XaiJu
Not An Engineer
Not An Engineer

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State of the Workshop - April 2024

New toys and next steps.

Comments

Ditto on printers just doing their damn job. The X1 has been a breath of fresh air.

NotAnEngineer

Lamp Idea : Make it with a pin point spot on it and hang it above your work bench and use it to comically point at tools, make harsh shadows or hold a microphone. Not at all practical but you could do it for the LOL's. I have an X1 Carbon and I purchased it because I like making things. I don't enjoy dialing in tools and playing with them more than normal. I.e. happy to tram in and dial table saw etc., but having to constantly tinker with a low quality 3D printer to just get a usable part is not my idea of fun. Congratulations on the success of your channel. I really like your content and humor in them. Sending the drive parts to Brandon for the box of shame was funny as F$#K and was totally worth what ever you spent on the shipping.

Michael Burke

Even with that fancy CNC still coming back to the manual ways 😉 Seriously, congrats on all the successes and upgrades. That new mic sounds pretty great!

Brandon Sander

No worries about the deleted comment. You captured its essence well-enough in your response. I won't cancel my donations, yet 😅 As @Jonathan L mentioned, the VOCs are present, regardless of filament. The ABS smell is simply reminding you it's there! However, ABS (& ASA) do release styrene, which is a bit more concrete on the cancer risks, vs some of the other filaments. My wife has banned all my printers to a tiny closet that has a small window in it. I was able to install a bathroom exhaust fan to the window to make the whole closet negative pressure so nothing escapes into our living areas. I don't know if that's a feasible option for you, but I thought I'd throw it out there. I now use that little room for anything that should be ventilated (mostly epoxy). Re Premiere Pro: Looks like you're out of my league on that one. Good luck!

Alan Reiner

Ought to have ducting/filtration for all prints, not just ABS. Nano- and micro-particulate are generated by all plastics when brought hot enough to melt. The exact quantities at each point of the temperature-shear graph are a matter of statistical probability - as are all things heat-related (see Maxwell's Demon for more info).

Jonathan L

@Alan Reiner, sorry mate, my big fat thumb slipped and deleted your comment :/ doesn't look like there's a way to restore it. Re abs: definitely keen to give it a go, was just a bit put off by the smell. Printer is sitting in the office at the moment, will make up a duct to pipe the exhaust outside. You're right about the Nvme drives; I got a couple around the straight edges video, game changer. The last video made me finally check out proxies, but even with them the timeline was grinding to a halt. 24 cores have put that to bed now though! And render times are vastly improved.

NotAnEngineer

PLA is definitely the stiffest, but the creep and heat tolerance are embarrassing. And I'd definitely be worried about that given where you live. Nylon is much better for heat tolerance, but creeps a lot under constant loads, and can be a pain to print. Since you have an enclosure, make ABS and ABS-CF your primary day-to-day filaments. 98C heat tolerance, very low creep, excellent bridging, not difficult to print with an enclosure, and can be printed fast (which is relevant if you get a bigger nozzle). I have a 5kg spool of ABS as my default, next to a 3.5kg spool of ABS-CF for when I need stiffer parts. Also if it matters, you can use acetone smoothing on ABS parts. The other great filament I like to use is PETG-CF. Especially if what I'm doing is super sensitive to warping and dimensional accuracy (ABS tends to shrink about 0.5% after printing). The only reason I don't make PETG(-CF) my default is that it gets stringy, doesn't bridge well, and I can't seem to print it fast without occasional jams.

Alan Reiner

Also +1 to your channel recommendations; Stefan is doing the lords work in the 3d printing space 🙏

NotAnEngineer

Good info here, I was aware of some of this - was quite shocked that pla+ can be one of the strongest filaments depending on your needs. What interests me is the lower creep, and higher thermal tolerance of nylon and other cf filaments. Plus from what I've seen the prints look awesome 😁 I'm also really liking the standard petg (have only ever printed with pla+ in the past) but Bambu only sent a single spool in red (not my favourite colour for prototypes), and pretty much every other filament they sent is CF. I did get some straight PC and Abs that I'll have to try at some point. I'm waiting for a .6 and a .8mm nozzle to try the CF filaments out; don't wanna risk it on a .4mm.

NotAnEngineer

Regarding CF filament: temper your expectations. AFAIK, there are not any continuous fiber filaments. Even Markforged printers use a separate spool from the plastic for the carbon fiber - they lay down the CF in a separate action from the plastic extrusion. All of the CF filaments that you will find, including those from Bambu Lab, use finely chopped fibers. So, in addition to them being extremely abrasive, they physical properties of the prints are unlike Markforged CF prints and other continuous CF composites. The fibers are mostly aligned from the factory due to the extrusion process. They are further aligned during printing. This results in high stiffness in the axis of the extrudate. But all of the other strength properties of continuous CF are missing. In fact, there is usually a REDUCTION in strength compared to "unfilled" plastic. Check out work by Stefan at CNC Kitchen and Igor at My Tech Fun for more information, including raw data!

Jonathan L

The silliness ain't going anywhere, don't you worry about that

NotAnEngineer

New camera is sweet. Microphone too. There’s something raw and desirable about the way you’ve done it so far… just keep being you with the new equipment. That’s why we’re here, it’s why we subscribed, and that’s what we want to see! Also, I am one opinion of 150k opinions… sooooo

Steven Bierlink


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