Six years ago I built a little script to scrape all of the public GIS data from the Province of PEI’s GIS Data Layers website; the script still works, and you can grab it here.

By way of making sure it still works, I ran it, and grabbed all the data–1.2 GB in all.

One layer caught my eye in the downloads directory, Lidar_Ct.SHP. I loaded it up into QGIS and this lovely rendering of the Island appeared before me:

Rendering of the PEI LIDAR contours

This is one of those situations where it’s helpful not to see the trees in the forest: zoom in closer and all you see is a confusing thicket of contour lines, but zoom out to the entire Island, and it’s rich Corinthian leather.

Want to try this at home? Follow these steps:

  1. Download an install QGIS (it’s free).
  2. Download and unzip the LIDAR GIS layer (that’s a direct-download link to save you steps).
  3. Open the resulting Lidar_Ct.shp file in QGIS.
  4. Enjoy.
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LIDAR  •  Prince Edward Island  •  GIS

Oliver read this post from earlier today about animal testing while he was at school today.

I know this because in his communication book there was a note describing how he’d made a poster this afternoon called “cruelty-free and forever against animal testing.”

I think this is the way education is supposed to work.

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Animal Testing  •  Blogging  •  Oliver

It gives me great comfort that the entrance to Catholic Family Services Bureau here in Charlottetown sports a rainbow flag. It tells me I’m welcome here, no matter my assumptions.

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One of my favourite possessions is a custom-made type holder from Japan that I purchased in 2015.

In the two years since it arrived, I’ve seldom had occasion to use it; that’s okay, as my purchase was as much to express my support for the creation of such a well-crafted object as it was to acquire a tool I’d immediately put to use.

But today, at long last, I finally had a job where it was exactly what I needed.

I’ve been printing 3D Pie Men for The Handpie Company for the last few hours, and I needed a way to customize the piece of chipboard I fashioned to act as their temporary home while en route to Borden.

So I opened a drawer of 36 point sans serif type, assembled the letters for PIE MAN, got out a green stamp pad I bought at Yu Yo back in March, and I was ready for action:

PIE MAN in type holder

Using the heel of my hand for pressure, I carefully laid down the type onto the chipboard, and, rocking back and forth, pressed down as hard as I could. The result is not letterpress-quality, but it will do just fine for this temporary Pie Man holder:

Pie Man Packaging

For those that have been following along (start here, then read here), Pie Men Mark IV are about 2mm thinner than the previous version, following on from feedback from Handpie HQ.

There’s still some work to be done: a desire for scalloped pie-like edges, and slightly tapered struts for letterboard-insertion. But for now, Mark IV Pie Men are ready for duty and should be up on the Handpie letterboard shortly.

Want to see them up close? Go buy a yourself a handpie!

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Type Holder  •  Letterpress  •  Japan  •  The Handpie Company  •  3D Printing

For reasons that will become much more obvious shortly, I’ve been spending a lot of time trying out various ways to order food and drinks for pickup using mobile apps.

Starbucks has a very slick mobile app, with solid logistical support for it in their restaurants, and because you need to preload the mobile app with a minimum of $25, I’ve had more experience with it than others (despite not really having a taste for Starbucks coffee).

The one thing about the app that’s confounded me is that I haven’t been able to figure out how to order a decaf espresso macchiato.

I can select the cup size, the number of shots, the milk type and degree of froth, the sweetener, and whether I want extra water or not.

I can choose to add caramel sauce or cinnamon dolce syrup, or sugar-free cinnamon dolce syrup.

But there’s no way to select decaf coffee.

So I contacted Starbucks using the form linked to from the app, and their quick reply was:

I am so sorry that the mobile application is not set up for the option of a Decaffeinated Espresso Macchiato due to no decaf option. I will be sure to share your feedback to the correct department to be considered on the next update. Once again I am very sorry for the inconvenience.

So at the very least I’m not crazy: there is no option for selecting decaf.

This is such a bizarre design decision, that runs contrary to the app’s flexibility otherwise, that I have to imagine it’s tied to a process issue that’s not obvious.

Any thoughts?

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Starbuck  •  Apps  •  Ordering

I found a bottle of Expo-brand white board cleaner on the table outside my office, and I was curious to know what was in it, so I Googled “expo whiteboard care msds” and ended up at this list of Material Safety Data Sheets, one of which was for Expo Cleaner in Bottles.

This MSDS lists the composition of the white board cleaner as a 0.1% to 2% concentration of 3-butoxypropan-2-ol, another search for which leads me to another MSDS for this ingredient alone, under the brand name “Dowanol PnB,” from Dow Chemical. It’s described there as follows:

DOWANOLTM PnB glycol ether is a fast-evaporating, hydrophobic glycol ether with high solvency and excellent coupling abilities. DOWANOLTM PnB glycol ether is extensively used in heavy-duty cleaning formulations. It does an excellent job of solvating and coupling hydrophobic greases and oils in household as well as industrial formulations. It is partly water soluble and miscible with most organic solvents. DOWANOLTM PnB glycol ether also provides excellent surface-tension lowering ability. In coatings DOWANOLTM PnB offers good coalescing ability in systems requiring fast evaporation.

If you’re curious, here’s what the molecule looks like.

But back to the rabbits.

Here’s Section 11, Toxicological Information, from the Expo Cleaner in Bottles information:

Section of the Expo White Board Cleaner MSDS

I was just quickly breezing through the details on the sheet when the word “Rabbit” jumped out at me.

“Rabbit?”, I wondered to myself. What does this have to do with rabbits?

Some more Googling led me to the Canadian Centre for Occupational Health and Safety page about LD50, which defined the term thus:

LD stands for “Lethal Dose”. LD50 is the amount of a material, given all at once, which causes the death of 50% (one half) of a group of test animals. The LD50 is one way to measure the short-term poisoning potential (acute toxicity) of a material.

Toxicologists can use many kinds of animals but most often testing is done with rats and mice. It is usually expressed as the amount of chemical administered (e.g., milligrams) per 100 grams (for smaller animals) or per kilogram (for bigger test subjects) of the body weight of the test animal. The LD50 can be found for any route of entry or administration but dermal (applied to the skin) and oral (given by mouth) administration methods are the most common.

So if I’m reading this correctly, 50% of rabbits that were given a dermal 3100 mg/kg dose of 3-butoxypropan-2-ol died as a result.

The heart of the popular opposition to animal testing has focused on cosmetics; indeed the Body Shop page on the issue is headed by adorable-looking rabbits. I don’t know if I’ve ever come across office products, like white board cleaner, that make animal testing claims; it had never occurred to me that the cousins–or at least half of the cousins–of the Body Shop’s rabbits were killed to allow me to feel safe cleaning my white boards.

I’d like to know more about this.

🗓️
MSDS  •  Rabbits  •  Animal Testing  •  White Board Cleaner

Here’s Oliver running Aldus PageMaker inside a browser that’s running a Mac System 7 emulator on his contemporary MacBook.

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System 7  •  Mac  •  MacBook Air  •  Oliver  •  History  •  PageMaker

Thanks to the generosity of friend Bob, Pie Man 3.0 was ferried to Borden for review by staff in the Department of Three Dimensions at Handpie Company HQ. Here he is on the board.

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The office paper towel dispenser has been broken for months, and we’ve been forced to use loose rolls of towels.

But today the last loose roll random out, leaving the only the paper towel in evidence the one locked in the broken machine behind a lock only opened with a proprietary key that I don’t have.

Wet hands. What to do?

It turns out that a standard-issue spork can unlock the machine.

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Design  •  Spork  •  Reinventorium
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Fox  •  Cars  •  Eternal Battle

About This Blog

Photo of Peter RukavinaI am . I am a writer, letterpress printer, and a curious person.

To learn more about me, read my /now, look at my bio, listen to audio I’ve posted, read presentations and speeches I’ve written, see things I’ve favourited elsewhere, or get in touch (peter@rukavina.net is the quickest way).

I have been writing here since May 1999: you can explore the 25+ years of blog posts in the archive.

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