Sign in

Jonathan Kozolchyk

@kozolchyk.com
662 followers 596 following 773 posts

Leo Security leader by day, Family man by night. Interested in dogs, BBQ, coffee, home automation, 3d printing and design, TLS certificates, and PKI. Thoughts mine. Spoiling my dogs Lexapro and Paxil. I was @seakoz on Twitter

PostsRepliesMedia
Jonathan Kozolchyk @kozolchyk.com · 03/10/2026
Today in “pretending I know how to do things”. I ordered a set of portafilter handles from a dude in Turkey and now I’m finishing them myself. I know nothing about wood working. Thankfully I have friends that do.
Three La Marzocco style uninished walnut portafilters. They actually look more like maple than walnut in this pic, they’re so white. A walnut portafilter after one coat of waterlox. The brown has taken over and it definitely looks like Walnut. The portafilter is mounted to a scrap
Piece of wood by an m12 socket. Yes, I made this just to seal them. A walnut portafilter after one coat of waterlox. The brown has taken over and it definitely looks like Walnut. The portafilter is mounted to a scrap
Piece of wood by an m12 socket. Yes, I made this just to seal them. A walnut portafilter after one coat of waterlox. The brown has taken over and it definitely looks like Walnut. The portafilter is mounted to a scrap
Piece of wood by an m12 socket. Yes, I made this just to seal them.
000
Jonathan Kozolchyk @kozolchyk.com · 27/09/2026
My life would get so much easier if Paxil would agree to use the dog door.
Paxil the dog sleeping
010
Jonathan Kozolchyk @kozolchyk.com · 23/09/2026
Lexapro and Paxil
Two dogs. One named Lexapro, the other named Paxil
010
Jonathan Kozolchyk @kozolchyk.com · 22/09/2026
Out of context these scoops generate questions.
A purple scoop with the writing “lexapro” and a green scoop with the writing “Paxil”. Side view of the same scoops 
140
Jonathan Kozolchyk @kozolchyk.com · 20/09/2026
The real prize.
A gen-u-wine LM portafilter head. Easily identifiable because of the Marzocco - lion sculpture image on top of the handle screw hole
The other side of the portafilter head. Showing it’s a single spout portafilter. The single spout alone costs more than I paid for the entire used portafilter
010
Jonathan Kozolchyk @kozolchyk.com · 20/09/2026
In case you’ve ever wondered what the inside of a La Marzocco portafilter handle looks like. This one died coming free of the portafilter head.
A LM Portafilter handle with the rubber ripped off like a pack of wild badgers went at it. Showing a hexagonal steel core
110
Jonathan Kozolchyk @kozolchyk.com · 03/09/2026
I love the Apple TV as a media player because it doesn't have ads. Unfortunately, I can't get my remote to behave reliably so I made my own. I bought a reTerminal Sticky and turned it into a remote. More details here: github.com/CitizenRacer...
An e-paper touch screen configured as a remote for Apple TV
110
Jonathan Kozolchyk @kozolchyk.com · 26/07/2026
Meet Paxil our newest addition. He desperately wants to play with Lexapro but apparently Lexapro isn’t interested in younger men.
A small Australian multigenerational labradoodle. In brown. 
A small Australian multigenerational labradoodle. In brown. On his back looking derpyA small Australian multigenerational labradoodle. In brown. Sitting
A small Australian multigenerational labradoodle. In brown. Stalking
030
Jonathan Kozolchyk @kozolchyk.com · 07/06/2026
In prep for Paxil coming I’ve setup a crate. These Tapo cameras are $18 and work great. I’ve disabled internet access for them cuz I’m not crazy. They plug into the Unifi ecosystem too. Next up is a camera for the play pen.
Tapo C120 image of a dog toy in a dog crate. Image of a dog crate with a camera attached and a dog toy simulating the dog Close up of the camera mount on the dog crate.
020
Jonathan Kozolchyk @kozolchyk.com · 05/06/2026
030
Jonathan Kozolchyk @kozolchyk.com · 07/05/2026
Today my team ran a practice scenario where Lexapro hacked a satellite to mine crypto. Out of an abundance of caution we’ve taken away her phone.
An image of the elite hacker Australian Multigenerational Labradoodle: Lexapro
030
Jonathan Kozolchyk @kozolchyk.com · 20/04/2026
Deep in my charcoal era.
020
Jonathan Kozolchyk @kozolchyk.com · 10/10/2025
I enjoy owning a laser.
Two coins made of brass engraved by a laser. The left coin says “no dieu ni maître” and has a dove escaping a broken cage. 

The right coin has a broken crown and says “no gods no masters”
030
Jonathan Kozolchyk @kozolchyk.com · 29/09/2025
Sending a package to @quinnypig.com. I wanted to make sure UPS knew it had no drugs in it.
4361
Jonathan Kozolchyk @kozolchyk.com · 28/09/2025
2180
Jonathan Kozolchyk @kozolchyk.com · 17/08/2025
020
Jonathan Kozolchyk @kozolchyk.com · 16/08/2025
Driving in Ireland is a wild experience. Never mind the fact you have to drive on the left. Even without that it would be wild. The roads are extremely narrow, what would be a one lane road in the us is two lanes in opposite direction. People park in the road and you just drive around their cars.
030
Jonathan Kozolchyk @kozolchyk.com · 25/07/2025
Getting better at this coin thing.
A coin with a dragon head and a staff and a sword that says “we make our own luck” on both sides.
050
Jonathan Kozolchyk @kozolchyk.com · 22/07/2025
24 minutes to go 4 miles. This I5 work can’t finish soon enough.
000
Jonathan Kozolchyk @kozolchyk.com · 13/07/2025
I made my son a brass coin. The laser etched it out of a brass blank. Then I ran it through a magnetic polisher and aged it with “Brass Black”. He loved it. Now he wants to make other coins.
A dungeons and dragons themed brass coin with a dragon head in the center with a sword and a staff on the sides and the words “we make our own luck” on the outside
040
Jonathan Kozolchyk @kozolchyk.com · 04/07/2025
000
Jonathan Kozolchyk @kozolchyk.com · 03/07/2025
I have to get the ventilation setup, build the enclosure, figure out lightburn... Or maybe I'll just plug it in tomorrow in my garage and see what happens.
an image of a Fiber laser in the shipping crate it arrived in. It's well packed with lots of foam blocking inside a wooden crate.
140
Jonathan Kozolchyk @kozolchyk.com · 26/06/2025
This was either an amazing decision or a horrible one.
A 60w MOPA fiber laser
100
Jonathan Kozolchyk @kozolchyk.com · 13/06/2025
Today is Lexapro's second birthday. To celebrate, I brought her to work and gave her a double dose of CBD.
A picture of a derpy Australian Multigenerational Labradoodle in cream color with a white belly.
250
Jonathan Kozolchyk @kozolchyk.com · 06/05/2025
Every once in a while I like to get low and whisper into Lexapro's ear "In an apocalypse, you're food".
A derpy looking labradoodle smiling with her tongue out. Her name is Lexapro.
110
Jonathan Kozolchyk @kozolchyk.com · 05/05/2025
Weekend project: running ventilation for my H2D. The inline fan and the printer both talk to home assistant so fan is automated and runs when the printer does.
010
Jonathan Kozolchyk @kozolchyk.com · 14/04/2025
I saw a black Rivian R1S with the license plate TUFLESS and it made my day.
A picture of the dragon “Toothless” from “How to train a dragon”
030
Jonathan Kozolchyk @kozolchyk.com · 26/03/2025
Pro tip: when branding wood, it’s much better to get the wood wet first. It results in a crisper brand. Also don’t leave the brand on the wood too long or press down too hard. Not necessary.
Brand on the left is dry. Brand on the left was done wet. Wood is walnut. A maple cutting board I’m making with a very crisp brand. A second maple cutting board. The brand is a 3” ‘k’ in a circle. Close up of the branding iron.
030
Jonathan Kozolchyk @kozolchyk.com · 23/03/2025
Spent the day roasting coffee. 33ish pounds turned into 28ish roasted.
A picture of a bag of coffee that says “craft roasted” 4dhi (4 doodles heavy industries) and the coffee variety: Ethiopian yirgacheffe.
050
Jonathan Kozolchyk @kozolchyk.com · 04/02/2025
In awe at the amazing professionals at Children’s Hospital. On Friday our son’s pediatrician sent an xray to their ortho team. By that evening he was admitted and on Saturday he had surgery for SCFE. Everyone at the hospital was amazing and the boy is set for a full recovery.
070
Jonathan Kozolchyk @kozolchyk.com · 28/01/2025
This looks much, much better.
050
Jonathan Kozolchyk @kozolchyk.com · 26/01/2025
lol. It’s not going to work.
We are aware that the Bambu Connect encryption was compromised. Please note that this tool is still in beta. We are actively working to implement stronger encryption methods to ensure a secure release when the tool becomes publicly available. We appreciate your understanding and patience.
030
Jonathan Kozolchyk @kozolchyk.com · 26/01/2025
Only photo I got.
010
Jonathan Kozolchyk @kozolchyk.com · 24/01/2025
This coffee was sold to me as a "light" roast. I think they sent me the wrong bean by mistake. There is no way this is a light roast. I sent them an email with pics, let's see what they say.
a picture of a handful of oily coffee beans on top of a roast color chart demonstrating that it's clearly French or worse
040
Jonathan Kozolchyk @kozolchyk.com · 20/01/2025
Another new roasting toy. Works amazingly well.
020
Jonathan Kozolchyk @kozolchyk.com · 20/01/2025
Hello Beautiful. New roaster is seasoning nicely.
130
Jonathan Kozolchyk @kozolchyk.com · 18/01/2025
My first time using a pelican style case. I feel very organized.
020
Jonathan Kozolchyk @kozolchyk.com · 13/01/2025
000
Jonathan Kozolchyk @kozolchyk.com · 07/01/2025
So long comcast.
021
Jonathan Kozolchyk @kozolchyk.com · 02/01/2025
Due to years of economic hardship, bowling in Canada has been reduced to only five pins and a much smaller ball while the price has climbed. Thanks Trudeau.
110
Jonathan Kozolchyk @kozolchyk.com · 02/01/2025
010
Jonathan Kozolchyk @kozolchyk.com · 27/12/2024
Oh man it gets better.
0103
Jonathan Kozolchyk @kozolchyk.com · 24/12/2024
The derpiest of turkeys.
010
Jonathan Kozolchyk @kozolchyk.com · 24/12/2024
120
Jonathan Kozolchyk @kozolchyk.com · 22/12/2024
Please take a moment to appreciate Lexapro’s new coat.
A derpy, 35lb, Australian multigenerational labradoodle in a plum colored carhart coat.
110
Jonathan Kozolchyk @kozolchyk.com · 18/12/2024
This week I left Xfinity for Quantum Fiber. It feels good man. Feels real good.
A speed test showing symmetric 2.3gbps speeds and 2.842ms ping time
160
Jonathan Kozolchyk @kozolchyk.com · 16/12/2024
Lexapro, the corporate lackey.
a picture of a seated tan labradoodle with an ear flipped back wearing an AWS branded bandana in Amazon Orange.
010
Jonathan Kozolchyk @kozolchyk.com · 16/12/2024
This feels perfectly legitimate
110
Jonathan Kozolchyk @kozolchyk.com · 15/12/2024
Find me on slack. I’ll share some details. I’m a big fan of my unifi stack.
010
Jonathan Kozolchyk @kozolchyk.com · 14/12/2024
Lexapro is the most aggressive cuddler ever. I’ve never experienced a dog that will force herself into physical contact the way she does. She had just met the person in this photo before leaning in to them.
040