yt-dlp` it, even _with_ cookie passing, because I hit a 403.

Why? Who knows!

Can shit for _once_ just work for me? Whatever deity I've offended, surely at this point I've suffered enough.

Qidi 'engineering' strikes again: https://www.reddit.com/r/3Dprinting/comments/1jnuju1/rqiditech3d_permanently_banned_me_for_warning/

tl;dr - a Qidi Plus4's SSR (which we have been warning about since day freaking 1) finally blew and caught fire, with serious consequences.

I've said it before and I'll say it again: do not buy Qidi printers, don't suggest others buy Qidi printers. This isn't just sloppy engineering, this is outright dangerous.

#3DPrinting #FDM

@3dprinting

@dalias @3dprinting I have access to butt connectors. How would one abuse ferrules for this purpose?

I suspect I'm just bad at crimping honestly, lol.

On the advice of @mia , and with the experience of @amd , I have decided to finally get Catboat-1 running again by rebuilding its toolhead. I'm going with the Xol, using the Tap carriage and the MeowXol faceplate. Now I have to order some parts (in transit now), but I can print the shell at least!

Overall, _super_ impressed with the design of these parts, especially their supports.

#3DPrinting #FDM @3dprinting

@mia @amd @3dprinting "But Koz, weren't you just saying how much you love the DB?"

Yes, I was, and I still think that the DB is a good toolhead. However, for a Trident, it's definitely far from optimal, especially given how I chose to wire it. The Xol is better suited for this use case, and it also gives me an excuse to improve a bunch of other things on Catboat-1 that aren't great at the moment.

@3dprinting Notably, I have finally relented on the use of a toolhead PCB. The reason? I finally found one that I don't think is terrible: https://wiki.fysetc.com/H36_Combo/

Why is this one good enough to convince me?

1. Its MCU is rated for 125C, instead of the 85 or so of most of its competitors. As someone who's had a toolhead PCB fry due to inadequate temp management, this is a non-negotiable thing for me.
2. It has a ridiculous amount of IO. There's _four_ fans on it!

(cont)

@3dprinting

3. I don't have to use CAN if I don't want to. The H36 allows you to run a USB line for data, and two power lines (live and ground), while also having an X30 connector (which is motion rated and thus doesn't have issues that USB alone would). You can still use CAN if you want, but I figured taking one more layer out of the system can only be a good thing.
4. The board is _extremely_ well-documented, down to an _interactive_ BOM on their Github.

(cont)

@3dprinting Now, to be fair, this board does have one very notable downside: it uses JST PH connectors _everywhere_. Those things are a real pain to work with, as crimping them is fiddly and annoying. However, this might just be when I learn to solder: you can buy precrimped PHs for not too much money (or re-use some you already have lying around), and then solder join your wires.

It is my experience in general that someone who is critically and incurably wrong about _one_ thing is often critically and incurably wrong about _all_ things.

Recent experiences have done nothing to dispel this.

@dalias I have no objection to sandboxing of this kind by default - it is a sensible default and should stay that way. However, there is _no way whatsoever_ I can see to allow this to work. I've tried blanket-enabling _every_ filesystem permission in Flatseal, and even adding /var/lib _manually_, and _still_ it fails.

@dalias Oh, for extra joy - a globally-installed OpenSCAD won't work either, even with aforementioned nuclear permit-all Flatseal settings.

Great, now I have to figure out how I'm going to do this simple-seeming task in _Blender_, because apparently competence, FreeCAD and Flatpak live in different realities.