Tumbler Upgrade

My tumbler works well for some blades and worse for others, and it works really well for removing scale from pieces with complicated gomtry. However, as I alluded to last time, I had several problems with the drum itself.

The first problem was the water tightness. Not only the lid was not properly watertight, but the sides were neither. I have used screws to secure three wooden planks inside to prevent the contents from simply sliding around the inside without tumbling. And the water was seeping around the screws too. I was able to make it watertight in the end, but it was still not ideal. Plus the inner wooden ribs got worn down a lot quicker than I thought they will, they impeded the contents probably a bit too much.

The second problem was the change of the tumbling medium. I found out that fine gravel with water works great for removing scale, fine sand with walnut shells for a nice satin finish, and walnut shells with ferrous oxide for an even nicer satin finish. However, getting all of the coarser medium out of the drum in order to be able to use a finer one has proven to be nigh impossible. I did not run into any quality problems due to this, given the limited amount of time I have used the tumbler so far, but it did worry me enough to actually postpone its use until I find a solution.

The main problem was finding some kind of receptacle with a screw-on lid of the right size. I was crawling the internet occasionally for months, I even recruited my mother to help me, but we found nothing. We found plenty of products of course, but there were not always measurements written near them and thus we could not order them. And when the measurements were written, they were always of the ronk size.

But the week before Christmas I got lucky and during shopping for groceries, I stumbled upon just the thing I needed. I bought six pieces without hesitation. And this week I took a break from making knives and I made six new tumbling drums. That way I can use six different tumbling mediums without having to worry about contamination.

I started by cutting a 38 cm piece of 100 mm plumbing pipe that remained surplus during house renovations. It is a bit discolored on the outside because it lay outdoors in the sun for a few years, but other than that it is completely fine.

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Second, I have marked and cut in half the receptacles.

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The receptacles were a teensy tiny bit too big and did not fit inside the pipe, but that was not a problem since they are made from PET which is thermoplastic. I have carefully heated the edges with my heat gun and they shrunk a little when cooling town. The edges are not very neat, but that is not a problem.

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Copious amounts of adhesive putty helped to seal both the bottom and the top of the receptacle into the pipes. This was actually the hardest work of all, the putty is a bugger to squeeze out of the tube. theoretically it cannot glue PE, PP, and PTFE, but I did glue PVC to PP with it and it held watertight and strong enough so PET to PVC should not be a problem either. Maybe it won’t be the strongest possible bond, but it should be strong for this application. It is strong enough for me to be able to screw the lid on very tight.

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To prevents the contents from sliding and force them to tumble I have decided to try a different approach, one that does not involve breaching the integrity of the pipe. I have cut three pieces of PVC vinyl flooring, also surplus from house renovations. On one side of those pieces, I have made four cuts and inserted the uncut end s into them as depicted.

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Duct tape helped to hold the pieces in place while I rolled them together and inserted them inside the pipe.

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And voilala (or somtin’)! The inside of the drum is not smooth and round anymore, so the contents should be forced to tumble.

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There were some bugs to figure out and correct. The lids were not perfectly watertight, but I was able to cut circular gaskets from some softer leftover PVC vinyl flooring that has solved that problem. I also had to increase the span between the bearings on the axel on which the drum spins, because I am an idiot and I did not measure it correctly and I made the drum too big.

Currently, it is spinning with fine gravel and a few uncleaned broken blades to see how it works. After twelve hours there were no major problems and it did make reasonable progress on removing the scale.

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One problem remains and I have yet to find a good solution to it. During tumbling, some bigger particles of the tumbling medium (a fine stone or a piece of walnut shell) do wander into the thread of the lid and make it difficult to open the drum afterward. I have tried a few things, but so far without success. But as long as the lids do not get stuck completely, it is a minor issue and I am sure I will find a solution eventually.

 

Merry Holymas

Merry whatever you celebrate. I personally would not mind a little war on Christmas, I hate the holiday and everything it officially stands for (hint- it does not stand for love and family, that is most people’s personal addition). But I love the winter solstice and the promise of longer days and shorter nights again. We had an extremely warm bud muddy and gloomy fall so far, but today, finally, winter has begun for real – we had our first real snowfall of this year.  That has cheered me up ever so slightly.

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I might have to dust off the snow of the bonsai trees, if it gets wet, it could break them.

So, Howsda Brexit Goin’?

The UK is supposed to leave the EU finally and definitively at the end of this year and as each week some deadline is being set only to be ignored/postponed again, it is like watching a train wreck in slow motion. I will not pretend to be very well informed on the negotiations and everything with them, but I would like to shortly muse about one phenomenon that I see online.

Before and after the vote for Brexit, the Brexiteers with Farage, Rees-Mogg, Johnson and similar upper-class twits were all saying how easy it will be to close a comprehensive trade deal with EU and how after being freed from the EU restrictions they will be able to also negotiate much, much, much better deals with everyone else. After all, the UK is the fifth-largest economy in the world and the EU needs the UK much more than vice versa, so negotiations will be easy because the UK holds the longer end of the stick, etc. And even if no-deal happens, no biggie, cuz everyone else will clamor to fill the gap in business with the EU.

So far the UK has closed several trade deals with other countries, and most of them are just copy-pasted trade deals that those countries have with the EU. The trade deal with Japan is worse (for the UK) than the one the EU has. And the trade deal with the EU does not go so well so far. In fact, it seems that hard Brexit is creeping ever closer.

And the rhetoric of online brexiteer experts is suddenly concentrated on how the EU bullies the UK and tries to punish it for leaving. The EU is the bad guy, of course, refusing to back down and give the UK everything it wants. To which I would say – so what?

Those brexiteers who will inevitably blame the EU for any negatives that befall the UK due to this mess seem to me to fail to grasp a blatant contradiction in their own reasoning. Not only in claiming that the UK is bullied by someone who, supposedly, was supposed to have a weaker negotiating position. But also they are often hardline libertarian capitalists, for whom negotiating from the position of power with the intent of screwing the other party completely over is a good thing. So by their own logic, even if the EU is the bully (which I do not think it is) and is just trying to screw the UK over to teach it a lesson (which I do not think it is) they should just admire the business acumen and negotiating strength of the EU instead of whining how persecuted they are, shouldn’t they?

It looks like the British Brexiteers do show here one common characteristic of conservatives the world over. They fire the sweepers, then the drop banana peels on the floor willy-nilly and when they inevitably slip and fall flat on their arse, they blame everyone else.

Kestrel Whoosh

Yesterday evening I heard a banshee wailing behind my window. Well, not being superstitious and knowing my birds I feared not for I knew it was no banshee but a kestrel. The little bugger has probably slept somewhere in my roof beams and decided to give me a loud “good night” just before sundown. In the morning, shortly after I woke up, I heard it again, so I put on a jacket and went out to take a look. And I saw the bird whooshing over the roof, confirming my surmise. I do not know exactly where it was overnight, but it was indeed somewhere near my window.

Later on, just as I was preparing to go pick up my mother at a hospital after successful surgery, I spotted the bird on a tree in my neighbor’s garden and I have managed to make a few pictures before it whooshed again. I even managed to open the window, although it did not help too much, the weather was foggy and the lighting was craparooni.

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More pictures below the fold.

[Read more…]

Kitchen Knives Set – Part 2: Making the Blades

There are multiple pictures, so I am putting the post below the fold. I have filmed most of these works, but if a video ever comes out, it won’t be this year. I am already getting a bit sidetracked by making this project more elaborate than I originally intended and by my desire to re-build and improve some of my tools. Whilst being hampered in my endeavors by cold weather and other, previously mentioned, things.

[Read more…]

Gingerbread Houses

My mom almost did not bake any gingerbread this year, she is not doing very well I am afraid. And I am trying to make knives when I have time and stamina, so I probably won’t bake any. But my mom did make two houses in the end, so here they are (below the fold). She loves doing these things and I am glad I invested money when I had it into automated devices that take care of the most laborious and heavy work so she can do it even now.

She complained a lot that her hands are getting shaky and the decorating is not as neat as it used to be, but she does that for several years now. I still think she makes beautiful, original, and wholesome gingerbread decorations and I keep telling her.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

[Read more…]

Bullfinches!

We have no snow yet, but the temps are below 0 °C sometimes, so we are filling the feeder with sunflower seeds. And at least bullfinches are here again, I had four pairs show up simultaneously this week, although I did not, unfortunately, get them all in one picture. I got seven individuals at once, but unfortunately, the focus was not on the tree with birds but on the tree behind them.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

TNET 43: Chess Anyone?

I did not know that there was an Online Olympiad for People with Disabilities, but I think it is a good idea.

The chess community has a long and unpleasant history of sexism and elitism, so it is good to see that the problems are being recognized by the current top chess brass and some progress towards the sport being more inclusive is being made.

I have learned to play chess at the age of five before I learned to read. I have always thought that I am no good at it because I was mostly playing with my father and my brother, neither of whom I could defeat with any reasonable frequency. I still could not beat my brother well into my thirties. That did discourage me a lot, especially since my brother – who was a competitive player, albeit not a top one – remarked often “OOH, you are starting with Italian today”. This always irritated me because I was never able to remember the names of beginnings, except those where the name was logically bound to the position on the board (like King’s Gambit, Four Knights). My memory does not work that way, rote memorization was always nigh impossible for me.

Anyhoo, in the spring of this year, I have created an account on www.chess.com and I started to play regularly. And since online gaming does match people with opponents of approximately the same strength, I am not losing all the time. And I have found out two things. First – I am definitively not at a competitive level, no surprise there. Second – I have Dunning-Kruegered myself, I am not as bad as I thought – I am in the top quintile, so I could probably win four out of five matches with random casual players.

If anyone is interested in chess and would like to play, let me know.

Open thread, talk whatever you want, but assholery is not allowed.

Previous thread.

Kitchen Knives Set – Part 1: Thoughts and Design

So, this is my next big-ish project, I have decided to make a basic set of kitchen knives – three knives and honing steel. I am not entirely sure about how useful honing steel is with knives from N690, but I have used it on my mother’s knives and it seems to work. It does not appear to hurt. If this small set works out OK, I will make more in the future and perhaps add some specialized knives along the way, but this basic set is meant for casual cooks like myself (and indeed most of my friends), who do not need a special blade for every task and will be probably very content with one knife for 90% of work.

And because this time I am preparing perhaps for more future projects, I have made templates in photoshop, printed them out, and laminated them in transparent foil for future use.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

The grid is metric, with the smallest scale being 1 mm.

The “meat” knife is a de-facto universal knife, one that I expect to take care of that 90% of work. Medium-sized blade with a round tip, ergonomic handle for firm grip, suitable for slicing protein as well as fine-dicing herbs and vegetables. And for remaining tasks, there is a small peeling knife with a sharp tip for piercing and a relatively straight blade for scratching-peeling, and a big chef knife for tackling difficult cabbage and for those occasions when cutting a lot of big-ish vegetables or huge chunks of whatever is necessary.

The chef knife has holes along the blade edge, which should help with reducing the sticking of whatever is being cut to the blade. It is easier to make than hollow grind or S-grind and it does work too. The handle is ergonomic as well but it is formed with a focus on two main uses of such a big blade. The thicker butt with a hook end prevents the knife from flying out of the hand when chopping, and the thin front with a lot of space for fingers allows for a choked-up grip with the index finger and thumb on the blade for fine slicing and dicing with a rocking motion.

All these designs should work as expected since they are based on knives that I have already made in the past. Of these, the least tested is the chef knife, but I still do not expect any trouble. I won’t follow the designs exactly, they are just approximations and I expect to tune them up a bit during the work. Any thoughts and remarks on the designs are welcome, as well as any suggestions for further additions to the set ( I am thinking about fish-knife and cheese-knife).

However, I will definitively introduce one new and relatively original feature right now. One that I have not seen used by another knifemaker (which does not mean nobody does it, I just did not see it done). As you can see, there are four-five holes for pins in each tang, which might seem a bit excessive and dorky-looking. That is because I need more pins – two will be wooden and two will be metallic. And they will not be visible. That is, the knives are designed as full-width tang, but the pins won’t appear on the outside of the handles. I have tested this idea on one broken blade and it seems to work perfectly OK for a kitchen knife that won’t get hit with a mallet or hammer too much. Or at all, as things should be.

So stay tuned for the following articles with a full write-up of my manufacturing process for this project. I am decently far already given that I only could work three days this week. And because a video was requested, I am filming (almost) all work as well. But I make no promises there – a future video is, at this time, uncertain and might or might not happen.

Loser Should Not Be an Insult

This will be just a short contemplation about one word. But before you proceed with reading, I would recommend watching this video. It is only tangentially related, but it sparked a few months ago the train of thoughts leading here.

English is not my first language and I have always trouble to understand some things. And one of those things is the use of the word loser as an insult. But it got appropriated into the Czech language in the late decades, and given how it is used, I do consider its use as an insult to be a symptom of a toxic culture, even if not necessarily of toxic masculinity specifically. As a prime example of this, I would like to point out that it is one of the most favorite insults that Donald Trump likes to throw around at anyone he does not like – and now some people like to use that word as an insult against him. I do not.

Using the word loser as a derogatory term in this way signifies that losing at something (usually at finding a relationship and/or financial independence) is always a choice and personal failure as if we all have full control over everything. It also values zero-sum games over cooperation. It completely disregards the huge influence of chance in our lives. Plus we are often pressured by society to try to succeed at the arbitrary and sometimes downright daft things against our will – there are people who are happy to be single, women who do not want to have children, men who do not want a managerial career, etc. It divides people into winners and losers and only winners are worthy of consideration and empathy.

So before you, as an SJW, continue to use the word loser casually as an insult, perhaps consider why you are doing it and whether you are not inadvertently contributing to the things you intend to oppose. There are better insults for shitty people who chose to do shitty things.

 

Whinge, Knives, Whinge

It took me four months to finish the batch of knives that I started in July. I have documented every hour that I have worked on knives, and the results are not good. I have only managed to work about 20 hours a week. Plus some hours that I have not counted, like when I was making new tools, repairing or improving them, etc.

Please allow me to whine a bit about the causes of that.

I either have chronic fatigue or I am a chronic hypochondriac. I am reluctant to go to a physician right now, partly because of the ongoing pandemic and partly because of last year when after several months of pain, I never got a conclusive diagnosis – and the pain only subsided after a course of steroids that I got for a really bad but unrelated virus (possibly flu) that snuck up on me right before Covid hit Europe. So I am not all too optimistic about our GP being able to help me with this.

I have been more or less tired ever since that possible flu. You remember that short walk in the forest in August when I brought home two full shopping bags of ‘shrooms? It took me three days to get over that, and one of those days my legs hurt so much I was barely able to go to the loo. After just several hours of hand-sanding knife handles my back and hands hurt for two days. Etc. etc. ad nauseam. Add to that the necessity to spend time carting my parents to/from doctors, stacking firewood to the cellar, caring for my trees, and the result is that I do a lot less work than I want to.

I have never seen the point of exercise because my body never reacted to it the way other people’s bodies seem to. I did get stronger, but only in relation to my starting point. In high school, when I could exercise under professional supervision free of charge, after months of work I was barely getting just below the level where my schoolmates have started. This year is that – only worse. I am not going exactly downhill, but just barely. Plus my hands started to hurt again two weeks ago. With the sun gone, I have at least looked at what safe dose of Vitamin D I can take in supplements and I am taking that because it seems to help a bit.

Whining over. I hope it gets better. At least it is not getting worse.

The last knives I have finished are four universal kitchen knives from a batch of five blades. One of those blades was not suitably hardened after all- near the tang was about 2 cm soft part. I do not need to toss it, but I do need to try and quench it again with the next project.

These are a bit heavier and thicker (3mm) than my previous knives of this type because they are made from what was left over from the slabs for chef knives. I have also changed the geometry of the handle a bit – instead of a rounded rectangular profile it has a rounded trapezoid profile. They are also about 2-4 mm thinner overall and 5 mm thinner and shorter at the front to better allow a choked-up grip with thumb and index finger on the blade. And they are pointy this time.

One knife has the handle from apricot wood and I have tried tubular pins filled with the same wood. I think it looks good and I will use that idea in the future again.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

Two knives have the handles from pickled black locust. It is perfidious wood, in the future, I have to be more careful – the scales were probably not fully dried when I ground them to final size and they shrunk on me a tiny bit when I was finishing the surface with resin. So the tang does exceed the handles a tiny bit. That can happen due to a bad shaping job too, but that was not this case – they were perfectly flush originally, I swear. Lesson learned I have to put this wood in the oven for an hour or so before glue-up and grinding the outline. Now I can forget the lesson before finishing the next batch.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

And last was fitted with padauk wood that I have again got for free with steel shipment. A prime example that there really is no need to use tropical woods, it does not look that much better than the black locust.

© Charly, all rights reserved. Click for full size.

© Charly, all rights reserved. Click for full size.

Knives are a bugger to shoot, I will have to build myself some better lighting system. Either the blade is over-exposed, or the handle is under-exposed, or the colors are off, or all three.

If you are interested in knife making, on Sunday I will start a detailed series about my next knife-making project. Not because I am qualified, but because I want to.