this post was submitted on 24 Dec 2023
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138
pretty basic but I made myself a less mess espresso basket prep ring thing. (lemmy.dbzer0.com)
submitted 6 months ago* (last edited 6 months ago) by naevaTheRat@lemmy.dbzer0.com to c/3dprinting@lemmy.world
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It'a detained by magnets so it doesn't get in the basket and interfere with spreading out the grounds. Needs a clean up with a lick of sandpaper, pretty stupid but these things cost like 50 bucks /shrug

EDIT: appreciate all the concern for my health, it touches dry coffee grounds. I agree that if it got wet there'd be health problems but unless it gets real humid there's just no opportunity for decay. As for random leaching same diff, without heat and wet it's not really a concern.

That said I probably will seal an improved design, this is just a test piece.

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[–] Gutless2615@ttrpg.network 20 points 6 months ago (2 children)

Microplastic speed run

[–] pigup@lemmy.world 4 points 6 months ago

He could just run a flame on it to melt whispy plastic strands down

[–] dangblingus@lemmy.dbzer0.com 12 points 6 months ago (1 children)

3D printed parts are NOT food safe.

[–] chunkystyles@sopuli.xyz 2 points 6 months ago

In general, yes. But the contact here is minimal. I wouldn't be worried.

[–] yokonzo@lemmy.world 8 points 6 months ago (2 children)

So usually id agree that 3d prints shouldn't be used for food, but this is a coffee hopper, they're made from plastic already and I guarantee you the ones we used at Starbucks didn't get that clean either, it's fine, just sand it and get rid of those hairs

[–] naevaTheRat@lemmy.dbzer0.com 6 points 6 months ago

Yeah you need moisture for decay. Tiny fines might eventually go rancid in tiny pores and taste or smell a little bad but idk. She'll be right.

Like it's not like I clean the burrs that grind the beans much so if rotting was a problem I'd be dead already.

[–] Grass@sh.itjust.works 1 points 6 months ago

I use some supposedly food grade filament with a stainless nozzle and dedicated extruder, and after initial finishing they get a dip in food grade epoxy. I only made star wars and penis shaped cookie cutters though.

[–] anguo@lemmy.ca 7 points 6 months ago (1 children)

I've been meaning to make one that molds to my grinder to prevent grinds flying all over the counter.

Just FYI, you can find metal dosing rings with magnets for as low as $3 on AliExpress. I'm sure yours fits better though!

[–] naevaTheRat@lemmy.dbzer0.com 1 points 6 months ago

Huh, didn't consider aliexpress. I have an old lever machine with a non standard basket size (49 mm or something) so idk if they exist for it. I can see one with a brief search, but it protrudes down into the basket to locate itself which is a bit inelegant.

[–] tcrpz@programming.dev 4 points 6 months ago (1 children)

You can find dosing funnels for ~$12 on Amazon. Still overpriced but eclipsed by the investment you made in the espresso machine.

[–] naevaTheRat@lemmy.dbzer0.com 2 points 6 months ago

I have a non standard old timey portafilter.

Pet peeve, a coffee machine isn't an investment. Not in the literal sense and the creepy corporatisation of language is weird. It's just an expensive toy that makes me like life a little more :) I actually got an old europiccola because no electronics (bimetal strip and heating coil aside) means I can keep this thing working indefinitely.

[–] Anticorp@lemmy.ml 4 points 6 months ago

Super cool! Great job. You can eliminate that seam by changing the position to random in Cura.

[–] GreatBlueHeron@lemmy.ca 4 points 6 months ago* (last edited 6 months ago) (2 children)

I know it's probably sacrilege, but I avoid the need for one of these by grinding half a dose, tamping a bit then grinding the rest and finishing the tamp. I'm using a Breville Barista Express so couldn't (easily) use one of these even if I wanted to.

I'm curious how you retain the magnets in it? Are they printed in, or mechanically added later? (I know very little about 3d printing, this just came up in my top-6-hour feed)

[–] naevaTheRat@lemmy.dbzer0.com 2 points 6 months ago (1 children)

I'm not really a coffee wanker so I don't know one way or the other what tamping halfway would do. I just want to be able to dump the grounds in, shake, and tamp.

The magnets are just push fit into little holes in the bottom. I just tap them in with blunt nail and a hammer.

[–] iamnotdunningkruger@lemmy.world 1 points 6 months ago (1 children)

coffee wanker

Lol wut

[–] naevaTheRat@lemmy.dbzer0.com 1 points 6 months ago (2 children)

Oh you know how coffee people are.

[–] iamnotdunningkruger@lemmy.world 3 points 6 months ago* (last edited 6 months ago) (1 children)

You 3D printed a dosing funnel.

You 3D printed a dosing funnel.

[–] naevaTheRat@lemmy.dbzer0.com 1 points 6 months ago

I refuse to call it that! My machine takes a charge thankyouverymuch. I dose heroin to cope with my self loathing.

Jokes aside it just makes stuff cleaner. You'll be horrified to know I don't usually bother with a needle tool, I think French press and moka pot are actually pretty nice (honestly a giant fan of French press), cold brew is delicious but I absolutely cannot be fucked with waiting hours for my coffee, and if people like milk and sugar it's fine although I do think we could all benefit from eating less sugar as I think acclimatising yourself to sweetness mutes normal flavours in food.

[–] maniacal_gaff@lemmy.world 0 points 6 months ago* (last edited 6 months ago) (1 children)

I haven't done much with magnets, but I saw one model where you pause the print halfway through, drop magnets into the holes, then continue the print and they get sealed in Amontillado-style.

[–] PlasticExistence@lemmy.world 0 points 6 months ago (1 children)

Pop the magnets into the paused print.

The magnets: "Hahaha. This is a fine joke, good sir!'

Resume print

Magnets: "Yes, a very funny joke indeed. Wait, sir, where are you going! Sir! SIR!!"

Walk away knowing that neither you nor anyone else will see those magnets again

[–] yokonzo@lemmy.world 0 points 6 months ago (1 children)

Oh God imagine being 3d printed alive into your casket

[–] DreadPotato@sopuli.xyz 1 points 6 months ago

Worst part is it taking forever for it to print the casket around you, and you're just lying there unable to do shit and just watch the casket close around you in ultra slow-mo. Like being buried alive with a tea-spoon for a shovel.

[–] tonyn@lemmy.ml 3 points 6 months ago (1 children)

A lighter will tidy up the stringing without making the mess that sandpaper will. Just don't linger too long or the part will warp. It should take less than a second to make the strings disappear with a lighter.

[–] IMALlama@lemmy.world 3 points 6 months ago (1 children)

Hot a air station, if you have one, will also do wonders here. I suspect an adjustable hot air gun would also probably work, but those things can put out some serious heat so be careful.

[–] tonyn@lemmy.ml 1 points 6 months ago

I actually use a Lexivon torch, and move quickly. Lots of heat in a precise location for a short amount of time.

[–] 01189998819991197253@infosec.pub 3 points 6 months ago (1 children)

Hey, that's neat! I use a scrap piece from a previous employer. It's a 2inch tall stainless steel combiner ring. Definitely not as cool as yours and definitely not light enough for magnetic holds. You win lol

[–] naevaTheRat@lemmy.dbzer0.com 4 points 6 months ago (1 children)

Yeah but yours isn't made of plastic so I think we can both find things to be pleased about.

Thanks for the kind words!

[–] 01189998819991197253@infosec.pub 4 points 6 months ago (1 children)

Oh, for sure! It is annoying having to hold it as I work with it. But, I don't have a 3D printer, so I did what I could with the tools at my disposal. I am happy with it :)

[–] naevaTheRat@lemmy.dbzer0.com 4 points 6 months ago (1 children)

If it's at all magnetic (I know some stainless isn't) then you could probably just slap a neodidlium magnet on either side to hold it. Or you could make something to locate the phlangey things on the portafilter and attach them to the outside of the ring? Could even be as simple as 4 nails with the tips ground off?

[–] 01189998819991197253@infosec.pub 1 points 6 months ago (1 children)

I have neodymium magnets from another project. I should do that. They're about 2cm in diameter, but I can probably cut them to size.

[–] yokonzo@lemmy.world 1 points 6 months ago (2 children)

I am by no means sure of this, but wouldn't cutting them throw off the magnetic alignment?

[–] naevaTheRat@lemmy.dbzer0.com 3 points 6 months ago* (last edited 6 months ago)

No. The magnetism comes from macroscopic ordering of microscopic features.

Basically you know how if you strap magnets together you get big magnet? small magnet is smaller magnets strapped together.

Magnets are very fragile though and cutting them is hard.

[–] 01189998819991197253@infosec.pub 1 points 6 months ago

I've broken several of them, and they kept their magnetism. Neodymium magnets are like friggin glass in their fragility, though.

[–] Gljvf 1 points 6 months ago

Pretty cool

[–] Wxfisch@lemmy.world 1 points 6 months ago (1 children)

Please keep in mind that you need to seal that print before you use it with food. Because of the layers, there’s are a ton of places for dirt and bacteria to hide that are impossible to clean. Additionally, depending on what kind of nozzle you used, heavy metals can end up in your print which you don’t want to then leech into your coffee. General advice is to just not use 3d prints first good, but if you really want to you should coat them in a food safe epoxy before using.

[–] dual_sport_dork@lemmy.world 1 points 6 months ago

This is good advice.

On the bright side for OP, his part should (hopefully) only come into contact with dry coffee grounds so some of those concerns are lessened.

In other applications -- sealant or not -- I can only imagine pouring hot coffee over a PLA part would not be a recipe for success...

[–] NuXCOM_90Percent@lemmy.zip -1 points 6 months ago

Heads up, make sure you use food safe filament for this. And I would still be rather wary of excessive micro plastics in my morning brew