Wulf's Webden

The Webden on WordPress

25 August 2026
by wpAdmin
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Smooth Shapes

This evening I’ve been working on some 3D design where I’m trying to create a moderately complex shape with a degree of rounding. I already had the basic design worked out in Inkscape but, if you simply import an SVG image into OpenSCAD, you can’t apply any profile to the top and bottom edges. For that you need the shape expressed as a path.

I spent some time looking into a library called PathBuilder. I figured out how to extract the path details from an SVG file and load them up as a shape but got stuck on converting the file into a valid path that I could use tools like BOSL2’s offset_sweep on. In other words, after a long period of messing around, I wasn’t really any further forward than just importing the SVG.

In the end, I turned to “turtle” graphics to work out my path. For what I did, I probably would have been better off just manually setting up the points but the turtle approach would allow me more control over creating more complex shapes like arcs rather than just jumping through a series of [x,y] points. Anyway, job done… I think. I’ll let the test piece finish off overnight and then I can test it in the morning.

24 August 2026
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Kale Crisps

One of the recipes that caught my eye in Jamie Oliver’s Easy Air Fryer book was Kale Crisps. I tried them yesterday and they were a bit overdone but I’ve dialled things down a bit and here is what I’ve ended up with.

I started with a pre-chopped bag of kale from Lidl (my current batch of allotment kale is still much too small to harvest), extracted a portion to a bowl and removed the larger bits of stalk. I then dropped in a generous pinch of sea salt and a dash or two of olive oil, which I rubbed into the leaves. That then got cooked for four minutes in the air fryer at 175°C, given a good shake and then cooked for the same period again. The result was spot on – green, crispy and an excellent garnish for tonight’s meal (chilli con carne).

The original recipe was 10 minutes in total at 200°C with a shake halfway through. Larger pieces might have coped with that but, for the pickings from a supermarket bag, taking it down a bit turned out perfectly.

23 August 2026
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Ephesians in 3 Words

I was helping with the music at a different church this morning so wasn’t able to attend the “community Sunday” service at Hathern Baptist but I did prepare a couple of video contributions. Apparently the second one didn’t load properly so I’ve put it on my YouTube channel for those who wanted to know what it contained:

It is only 2.5 minutes long but that was all I needed to share my favourite summary of Paul’s letter to the Ephesians, based on a classic book by Watchman Nee. Six chapters of the Bible boiled down to three words, which neatly encapsulate the message of the letter.

22 August 2026
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Plastic Beer

This evening I picked up an “XXL” pack of Perlenbacher Gold beer from Lidl. It was only on getting it home and deciding to try one that I realised the bottles were plastic rather than glass. I would imagine that is quite a weight saving, leading to a shipping cost saving and thence contributing to low cost. I paid £9.99 for 9 bottles, so not much over a quid for 500ml of beer.

It must be one of the cheapest beers on the UK market but what is it like? Although it claims to have been brewed according to German beer purity laws, I did find it had a bit of artificial taste. It reminded me of cheap canned lager, so I don’t think it is the result of the plastic bottle but just mass produced beer produced to hit a low cost point. It isn’t quite down to the level of beer that I’ve bought in the past specifically to make slug traps but it would do best served cold on a hot day and I think I prefer their (even cheaper) Perlenbacher Zero (6 x 330ml cans for £2.99).

I’ll have to try both side by side but not this evening.

21 August 2026
by wpAdmin
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Two Toads in Two Holes?

This evening, I decided to try toad in the hole (sausages cooked in batter) in the air fryer. In theory, I could have cooked it directly in the basket but it would potentially be hard to lift out and clean up without scratching the surface and the hot air would only be coming from on top. Instead, I decided to use a couple of oval ceramic dishes although that meant I had to use both drawers.

Overall it was pretty quick and easy – about 7 minutes in total to get the sausages (chopped into sections) browned and then another 12 minutes to cook the batter. The sausages could probably have done with a few minutes on a lower heat to start rendering the fat and then a couple more minutes on a higher setting to finish off. Likewise the batter stage might have benefited from either a lower start or being covered with foil for the first stage. At the end, the top was a bit overdone while lower down was cooked but the sausages looked a bit anaemic in parts. However, the speed was good, it was quicker than using an oven and the results were amply tasty.

The other challenge was that our trays, which allow air to circulate all round the cooking food, have raised bits in the middle. That makes them easier to lift out but is a pain to balance hard bottomed cooking vessels on. I wonder if I ought to try and find something like some silicone disks to act as non-slip feet and raise them up the small distance needed? Unfortunately that isn’t a job for my 3D printer as I can’t work with materials that have enough heat resistance for the inside of an air fryer but it does look like there are some options available to purchase. I’ll keep my eyes open for a few days first though in case I’ve got anything already in my possession which might do the job.

20 August 2026
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That Sucks?

A little while ago, I purchased a handheld airblower. It is the kind of thing often used for dusting electronics and I preferred the idea of a rechargeable one as opposed to the aerosol type. I think it will be more sustainable and the aerosol models can sometimes spit condensed liquid onto your devices!

It has been great but then I recently discovered another use for it. It blows air out of the nozzle at the front but that means it sucks air in from the inlet at the back. There is a model on Printables that creates an additional nozzle so you can get a reasonable vacuum seal on things like filament storage bags. It won’t be as good as a dedicated vacuum pump but it works pretty well.

I also want to use it in the kitchen so I’ve designed and printed my own extension piece. This makes the nozzle about twice as long and also adds a mesh at the end. That allows it to be poked into bags more easily and gives some protection against sucking up unwanted contaminants into the blower. I haven’t decided whether to publish my design yet in case it does cause problems but I’ll consider it after more testing.

The new design trick for me was using a part set to have no top or bottom surfaces, which I added in the slicer rather than in building the base model. That means I didn’t have to design a fine mesh and hope it printed okay but, instead, I’m simply exposing the infill (for which I selected a simple grid).

19 August 2026
by wpAdmin
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Feeling the Heat

We like to keep a few sweets in the car for long journeys – normally fruit pastilles but occasionally we’ll have something like jelly babies in our second (long-reused) boiled sweets tin. That was okay for our trip to Keswick but I think the extreme temperatures at the end of last week were too much and several of them had melted together when I checked the tin over the weekend.

I don’t know how hot it got in the glove compartment last Thursday and Friday but I’ll have to remember to go back to less melty sweets, like mint imperials, next time we get a burst of heat.

18 August 2026
by wpAdmin
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Pictures First

My general web design methodology has been to develop my ideas with a bit of scribbling on paper, then to build a functional (but probably fairly ugly version) with clean HTML and then to add the styling later to make it pretty as well. I’ve been reconsidering that recently for some of the work projects I’ve been doing. There are several large sites, each with a strong visual identity and I’m working remotely from my colleagues rather than having them in the same building.

The solution I’ve been trying is what I’ve been calling wire-framing although what I’m building is more like facades or “studio flats”. With web developer tools I can manipulate a loaded web page, replacing whole blocks at a time. If I work out the area I need to change, I can pull copies of that code into one or more text files and copy and paste it back in to create the illusion of what I’m after. It helps me develop the ideas within the existing design concept of the site and I can then produce a series of screenshots to share with colleagues.

In turn, that becomes material for further discussions. My colleagues can see what I have in mind and might suggest changes. Sometimes I even find things myself (“aha! I need a button to add a new entry to that table”). Those changes can be quickly implemented to produce another set of mock-ups but, at no point, is there any risk of me breaking the actual website.

I’ve got a couple of such projects that are now almost ready to turn into actual code. It’s possible I might be able to feed the images directly to Cursor, the AI assistant I am using. Even if it can’t grok those, I’ll certainly have a head start on writing detailed and clear prompts so that the system can suggest the necessary updates and, after review, be set to implement them.

So, for some cases, pictures first or perhaps even “fake it until you make it”!

17 August 2026
by wpAdmin
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A Few Drops

I was quite excited earlier when a few heavy drops of water (what we were once familiar with as “rain”) started to fall from the sky. It was enough to have me rushing out to grab in the washing, which was bone-dry after a few hours on the line.

Sadly, the precipitation didn’t persist. Hopefully the promise of 90% chance of decently heavy overnight rain will prove good and then tomorrow morning’s allotment trip can be focused on harvesting (raspberries, blackberries, french beans and courgettes all ready) rather than watering.

16 August 2026
by wpAdmin
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Size Limits

There are definitely limits to what can be cooked in an air fryer drawer. One consequence of getting near the limit is that cooking seems to go slower. Today I tried another Jamie Oliver recipe, for stuffed chicken breasts wrapped in puff pastry. The result was delicious but I needed to give them another five minutes (+25%) on the time as well as turning them. Together they pretty much filled the space across the bottom of the drawer and I think that probably increased the cooking time. With the extra time, my temperature probe showed that they were done and so I could move onto dishing up, along with the roast carrots from the other drawer (delicious, no problems and vaguely adapted from an accompaniment to another dish in the same book).

Perhaps I should have weighed them to see how they compared to the specified size. Once solution would have been to trim them down to make smaller but more even parcels. I could easily have used the trimmings elsewhere and that would also have produced a neater pair of packages for the plates. They still tasted good though and, perhaps benefiting from their pastry wrapping and the filling, were wonderfully succulent. That’s a few more points in favour of the easy air fryer book even if the cooking always involves a fair degree of judgement.