A tooth grinding

This morning I had a dental appointment. The first of two to get a crown fitted to a molar with some issues. My dentist noted this at my last regular cleaning a few weeks ago, and recommended I get the crown fitted soon to avoid more major work on the tooth in the future.

After injecting some anaesthetic, the dentist took a cool 3D scan of my teeth with a new gadget that I haven’t seen before. Being an imaging professional, with experience in 3D reconstruction, this was actually fascinating. The scanner had a probe head that the dentist moved around the teeth from all angles, and I could see it building up the 3D model in real time on the display screen. It also had colour capture, so the model was realistically coloured, with my gums and teeth showing very realistically.

Then once my mouth was numb, he started grinding down the molar, shaping to fit into the concavity in the bottom of the new crown. Then he did another scan, to get the shape of the tooth stump for moulding the inside of the crown. Then he fitted a temporary plastic cap to protect the stump for the next two weeks, until my next appointment, when the newly produced custom crown will be fitted. The whole process took a bit under an hour.

I went to pick up Scully from my wife’s work, and we walked home. I wanted to wait until the anaesthetic wore off before I ate lunch, to avoid accidentally biting the inside of my cheek while chewing. But it was still keeping my mouth numb by 1pm!

Eventually I walked with Scully up to the fish & chip shop. I ordered a chicken burger. Usually I’d get chips, but today I felt like potato scallops, so I got some of those instead.

As the anaesthetic wore off, my tooth started to ache a bit. Not too bad, but definitely noticeable. Hopefully that will wear off over the next day or so.

This afternoon I worked on a science class on basic astronomy, for my online science student’s next class tomorrow. It’s all about the solar system, Earth’s orbit, the moon, seasons, that sort of thing.

New restaurant for dinner

Not much to report today. I did four critical thinking classes in the morning, had some lunch, and prepared the new topic for the next week, on Bikeshedding, or really a simplified version involving “thinking about the wrong thing”.

Then late in the afternoon I took a train into the city for this evening’s Image Processing tutorial at the university. The students are into their project preparation work, and will be submitting the first of two reports this Friday, followed by three more weeks of working on the projects.

Before the class, I went to a new place for dinner, called A Bowl of Noodles. It’s Shanghainese food, with an extensive menu and very good online reviews. I tried the fried pork chop with rice cakes, which was pretty good, but I’m keen to go back and try some other things.

When I sat down at one of the outside tables (since it was a nice evening), there was a woman there already, with a bowl of noodles and a bottle of Asahi beer. She looked like a student. As I waited for my meal to arrive, a waitress brought her a plate of six steamed buns. And then a few minutes later another plate of eight fried dumplings. The waitress looked a bit confused, like there’d been some mix-up with the order, and was about to take the plate away again, but the woman said, “Yes, I ordered all of this. I’m hungry.” And she gave the waitress her empty beer bottle and ordered two more beers! She wasn’t overweight, either, so I guess she must just have a fast metabolism or something.

Not much happening Sunday

I worked on some comics, did a 5k run, ate lunch, planned out my calendar of classes for the next month around interruptions for an upcoming ISO Standards meeting and the repainting of my home, did a bit of random cleaning an reorganising, and thought about things I could eBay to get rid of them. And had a bunch of online classes to teach in the evening.

Not much else to say about today. I planned to run 7.5k, but it was hot and I gave up at 5k. The next few days should be a bit cooler.

Short games night, a new shelf, cleaning up

Friday evening was online board games night. However I went out with my wife for dinner first, to the local Greek restaurant. I tried their duck dish for the first time, in a traditional orange sauce, with vegetables, and it was pretty good.

Yesterday was very warm, and today was hotter, 28°C and 29°C. A blast of summer in early spring, well above the average temperatures for this time of year. In another sign of the advancing seasons, the channel-billed cuckoos have returned from their winter migration north. One has apparently laid an egg in a currawong nest just outside our bedroom window, and it’s hatched. This morning at daybreak I heard the raucous calls of the cuckoo chick and the more melodic calls of the currawongs feeding it. It’s probably going to be a loud morning every day for the next few weeks.

I didn’t plan on doing a run today, as my wife goes to the gym early and I wanted to stay with Scully, and it would be too hot to run by the time she got home. So instead i took Scully on an early walk before the day got hot, to the hardware store in search of that elusive offcut piece of wood for our planned laundry shelf. They had a bunch of offcuts, that were tantalisingly close to the size we wanted, but just a bit too small. So I left them.

I’m baking sourdough today, as we’ve run out of bread, which meant I had none for lunch. So we walked out to a nearby cafe for lunch. They had a special chipotle chicken burrito which I’ve had one before and liked, so I had that.

After we got home we looked at the laundry and discussed options for things. My wife suggested making the shelf a bit narrower than I was planning, and inly using it to store stuff like laundry powder and cleaning items, and putting a new laundry basket on top of the washing machine instead of up on the shelf, so it would be easier to access. This sounded goo, do I re-evaluated the size of the shelf… and realised that one of the pieces of offcut board I’d seen this morning would be big enough! I quickly dashed to the car and drove over to the hardware store, hoping the offcuts hadn’t been cleared out.

I found a piece the perfect size. Melamine coated particle board, about 600 mm long and 350 mm wide. I don’t even need to cut it to the right size – it’s basically perfect! I also grabbed two right angle brackets, and a new laundry basket, a foldable cloth one with bamboo frame that is wide and shallow, to replace our old wicker basket which is tall and narrow. I’ll attach the brackets to the wooden board with screws, and then after we get the place repainted next month I’ll drill holes in the laundry wall to mount the new shelf.

Th major spring clean proceeds. We cleared out some of the book cases today, which had shelves of old photo albums, from the pre-digital days. I’m going to scan the photos and then we’ll put them into storage boxes and store them away, freeing up a lot of shelf space. There’s a lot more cleaning and reorganising to do, and it’ll get more hectic as we approach the repainting.

Pinhole and schlieren imaging

Today I taught two classes this morning. After lunch I went back to Wenona School for another meeting with the Science Club students there. We continued working on the pinhole cameras we built a few weeks ago. At the time we ran out of tracing paper and made two of the boxes with tissue paper instead, which is both more fragile and also less translucent, so it was definitely not as good. Today we had more tracing paper, which we used to replace the tissue paper. We also trimmed one of the other boxes more neatly and stretch the tracing paper more flat across the opening.

After that, I helped start setting up a schlieren photography setup. We mounted a concave mirror on a retort stand with a couple of clamps, and then used a pinhole taped to a xenon bulb light to get a bright beam of light, and found the focal distance of the mirror and focused the light onto a screen next to the light source. For the next step we needed a knife edge and a camera, but time was running out and the lab assistants helping us couldn’t get them in time. So we left the remainder of the setup for next time.

Well be taking a two-week break for the end of term holidays, and then when we come back in three weeks hopefully we can finish it off and take some cool photos of things like the turbulence above a candle flame.

On the way back home I picked up Scully from my wife’s work, and then I had three more classes this evening. A pretty full day!

A new kitchen bin

The home mini-renovation proceeds apace. Today I went to the hardware store – a different branch, actually, in a further suburb. The store there is much bigger than the one near us. I went to get a new kitchen waste bin, small enough to fit into the cabinet space under the kitchen sunk. I got a 17 litre bin, only a bit smaller than the current 20 litre size.

When I got home I cleared out enough space for it under the sink and slotted it in. I didn’t even end up having to remove anything from under the sink – just rearrange it a bit. I took the old bin down to the garage and will discard it during the next household materials collection in a couple of weeks. The kitchen floor space now feels cleaner and more spacious.

I also checked for wood offcuts to make my new laundry shelf. I figured this larger store would have more offcuts to rummage through, but when I checked there were one at all! So I’ll continue my quest for the perfect offcut.

This morning I did a 5k run. And around lunch time another handyman came, this time to check our kitchen floor. It’s wooden parquetry, and in need of a sanding and resurfacing after years of scuffing. The guy measured it up and gave a quote for the work. He suggested we do it after the repainting we have planned for the end of October, because the painters may scuff the floor with stepladders or leave paint drips on it, so it’s better to resurface the floor after that.

This evening I did the first three critical thinking classes of the new Generation Gap topic. It’s an interesting topic, but the structure and questions are a bit more work for me than the last couple I’ve done. More thinking on my feet to run the class smoothly as we move through the topic.

Bathroom floor polishing and kitchen light installation

Today was a busy day – not only for me, but also for the two tradesmen who came in to do jobs.

The first one was a guy who restores stone surfaces. Our bathroom has marble floor tiles and they had become rough and pitted in places with age and various bathroom chemicals. one of the worst bits was this dirty looking stain, which I’ve tried cleaning but never managed to get out.

Marble floor stain removal

As part of the grand spring cleaning and mini-renovation, I’d booked a guy to come and polish the bathroom floor. He arrived at 8:00 and spent most of the day polishing and working on the floor, including inside the shower stall. It must have been back-breaking work. He ground the stained area to “open up the pores” as he said, and then used a chemical treatment to extract the stain. He also worked on the rough areas, mostly inside the shower stall, probably caused by various body wash and shower cleaning products.

The result at the end of the day is really good. The floor is silky smooth everywhere again, including the previously sandpaper-rough areas inside the shower. And the stained area is completely gone.

Marble floor stain removal

Very happy with this job!

The second person was an electrician, the same one we had install new ceiling lights for us a while back. We had been thinking about other jobs that we could get done, and my wife suggested getting some downlights installed in the kitchen, over the bench that sits in the cutaway section opposite the cooktop.

Kitchen before new downlights

In this view you can see the sink against the window wall. The cooktop is on the left side, just left of the knife rack. Opposite that is another bench, extending perpendicular to the wall, to the pillar you can see at far left of the photo. We often prepare things on this bench, and early on we recognised the need for more light here. So I installed a cheap fluorescent tube on the wall, which you can see above the microwave, with an ugly cord dangling down at an angle to the power strip on top of the microwave. It’s an ugly solution, but we’ve lived with it for years.

But my wife suggested we could get rid of it and install some downlights above the bench, maybe three running in a line inside the edge of the false ceiling that you can see above the kitchen. I informed the electrician what we wanted, and he said he could wire them to the same switch circuit as the main kitchen light. But we wanted them independently switched, so we could have them on or off separately from the existing kitchen light. He said he wasn’t sure if that would be possible until he arrived and had a look at the wiring.

When he got here this morning, he was skeptical at first. I wanted a new light switch in the place where our old copper telephone cable comes out of the wall, which is on that pillar at the far left – a convenient place for the downlight switch. I thought he might be able to run a new power cable up from there to the false ceiling cavity and do all the necessary wiring that way. But he said that he needed to tie it in to an existing light power circuit, and the only one suitable was the main kitchen light, which is switched from another switch on the opposite side of the kitchen entrance. Okay… but when he opened up that switch and looked at the wiring, he lamented that it appeared to have been run through the brickwork and concrete directly, without a conduit, which meant it might not be possible to pull a new wire through.

He aid he could try pulling the existing kitchen light wire through, tied to a leader cable, and then pull the cable back with two wires, and add the downlights to an extra switch on a new wall plate. But he said that if the cable was tightly restricted by the bricks and concrete, he might not be able to pull the new wires through, so there was a risk that we’d lose the cabling for the original kitchen light! I asked him to estimate the chances of that, and he said he could give the first step a try and if things felt like getting stuck he could try backing it out, and he felt that was low risk. So I said go ahead. Thankfully he managed to get the whole process done, although there was a tense moment when he was trying to pull the two new cables back through.

Here’s the installation of the new lights in progress:

New kitchen downlights

You can see two installed, and the third with a wire dangling out, and also wires dangling out the hole where the original main light was installed. And here is the finished job, with the original light and three new downlights all on.

New kitchen downlights

This view also gives you a much better view of the kitchen layout than the first photo above. After taking this photo I removed the old fluoro tube from the wall, which now looks much cleaner.

While the tradies were working on the bathroom floor and kitchen lights, I worked on writing my class for the next week of critical/ethical thinking. This week’s topic is The Generation Gap. It should be very interesting, asking kids to imagine thinking like adults and to discuss why people of different ages sometimes don’t understand one another.

Even though I didn’t do most of the hard work, it felt like a very accomplished day!

Sizing up a new kitchen bin

This morning I did my usual four online classes, finishing off a week of talking about Boredom with kids. It was actually a really interesting topic, especially discussing potential links between boredom and the ability to let your mind wander and be creative. It was clear most of the kids had never considered that possibility before, and thought it was a fascinating thing to think about.

At lunch I walked Scully to my wife’s work, where she spent the rest of the afternoon. I ran a 5k route home for exercise, and managed a decent time.

In the afternoon I inspected the cabinet under our kitchen sink, measuring it up to find what size of waste bin would fit under there. I think I mentioned earlier that we’re planning to replace the free-standing bin on the kitchen floor with one tucked away under the sink. I searched online for kitchen bins to see what sizes are available. It was hard picking one though, so I think I’ll need to take the dimensions of the available space to the hardware store, pick a bin that fits, and then come home and rearrange things to make space for it. I’d planned to do the rearranging today to make space, but realised it’ll be better to do it once I know what size bin we have.

This evening I have a day off teaching at the university, because it’s student study vacation week. I’ll be back next week to help students with their image processing projects.

Oh, and last night I watched Insidious: The Red Door on Netflix. I’ve been watching this movie series, and also The Conjuring series, and I finally realised why I keep getting movies from the two series confused. Because Patrick Wilson plays a lead character in both series!! The whole time through the movie last night I was getting vague feelings that this guy belonged somewhere else, not in this movie.

Cleaning the garage

This morning my wife suggested we go to a food and wine festival, which was being held at a suburb about 25 minutes drive away. Different parts of Sydney have various local festivals throughout the year, and spring is a favourite time for them. We got there early, just as it opened at 10:00, and it wasn’t too busy, which was good. It would have been crowded at lunch time.

There were food trucks and a couple of dozen stalls from different wineries showing off their wines and selling glasses and bottles, and several stalls with small businesses selling things like jars of jam, chilli sauces, sweets, nuts, etc. There were also some general market stalls selling handicrafts, clothes, plants, and so on. It wasn’t huge, and we walked around all the stalls in maybe half an hour. My wife got an açai bowl with fruit and grains. I considered getting some dumplings but the serving size was too large for a snack, and I didn’t feel like a full meal an hour before lunch time.

We came home via The Flour Shop, a bakery nearby which we’ve been to once before and it was awesome. It was again so today. I got a pastrami, jalapeño, and cheese pastry, which was delicious, and a coconut puff to take home for dessert tonight.

After getting home, I cleaned the garage. This is part of the overall ongoing spring cleaning leading up to the grand repainting of our home in October. We’ve been rearranging stuff and throwing things out and now we are moving some things into storage in the garage, so instead of just chucking it down there I thought we needed to clean it properly. I swept and vacuumed the garage floor, removing a layer of grimy black dust, then wiped down any horizontal surfaces on top of storage boxes and the steel cabinets we have in there, before throwing out some stuff and rearranging things to be neater and more compact.

It took about four hours of work overall, but now the garage is clean, as in not dusty, and also tidy. A tough job, well done. It was really dirty though, as I hadn’t given it a dusting for a few years. Real grime-under-the-fingernails dirty, requiring several hand-washings. And a lot of moisturiser afterwards to smooth the dried skin.

Gaming and sketching

Friday was planned to be me running my Star Wars roleplaying game one-shot adventure but I had to postpone it as previously mentioned. Instead we did a regular board games night. I offered to remain the host, but another friend volunteered his place so he could attend – he had to look after his kids, so couldn’t leave home, but he was fine to host board games. SO we had an extra player that way.

We played a new game for me: Bark Avenue. It’s a dog-walking game, played on a map of upper Manhattan, around Central Park. There is a deck of dogs, who live in various neighbourhoods and need different amounts of walking, come in three sizes (small, medium, and large dogs), walk at different speeds, and have different favourite activities (sniffing hydrants, playing ball, or splashing in water).

Bark Avenue

You need to pick up dogs, walk them around, perhaps picking up other dogs along the way, and then return them home after they’ve been walking for enough turns. Each dog walked is worth a varying amount of cash, plus you can get extra tips for taking a photo of the dog while out, letting it engage in its favourite activity, or making sure it poops. You have to be careful planning a walking route, because you need to pick up and drop off dogs in the right neighbourhoods, and various blocks have different activities available. Here’s a close-up of Darwin the beagle, showing the poop token to indicate it’s done its business.

Bark Avenue

It was pretty fun, though I came dead last! After that we played Codenames, and by that time we were done for the evening. Also on Friday I did the usual grocery shopping and teaching five online classes.

Today I made a Darths & Droids comic, and went for a 7.5k run. It was warm and sunny, not my favourite weather for running, but I managed it.

In the afternoon, my wife and I went for a walk over to Greenwich Hospital, to do some sketching of an old building there. Pallister House is an 1892 Late Victorian Filigree country home, which was later used as a girls school, then a girl’s orphanage, before finally becoming part of the hospital. When we got there, we found it very conveniently had several wicker chairs scattered around the area, so we grabbed two and set them up in front of the building to sketch it.

Pallister House, Greenwich Hospital

Later in the afternoon and into early evening, I started cleaning things up. We’re engaging in a huge spring clean prior to repainting the home in late October. We started weeks ahead because we have a lot we want to do. My wife has gone through a bunch of her stuff and cleaned it out, freeing up a stack of storage boxes, which I moved a lot of my Lego bricks into, which in turn freed up some plastic storage drawers. Into those went all of the tools from our under-the-skitchen-sink toolbox: screwdrivers, a hammer, spanners, hex keys, various plumbing tools and spare parts, screws and nails, tubes of glue and other stuff, and so on. The space freed up under the kitchen sink we’re planning to use for a new, smaller kitchen waste bin, to save space currently used by the large waste bin which stands on the kitchen floor. We still need to clean it out and rearrange things for optimal storage and then we’ll buy a new bin to fit the space.