Making a Rondel Dagger – Interlude

The now finished blade came out really nicely, so I will not be ashamed to be associated with it. So I will definitively sign it. However I mentioned already that I do not currently have my own maker’s mark, since the one I used from 10 years age is now used as bluetooth logo. I am not sure whether continuing to use it could lead to legal trouble, but I guess it would lead to confusion. “That knife has a bluetooth? What does it do?”.

I tried to design a new logo, but all designs I came up with either do not appeal to me, or they require quite precise etching process to be made on a blade. And that would definitively not fit this blade, where I aim for as authentic medieval look as I can achieve.

An idea came to me to use my initials, but not in Latin script, but in Glagolitic. At least for this particular dagger. It has the advantage that not only is it a very simple design, it is also thematic – Glagolitic script is the official script of the Witcher 3 game from which the inspiration for the dagger originated. And I am not appropriating other people’s culture.

So today I set out to try how it looks and also to refine/remember my etching process, since I did not do it for quite a long time. For that I yesterday polished a piece of steel from my failed broken machete.

In the past I tried different materials as masking for etching and the best results I have got with material that does not look appealing in the least. But do not worry, it does not smell like what it looks like. It smells actually very nice when worked, because it has been made from equal parts of beeswax, bitumen and spruce resin, all boiled together and poured into water to solidify. I formed it in sticks and for last ten years it collected dust. But it does not spoil and it is just as usable as it was when new.

When heated with heat gun or even with hair dryer or a candle it quickly gets very sticky and adheres to the de-greased steel quite well. So I heat gently both the steel and the stick and rub them together to transfer some of the sticky material onto the blade. Then I use the air flow from the hot air gun to make an even thin layer. It is important for the layer not to be too thick, because it would be difficult to draw the design in it, but also not too thin because then it could delaminate during etching around the edges (delamination was a huge problem when I was trying to use paraffine btw.).

Next step is to draw the design. The layer remains fairly soft and plastic for long time and can be easily scratched through. For this I am using an old compass needle, but for finer design a razor blade or very sharp wood carving knife tip can also be used. It is important to keep the needle clean after every scratch, since the stuff adheres to it too. It is also necessary not only to scratch through, but more like scratch/chisel away. Minor mistakes can be repaired by pressing a piece of the mass on desired place and pressing it gently against the spot until it connects again. After just a few minutes of work under a magnifying glass I was ready to try etching.

For just a small logo I did not want to prepare whole big etching bath, so I used the masking mass to glue a bottle cap with cut-out top as a barrier for the etching fluid to remain in place. As a source of electrical current I have used a DC power supply from an external hard drive that has died on me a few years ago – it has an on/off switch which comes in handy. Anode (+) is connected on the steel and cathode (-) on a piece of graphite (a pencil core works too and I used it for very fine etchings in the past). As etching fluid I have used ordinary kitchen salt solution in the past, but today I have tried ferric chloride because I reasoned (correctly) that it will work better. It is solution for etching printed circuit boards diluted approximately 1:10.

It is important to not use too concentrated solution for two main reasons:

  1. The current that can go through the solution depends on concentration. Too high concentration can mean too high current and that can burn the DC power supply (lesson learned in the past).
  2. Too concentrated solution also etches too quickly and that is not desirable because it makes uneven “burned” looking and spotty etch.

After that I turned the switch on and waited for ten minutes. It was not complete success because towards the end the bath evaporated too much, it got warm and the masking layer delaminated around the whole logo. So I repeated the process once more with only five minutes etching time. I am satisfied with the result, the etching is clear and has nice black color that I know I would not get with table salt. Now I will play with the letters a bit in Photoshop to get the proportions right.

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Anatomy Atlas Part 11 – Guts

Guts. The tubes that transform delicious food into disgusting shit. Which, in turn, is delicious food to other creatures who turn it into even smaller shit. And so on until it is all recycled back into living tissue or fossilized. In nature as a whole there is no such thing as waste and if something can be digested and turned into energy to sustain life, sooner or later there will be an organism doing just that.

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The interesting story about guts that our esteemed Professor Kos told was quite literally about shit.

Our digestive system is not particularly effective in absorbing fats, a significant portion of excrement are lipid compounds. And this, indirectly, is responsible for the oh so typical color of the final product of human digestive system.

When red blood cells die, the heme has to be broken down in order for the iron to be re-absorbed and recycled. Some of the end products of heme recycling are two chemicals: one called bilirubin (yellow), which gets later on broken down into stercobilin (brown). This is the reason why bruises go from initially red through blue to yellow and brown color as they heal.

The same process is happening also in liver and the chemicals bilirubin and stercobilin are excreted with bile. And because they are not water-soluble but are fat-soluble, they remain in the undigested fat in feces and are responsible for their distinctive color.

Behind the Iron Curtain part 10 – Sex Ed

These are my recollections of a life behind the iron curtain. I do not aim to give perfect and objective evaluation of anything, but to share my personal experiences and memories. It will explain why I just cannot get misty eyed over some ideas on the political left and why I loathe many ideas on the right.


This is another one of the issues where the current US divide between left and right amuses me greatly. If you ever saw the movie “Red Heat” you will probably remember Arnold Schwarzenegger in his role as a Soviet agent turning on TV in a cheap American hotel and upon seeing porn uttering the word “Capitalism!” with utmost sneer in his voice. That scene rings so true to me.

The regime’s attitude to sex and sex education was abysmal. You see, sex is pleasurable to the individual, and as such informing the populace about how it is supposed to work could not be easily spun into a way to advance the greater good. Pornography was illegal and erotica very strictly regulated. And sex education almost non-existent.

Well, that is not entirely true. Sex ed was compulsory. But non-existent at the same time.

In the seventh class of elementary school, the biology classes were focused on human anatomy. Towards the end of the year part of the curriculum was about sexual and reproductive organs and some sex education thrown in.

The sex education part was gender segregated. Girls were shown some educational video whose details I do not know. Some boys tried to listen at the windows and from them I know that it probably consisted mostly of information about expected changes in body chemistry and shape during puberty, and nothing more.

Boys had even less informative session, which I missed completely due to illness. All I know from highly bemused accounts from my schoolmates is that instead of the rather good diagrams in books the whole issue was explained on a picture of a tulip. Really. Bees and flowers. At school. In 1980s.

At no point whatsoever were the “technicalities” of sex mentioned. No mention of consent and how it is supposed to work, no mention about how condoms are used and what other options of contraception there are, no mention of how the body parts actually fit into each other. So all of this info had to be learned from surroundings, either from family members or from peers. Which has of course led to great variation between individuals.

Info about consent came mostly from media and from peers, with all the masculine garbage that is the stupid “yes means yes, no means try harder”.
Use of condoms had everybody to gleam from rare articles that might be written in some magazine for adults or to figure out for themselves. Oh, and the stupid “it’s woman’s responsibility to not get pregnant” was part of the package too.

How the sex itself is supposed to work everybody learned from pornographic magazines smuggled in from west. People who did not get lucky to see porn or grow up in the country  might end up completely unable to actually perform sexual act properly, as was attested in the book Lidská sexualita (Human sexuality) by sexuologist Ivo Pondělíček and his wife Jaroslava Pondělíčková-Mašlová, who bemoaned that in the 1970’s multiple adult pairs came through his office who were unable to conceive child and during the courses he learned that they did not even know that for a woman to conceive the penis must enter the vagina. At least one such pair were people with university diplomas.

All in all it is no wonder that in my relatively small social circle I knew two girls who became pregnant shortly after the age of consent (15 years) and that it was all too common that girls got pregnant and married quite young. There are no precise statistics, because the regime did not keep tabs on things that reflected on it unfavourably, but I would not be suprised if today’s Texas came out better in this regard.

White

One of our cacti has blossomed this year, one whose blossoms open only for one night. So I had to take the picture in late evening sun.

And as I was walking from the glasshouse, I took a shot of the elderberry too.

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

Anatomy Atlas Part 10 – Sinuses

The nasal and paranasal cavities. The source of joy for so many people around the world, and yet another proof of the intelligent design ad hoc nature of evolution.

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I always have had hayfever throughout the year. Once when my GP asked my at what time of year I have the most problems my reply was “Well, it usually is the worst from January til December.”. That was a rare occasion, because he does not laugh often.

But despite constantly runny nose alternately either due to cold or due to allergy, I never had serious problems with sinuses. Until last two years. Maybe the subtle changes in bone structures due to aging came over some tipping point.

What I remember from school about this predicament is that our upright posture is responsible for most of it. The sinuses evolved in quadrupeds and they use gravity for draining the phlegm. Evolution has tried to keep up with our evolving of upright posture and flat face, but did not manage it well enough. Thus our species is blessed with the ability to flip from just annoyingly runy nose to headsplitting ache overnight.

As I said at the beginning. Oh the joy.

Making a Rondel Dagger – Part 8 – Buffing

After many hours and a few more due to setbacks (scratches, aaaargh) I finally got to the point where the blade was polished with the 7.000 grit paper. This is very fine mirror polish, but it looks a bit, well, strange, unnatural and artificial. There are different options for how to deal with this and I decided to go for buffing.

Buffing is an abrasive process that uses some very fine polishing compounds on some soft carrier (cloth, felt, paper, leather – all are usable and all have their advantages and disadvantages). In this case I have first used very fine commercial polishing compound applied to a felt wheel. Since I do not have space for a set of specialized buffers in my workshop, I have to do with a drill held firmly in a vice.

Buffing a blade on a wheel can be dangerous process, I think more dangerous than grinding. The main thing to keep in mind in this regard  is that the cutting edge orientation must be opposite to how it is held during sharpening – that is, the edge should point in the direction of the movement, not against it. Forgetting this is very, very dangerous, since the blade can bite in the soft wheel in an instant and be hurled in random direction with great force. A care has also to be taken near any and all edges.

Buffing with the commercial compound has produced very fine finish very quickly, but I was still not satisfied with it. It looked too artificial, machine-made. Luckily enough there is an even finer abrasive at hand – jeweler’s rouge. Nowadays I could buy half a kilo of ferrous oxide for mere 2,-€ (with 4,-€ shipment, ha!), but since I have no shortage of steel dust and rusting iron, I am making my own with a process that I devised when buying stuff online was not yet a thing. Not to save money (it is actually the exact opposite), but for fun. I have used all I had yonks ago, but I have just finished making a small batch from the steel dust ground from my previous dagger and it came handy this time.

I do not have a separate buffing wheel for jewelers rouge yet. So I lightly dusted a piece of cloth from an old t-shirt soaked in WD-40. Emphasis on the word “lightly”. Jewelers rouge is very mild abrasive and if it is clean enough, it will not scratch the blade too badly even if not too precisely ground and sieved. But it is good to use the cloth as a sort of final sieve and work the abrasive slowly through the cloth to the blade, and not apply it directly on it.

Theoretically this buffing can be done at home while watching a movie, because it takes a looong time and is boring as hell, but if you do that, you have to be careful. Do not be tempted to scratch your nose or touch anything, that stuff is vicious. It is not dangerous, but the very fine red dust is very strong and vivid pigment and unless you are extremely careful, it gets everywhere and you will have pink fingerprints on everything you touch. Pink switches, pink door handles and definitively pink soap bar. Oh, and if you forget to wear respirator whilst grinding the stuff and sifting, pink bogeys.

I have spent approximately two hours running the oil soaked red rug along the blade and the blade is finally and definitively done to my satisfaction. Next step is to find materials for the guard, bolster and rondel. And a fitting piece of wood for the handle.

Behind the Iron Curtain part 9 – Shops and Services

These are my recollections of a life behind the iron curtain. I do not aim to give perfect and objective evaluation of anything, but to share my personal experiences and memories. It will explain why I just cannot get misty eyed over some ideas on the political left and why I loathe many ideas on the right.


After the WW2 the regime, under the lead of Stalin, had no thought of anything other than preparing for WW3. So after communists took power in a de-facto putsch in 1948, they invested all effort into re-building heavy industries and nothing else. And, at direct order from Stalin, the Czechoslovak Socialist Republic refused any offers of help from USA and their western allies.

This was, as many other things, idiocy of first water. The economy as a whole was doing relatively well, with people being employed in the heavy industries. The main support of the communist party, the labourers, were making good money. The problem was they had nothing to spend it on. There was barely enough food to buy and nearly no luxury or comfort items, because light industries were deemed secondary and therefore not important and no effort was made to restore them after the war. And the iron curtain prevented importing goods in any meaningful amounts.

But people do not work like that, they want not only to barely survive on bread and water, they want savoury things, shiny things and pretty things too. Just feeding them enough so they do not starve is not enough. Hard work has to be rewarded with something more tangible than a pat on the shoulder and a word about how you contribute to the common good.

The regimes way to deal with the situation was to artificially devaluate the currency and thus effectively steal people’s money in 1953. It was touted as a final blow to the exploiters, the last remaining self-employed artisans and land owners, but the hardest hit was on the labourers. Before they had money but nothing to spend them on, but they had a hope of spending it someday. Now they had nothing.

Riots ensued that were drowned in blood. The propaganda tried to spin those riots as a work of infiltrators and foreign agents provocateurs, but it did not work. The regime has lost the trust of its main supporting class – the labourers. And it never regained it.

In reaction to this, some effort was made to provide people with things they want. It was succesful enough to prevent further riots, but not enough to regain the trust of people.

At the time of my life the situation was not as dire as it was in the fifties, but it was still pretty glum. Buying something was very difficult, even if you had the money for it. Not only luxury items like colour TVs were difficult to obtain, but even many ordinary items, like materials to do house repairs. For cars there were waiting lists.

This has led to a few main things.

One day when I was visiting my aunt in Pilsen we went shopping in a big shopping center. A huge shopping mall with half-empty shelves that nevertheless to me seemed full because I knew nothing better. My aunt saw the shopkeeper to sell a lipstick to a woman who was apparently her acquaintance and she wanted to buy the lipstick too. The retailer told her there aren’t any, to which my aunt replied, rather angrily, “Do not lie to me, I saw you to put the whole box under the counter”. This was my first meeting the concept of “under the counter goods”. Those were items that were so rare, that shopkeepers actually kept them hidden from the general public in order to either keep them for themselves or for their closest friends. If one wanted bananas or oranges, without a relative in the shop it was difficult to get either.

At another time and place I was talking with a friend of mine from school about a little experiment I wanted to do and I sighed, “I need magnets, but no shop around here sells them.” to which his incredulous reply was “Why don’t you steal them simply from school?”. To which I, equally incredulously, replied “I do not need them as much as to steal them!”. This was my first encounter of the concept “who does not steal from the state, steals from their own family”. For honest people it was nigh impossible to obtain some even quite ordinary goods, because they either never reached the public counters or were quickly sold out when they did. So it was quite common thing to steal for example building materials from public spaces. Who did not steal, did not prosper. Part of the reason why our house fell in such serious disrepair was that my parents did not steal.∗

But not only goods were hard to come by. Labour was difficult to get too. Need a house repaired or built? You better had a friend who is a builder. Not only would he be able to steal the materials you need, but he might also be able to make a lot of the work at the time when he is supposed to work for his employer. This in combination with previously mentioned slacking has exacerbated the labour shortage that was an ever-present theme. “There is not enough people” was the commonest explanation for why nothing works as it should be and work does not get done on time. You need some minor house repairs? You better do them yourself. If you cannot do them yourself, you are in bad luck, because “There is not enough people”.

For those who had occasionally got their hands on foreign currency, like German Marks, or US Dollars, or special secondary currency called “Bony”, there were specialised shops called “Tuzex” where imported western goods could be bought. These were highly sought after and a sign of social status. Jeans and Lego for example could not be bought anywhere else. But the regime did its best to prevent ordinary people from getting their hands on these currencies, they were reserved for the elite. So of course black market emerged. The proprietors were called “Vekslák” (probably from german “wechseln” – exchange) and were the official villains for the regime, by encouraging people in the following their base instinct to follow their own good instead of sacrificing it on the altar of the common good.

The iron curtain in this regard demonstrated where extreme isolationism, protectionism and one-sided economy leads – corruption and criminality. A lesson worthy of remembering,  yet nobody seems to remember it.


∗ Since my mother was a head of local food shop and my father was a factory foreman, people had difficulty to believe that they did not use their positions to enrich herself. There were rumours about us only pretending to be poor and how we have a car hidden i the garden shed and loads of money stashed away. After the fall of the iron curtain my parents were frequently asked why they do not start their own business or invest money. Nobody believed them for years when they said that they are not rich.

But they did use their positions to get some advantage. We always had some of the scarce goods. One of such goods were canned tangerines, those were so rare that actual fights broke out when they got into the shop. So when we wanted to buy color TV, my mother bought a whole box of canned tangerines  in order to sell them to the electronics shop keeper in the district main town who in turn held the TV under the counter for a few weeks until my parents could organize transport.

I succumbed to the peer pressure and I stole a piece of steel from school when I first wanted to make a knife. The knife was never made, because I have hidden the steel bar in a drawer and never used it. It gnawed at my conscience. I failed to internalize the imperative “who does not steal from the state, steals from their own family”.

 

Advantages of an Unkempt Lawn

On a short mown lawn, boringly green,  you do not get to see these. The orange flowers are Hieracium aurantiacum, which is to my mind the most handsome dandelion relative growing here. It is also an endangered plant in CZ so we are mowing the lawn in a way as to allow them to flourish. There are only a few patches around where it prospers.

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