Nostr notes by Jessica Rosenkrantz

We've just made our largest custom jigsaw puzzle yet with ...

2026-01-16T15:50:53Z

We've just made our largest custom jigsaw puzzle yet with ~4000 wood pieces! This is going to be insanely difficult to assemble

Anyone have board game suggestions for 4 to 5 year olds? We ...

2025-12-23T21:55:27Z

Anyone have board game suggestions for 4 to 5 year olds? We recently got Hoot Owl Hoot and it’s a big hit. Looking for more games with some strategy to them

It’s time for our one sale of the year! Take 20% off with code ...

2025-11-28T13:42:20Z

It’s time for our one sale of the year! Take 20% off with code holiday20 (ends 12/2/2025). The sale includes all of our puzzles and most of our jewelry.

I just want something close to a 100% keyboard with tactile ...

2025-11-26T03:27:55Z

In reply to nevent1q…kkht
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I just want something close to a 100% keyboard with tactile switches that isn’t black. Ideally I don’t want there to be a screen in my keyboard or a battery.

I’m shopping for a new keyboard and I can see how people end up ...

2025-11-26T03:27:08Z

I’m shopping for a new keyboard and I can see how people end up going to the extreme of making a fully custom keyboard from components

We are excited to offer a set of four limited edition ...

2025-11-20T17:02:55Z

We are excited to offer a set of four limited edition Radiolaria-inspired sculptures in our shop. These pieces take their inspiration from Radiolaria, microscopic unicellular sea creatures that build intricate skeletons from silica. Their delicate lattices and filigree-like structures are among the most complex and beautiful natural microstructures.
https://n-e-r-v-o-u-s.com/shop/search_tags.php?search=sculpture

One thing I appreciate about growing older is that I can reread ...

2025-10-26T02:39:03Z

One thing I appreciate about growing older is that I can reread books I enjoyed and I don’t remember anything about them. And if I want to reread a series, all of the books are already out. I don’t have to wait for the next one

This is the first rainbow my kids have ever seen ...

2025-10-24T23:24:16Z

In reply to nevent1q…hnhz
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This is the first rainbow my kids have ever seen

We saw an intense double rainbow tonight with supernumerary bands ...

2025-10-24T23:16:16Z

We saw an intense double rainbow tonight with supernumerary bands

We started letting our guinea foul outside and they’ve ...

2025-10-22T16:16:51Z

We started letting our guinea foul outside and they’ve discovered they can watch us through the garage door. Feel like we’re getting a taste of our own medicine here.

Every time someone asks me how things are going I have to explain ...

2025-10-12T17:57:27Z

Every time someone asks me how things are going I have to explain that small businesses are doing terrible across the board. Many of us have sales that are only 20% of what we normally do. It seems like a lot of people are completely oblivious to the fact that the economy is doing very poorly.

4) Flamed Tigersnail - Its shell has beautiful ridges along the ...

2025-09-19T13:52:58Z

In reply to nevent1q…2f3x
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4) Flamed Tigersnail - Its shell has beautiful ridges along the spiral. I read this snail can produce fluorescing slime! I guess I need a UV flashlight to carry in addition to my standard one

3) Ash-tree Bolete (Boletinellus merulioides) - The underside of ...

2025-09-19T13:51:36Z

In reply to nevent1q…te4s
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3) Ash-tree Bolete (Boletinellus merulioides) - The underside of this mushroom is halfway between gills and pores and gets its own special name "boletinoid"

2) Turquoise Elfcup (Chlorociboria aeruginosa) - when you see ...

2025-09-19T13:50:12Z

In reply to nevent1q…4lz8
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2) Turquoise Elfcup (Chlorociboria aeruginosa) - when you see turquoise wood in the forest, this is the fungus that is causing that

Last month we went camping on an island in the Adirondacks. ...

2025-09-19T13:49:33Z

Last month we went camping on an island in the Adirondacks. It's been relatively dry this summer but there were still a few mushrooms to spot. Here's some of my favorites I saw (plus a bonus snail)
1) Orange Mycena - these were inside a hole in a log. always a good idea to bring a flashlight with you to peak inside of nooks and crannies. That's often where the best stuff is! #fungi #mushrooms

I’m flying out of Albany today so I go to visit my sculpture ...

2025-09-10T17:26:17Z

I’m flying out of Albany today so I go to visit my sculpture which is on display in the airport

Word of the day: boletinoid Mushrooms having a structure ...

2025-09-03T17:08:23Z

Word of the day: boletinoid
Mushrooms having a structure intermediate between gills and pores. As seen in this ash-tree bolete. (I love these) #fungifriends

This tariff situation is absolutely exhausting and never-ending. ...

2025-08-19T12:39:08Z

This tariff situation is absolutely exhausting and never-ending. Example 1: we ship our wooden jigsaw puzzles to Canada. Puzzles are in the same category as all toys, which includes things like tricycles that are made of metal. Since puzzles are in the same harmonized code as tricycles, they are caught up in a 25% steel tariff, even though they’re made of wood!

It was worth the trip to Delaware to watch the prehistoric ...

2025-06-12T03:14:33Z

It was worth the trip to Delaware to watch the prehistoric horseshoe crabs mating under a full moon

Initially I thought I’d found some sort of old seaweed, but now ...

2025-06-11T21:36:41Z

Initially I thought I’d found some sort of old seaweed, but now I realize these are actually rubbery bryozoa!

Beach was teaming with horseshoe crabs this morning! We went to ...

2025-06-11T17:07:48Z

Beach was teaming with horseshoe crabs this morning! We went to Slaughter Beach in Delaware at high tide

Sometimes you just have to take an impromptu trip to see ...

2025-06-11T00:43:25Z

Sometimes you just have to take an impromptu trip to see horseshoe crabs mating under a full moon

let's zoom in so you can see just how weird this slime mold ...

2025-05-27T18:15:31Z

In reply to nevent1q…42v6
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let's zoom in so you can see just how weird this slime mold fruiting body is

Here's the same slime mold the next day. Amazing how quickly ...

2025-05-27T18:13:29Z

In reply to nevent1q…7ge5
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Here's the same slime mold the next day. Amazing how quickly it changes structure. I can see why they call this one "cotton candy slime" #slimemold

I found a lovely slime mold while gardening this weekend. I was ...

2025-05-27T18:11:16Z

I found a lovely slime mold while gardening this weekend. I was originally annoyed that [@nervous_jesse](https://mathstodon.xyz/@nervous_jesse ) left a pile of rotting logs in the yard. But now I'm not

We saw a porcupine while hiking today! I’ve never seen a wild ...

2025-05-17T22:40:55Z

We saw a porcupine while hiking today! I’ve never seen a wild one before

For years, we've been making Hyphae lamps that fit in your ...

2025-05-14T17:40:28Z

For years, we've been making Hyphae lamps that fit in your hand. Now we're working on something a bit bigger

One thing I’ve been doing lately is visiting the creek with my ...

2025-04-30T18:46:40Z

One thing I’ve been doing lately is visiting the creek with my kids and watching frogs grow. Last week they were just strings of eggs, this week we have tadpoles!

The radiolarian cleaned up nicely ...

2025-01-24T16:28:09Z

The radiolarian cleaned up nicely

I could watch the ice discs spinning all day. Here’s a ...

2024-12-24T17:12:53Z

In reply to nevent1q…tv5m
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I could watch the ice discs spinning all day. Here’s a wikipedia article on how they form https://en.m.wikipedia.org/wiki/Ice_circle

Took the kids up to Kaaterskill Falls today and saw some giant ...

2024-12-24T17:06:28Z

Took the kids up to Kaaterskill Falls today and saw some giant ice discs spinning in the creek

thanks!

2024-12-18T14:59:21Z

In reply to nevent1q…x5du
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thanks!

If anyone wants to purchase one of our "limited edition" ...

2024-12-18T14:32:27Z

If anyone wants to purchase one of our "limited edition" stainless steel rings or pendants in a rustic, weathered finish...here they are: https://n-e-r-v-o-u-s.com/shop/search_tags.php?search=rustic%20steel

A bakers rack full of Giant Geode jigsaw puzzles, each with a ...

2024-12-15T14:15:28Z

A bakers rack full of Giant Geode jigsaw puzzles, each with a unique pattern and shape https://n-e-r-v-o-u-s.com/shop/generativeProduct.php?code=386

These pieces came out of the work we were doing for our Patreon ...

2024-11-29T15:16:05Z

In reply to nevent1q…0mfs
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These pieces came out of the work we were doing for our Patreon making 3D printed radiolaria sculptures and then essentially trying to shrink them down as tiny as we can to make them in metal

My favorite piece is this double-sided Radiozoa necklace. The ...

2024-11-29T14:44:38Z

In reply to nevent1q…4sjg
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My favorite piece is this double-sided Radiozoa necklace. The front side is spiky, but the back is cut open to reveal the inner structure. This one comes on a long chain so you can fiddle with it
https://n-e-r-v-o-u-s.com/shop/line.php?code=23

I’m so excited to share Radiozoa: a jewelry collection inspired ...

2024-11-29T13:52:58Z

I’m so excited to share Radiozoa: a jewelry collection inspired by the microscopic skeletons of radiolaria. The forms are algorithmically generated and cast in sterling silver or brass from 3D-printed wax. I hope you love them as much as I do! available now: https://n-e-r-v-o-u-s.com/shop/line.php?code=23

They’re here!!!!! ...

2024-11-27T14:22:50Z

They’re here!!!!!

Sketched up a sculpture concept for the people who cold called ...

2024-11-21T13:05:54Z

Sketched up a sculpture concept for the people who cold called about a 20x10’ sculpture. Probably won’t go anywhere but you never know

Fascinating piece on @npub1qer…zunx on the fancy turning ...

2024-11-20T14:30:30Z

Fascinating piece on The Public Domain Review (npub1qer…zunx) on the *fancy* turning machines of the 1800s and how they were used to make Spirograph like patterns in metal https://publicdomainreview.org/collection/fancy-turning/

I finally started packing the radiolaria 3D-prints for my patreon ...

2024-11-17T19:12:41Z

I finally started packing the radiolaria 3D-prints for my patreon supporters today. I’m going to miss these!

I made a mushroom costume for my son (and one for me too of ...

2024-10-28T00:55:02Z

I made a mushroom costume for my son (and one for me too of course)

Working on new radiolaria jewelry designs for silver and brass ...

2024-10-08T19:47:51Z

Working on new radiolaria jewelry designs for silver and brass (will be lost wax cast from 3d-prints)

every year I get the Flickr pro renewal email and I still ...

2024-10-07T14:45:16Z

every year I get the Flickr pro renewal email and I still can't figure out where to move my photos to. I haven't been posting there anymore but I don't want them to disappear https://www.flickr.com/photos/jrosenk/

Some lovely #lichen from my hike #lichensubscribe #catskills ...

2024-09-22T19:27:41Z

Some lovely #lichen from my hike #lichensubscribe #catskills

Spent the morning hiking to Sunset Rock with my family. This is ...

2024-09-22T19:06:06Z

Spent the morning hiking to Sunset Rock with my family. This is why we live in the Catskills

Just restocked a lot of silver and brass jewelry pieces! Hyphae, ...

2024-09-18T17:12:19Z

Just restocked a lot of silver and brass jewelry pieces! Hyphae, porifera, cell cycle and reaction pieces are all available once again https://n-e-r-v-o-u-s.com/shop/search_tags.php?search=Silver

We’re creating one new radiolarian 3D print every day for our ...

2024-09-13T13:12:10Z

We’re creating one new radiolarian 3D print every day for our Patreon. Here’s our latest creations

Our Radiolaria collection is growing daily. Let’s hope the ...

2024-08-21T00:15:50Z

Our Radiolaria collection is growing daily. Let’s hope the 3d-printer doesn’t break

The radiolaria continue to multiply! We’re designing and ...

2024-08-19T19:13:33Z

The radiolaria continue to multiply! We’re designing and printing one every day for our Patreon subscribers https://www.patreon.com/nervoussystem

I’ve just heard that Shapeways has shutdown 😭 Now taking ...

2024-07-02T20:31:19Z

I’ve just heard that Shapeways has shutdown 😭 Now taking recommendations for 3-D printing providers.

It’s #slimemoldsunday! This is one of my favorite finds, the ...

2022-11-20T13:46:35Z

It’s #slimemoldsunday! This is one of my favorite finds, the Pretzel Slime Mold (Hemitrichia serpula) #mosstodon #slimemold

Hi! I’m Jessica and I’m a #generative designer in the ...

2022-11-19T12:45:27Z

Hi! I’m Jessica and I’m a #generative designer in the Catskill Mountains. My design studio is called Nervous System http://nervo.us. We create #art, #jewelry, #lighting, and jigsaw #puzzles inspired by natural patterns and made via code and digital crafts (mostly #lasercutting and #3dprinting)
I’m obsessed with #fungi, #lichen, #coral and other weird creatures! I’m mom to a toddler, a baby and 3 cats #introduction #introductions