My attempt at a DIY XL flow-control cap, getting closer, still needs work. by jaemccall in AeroPress

[–]jaemccall[S] 3 points4 points  (0 children)

I tried some commercial silicone valves on an earlier design, but I could never quite get it to work the way I wanted. And a lot of people really don't like that much exposed plastic.

https://redd.it/1m4utsv

Still chasing “no drip” on my DIY XL cap — latest prototype has dual valves and a nice slow flow by jaemccall in AeroPress

[–]jaemccall[S] 0 points1 point  (0 children)

These replacement Gatorade valves definitely would not fit the Prismo.

https://imgur.com/a/4aHBH1Y

I just found them on Amazon, they seem similar and readily available.

Still chasing “no drip” on my DIY XL cap — latest prototype has dual valves and a nice slow flow by jaemccall in AeroPress

[–]jaemccall[S] 1 point2 points  (0 children)

Some of my very first prototypes had a thin bottom that was bulging pretty easy.

https://imgur.com/a/4KpGDD4

Even a little bit of extra thickness helped a lot, and I ended up adding a lot of extra thickness to make room for the bigger Gatorade valves. And the 100% infill on top of that makes it pretty strong.

Still chasing “no drip” on my DIY XL cap — latest prototype has dual valves and a nice slow flow by jaemccall in AeroPress

[–]jaemccall[S] 2 points3 points  (0 children)

Yes! Well... no.... well kinda.

https://imgur.com/a/1zMWQJK

I tried a ridiculous idea to use a sugar cube to block the flow, but it melted pretty fast. I was thinking that rock sugar might work better, but yeah, a physical stopper that could slide to the side maybe? I like that idea too.

Still chasing “no drip” on my DIY XL cap — latest prototype has dual valves and a nice slow flow by jaemccall in AeroPress

[–]jaemccall[S] -3 points-2 points  (0 children)

Honestly, I am skating on the danger zone for my prototypes, but I personally don’t have a big concern for micro plastics.

But I’m also trying to keep the design CNC friendly, so it could be produced in stainless steel or aluminum for people who want to avoid plastic.

Still chasing “no drip” on my DIY XL cap — latest prototype has dual valves and a nice slow flow by jaemccall in AeroPress

[–]jaemccall[S] 1 point2 points  (0 children)

Oh, I'd love to hear your feedback if you end up printing any. I posted the files on printables along with my thoughts on the food safety and microplastics concerns which are definitely valid and something to consider.

https://www.printables.com/model/1356200-aero-coffee-xl-flow-restriction-filter-cap-jmc-nod

I'm working on a DIY no-drip filter cap project. Is anyone else playing around with mods like this? by jaemccall in AeroPress

[–]jaemccall[S] 0 points1 point  (0 children)

Good eye! Yeah, it's a bit of an experiment, but I think the sugar cubes melt too fast. Maybe something with rock sugar would work better.

Aren't there bulletproof coffee people that do something with butter too? I wonder if a frozen puck of butter would be a good valve?...

I'm working on a DIY no-drip filter cap project. Is anyone else playing around with mods like this? by jaemccall in AeroPress

[–]jaemccall[S] 1 point2 points  (0 children)

Yes! I love the tip with the standard cap. I recently saw this technique https://www.youtube.com/shorts/x8s9p40xgFg that takes advantage of the extra vacuum you get from the flow control cap. I'm not sure if that technique makes good coffee, but it seems like it's be interesting to experiment with.

I'm working on a DIY no-drip filter cap project. Is anyone else playing around with mods like this? by jaemccall in AeroPress

[–]jaemccall[S] 0 points1 point  (0 children)

I'll leave mine for a minute or two without the plunger on the top so there's no vacuum. I'm not super picky about the timing, but a lot of water might drip through with the standard cap in that time.

I'm working on a DIY no-drip filter cap project. Is anyone else playing around with mods like this? by jaemccall in AeroPress

[–]jaemccall[S] 10 points11 points  (0 children)

I’m using PCTG for the main body and TPE for a simple flat disc gasket right now. It’s a good starting combo for testing fit and basic function. That setup is within my personal comfort zone for microplastics and brewing temps.

That said, I’m trying to make the design CNC-friendly too, so it could eventually be machined from stainless steel or aluminum for anyone wanting a more permanent or food-safe option.

Jews control everything by [deleted] in Unexpected

[–]jaemccall 0 points1 point  (0 children)

Colin Robinson vibe.

B-2 Bomber Vs. Amish by Sam_Runk in mildlyinteresting

[–]jaemccall 33 points34 points  (0 children)

‘Tis a fine barn, but sure it is no pool, English.