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[STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST)

(Update Feb 26th, 9:15pm AEST)

Just completed the upload on a new TGT, all about the foundry Pyrometer - As it happens, its a very awkward tool to shoot because its so long and thin. I just barely squeeze it into this shot even with the camera perched up on the ceiling :)

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Update Feb 18th, 9:30pm AEST)

One episode is travelling along the interwebs to YT at present, and all going well, the other episode will begin uploading in the morning.

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(Update Feb 14th, 5:00pm AEST)

A close up of the final stage of case hardening, just before the first quench - I love cracking these things open. Today and tomorrow I'm working on the post production stuff for the next 2 Fragments videos - the animations, CAD shots, white balance etc - script and narration to follow.

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(Update Feb 12th, 9:00pm AEST)

On the home stretch for shooting these next 2 videos, and now at my favorite part: Assembly and testing 

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(Update Feb 9th, 8:00pm AEST)

I spent the day filing the square drive holes for the new AM tool flywheels - I really like the contrast between the cast bronze surface finish and the turned surfaces.

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(Update Feb 7th, 6:00pm AEST)

Some mild steel that has been carburised and then hardened using the leather charcoal case hardening method that I used to harden the files. This is 1/8" mild steel stock that has been left long enough in the carbon pack to become entirely through hardened (30 mins in the pack at red temp), quenched, then red heated again to straighten out the rod, and requenched. As well as giving me a chance to straighten out the stock,  I think the second heat treatment has also slightly improved the grain structure. The next Fragments video has now grown to become 2 separate videos.

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(Update Feb 4th, 2:30pm AEST)  

Matthew Thomas asks below about casting round stock, and I mentioned in response that I also use the sprues and feeders where possible for round stock too - here is a short video to show you what I mean - it is a short section of the sprue (the bit where the metal feeds into the casting) from a casting made for the next fragments video, and it tapers from approx 13mm to approx 10mm. The taper is a bit hard to get a good grip in the chuck, but there's usually a position where an acceptable hold can be achieved. Then a light pass to turn a cylinder for a subsequent grip, reveals the beautiful fresh bronze underneath. This little section of stock will be used to make some small retaining rings for the Antikythera tool that I am making at the moment - Btw, thank you so much for your patience on this next video. I'm making a tool critical for explaining how the mechanism was made, and I completely misjudged the amount of work required to get it over the line. Had I realised that it was going to take this long to shoot, I probably would have planned it around some other videos - in any case, I'm progressing well and should be close to finishing over the next week or so.

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 (Update Jan 28th, 9:15pm AEST) 

Progress is being made, but wet season rains have meant that I'm way behind folks. I've been shooting bits and pieces for other videos, as well as the sections that I can record indoors for this next Fragments video (Short Video), but the next video drop is going to be quite late. Note to self: don't schedule the shoot of a video requiring a bunch of cast parts during the wet season! Looks like a break in the weather tomorrow - so I will have the furnace fired up at dawn...

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(Update Jan 23rd, 10:35am AEST) 

Yesterday I received the peer review report on the paper I submitted for publication last year. The reviewer was happy for the paper to be published essentially as-is, but made some excellent criticisms and suggestions that will significantly improve the quality of the argument and the way the paper is received. (I was very fortunate to have such a pleasant and generous reviewer give such thoughtful and helpful advice). I have since made another observation that I think is also worth writing up, so I will now work on improving the argument for both ideas, with a view to resubmitting later this year. There is potential for both of the papers to essentially cross over, so I may end up rolling them all into the one paper, but I'll see how it pans out. Either way, I will keep you posted :)

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(Update Jan 21st, 12:00pm AEST)

What happens when you are a bit too lazy to replace a cracked carbon sheath on your pyrometer? Why you annihilate the probe of course! A running repair today, and a good excuse to cover the pyrometer construction in a TGT :)

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(Update Jan 18th, 6:00pm AEST)

More protoytyping and casting over the last few days - Its not often I get to see a nice big chunk of pure tin -  (short video) 5.1kg from northernsmelters.com.au - This will all be used to make bronze alloy over the coming months.

 Btw is it just me or does my mold look a little er... anxious?   

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(Update Jan 15th, 7:00pm AEST)

Here's a finished casting for the prototype I'm working on at the moment - I'm not entirely sure that I've got the size of this flywheel correct for the tool, so I've had a few goes at getting the size right (still not there yet!) - Note the pouring basin and narrow sprue - This example is far from perfect, but I've learned the importance of this pouring basin/sprue/gating approach from watching the Olfoundryman on YT  - He put me on to the books of John Campbell, a master foundryman and researcher in modern casting practice, who teaches exactly how it should be done - I very highly recommend this book in particular, it will completely transform the way you think about casting: https://www.amazon.com/Castings-Practice-Ten-Rules/dp/0750647914/ 

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Back from a short break with the family, and raring to go for 2018 -  For those of you freezing in the Northern Hemisphere right now, this will warm you up :) (Short Video) I spent today prototyping a tool for the AM Fragments series. It has a large cast part which I had a go at making today using a bronze alloy often found in Antiquity (Cu:Sn:Pb/85:10:5) - Btw for those interested, still no word back regarding the technical article I submitted for publication last year. Its coming up on 4 months since it was sent off for peer review, so I'm not really sure what to make of the delay... I will keep you posted.

[STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST) [STATUS] - February 2018 (Update Feb 26th, 9:15pm AEST)

Comments

Thank you very much :)

Boguslaw Smalec

There's bits and pieces in a few books, but I can't think of a specific dedicated book offhand... Although Malcolm Wilds book has a great couple of chapters in the beginning on early horological tools, and is worth alook: <a href="https://www.amazon.com/Wheel-Pinion-Cutting-Horology-Historical/dp/1861262450" rel="nofollow noopener" target="_blank">https://www.amazon.com/Wheel-Pinion-Cutting-Horology-Historical/dp/1861262450</a> - Cheers :)

Clickspring

Hey Chris! Can you recomend any books about history of tools, machining etc ?:)

Boguslaw Smalec

Lets hope so mate :) No link to drafts at this stag, I'm sitting on it until I get it formally published - Cheers

Clickspring

Do you have a link to that draft paper? If it has anything to do with AM, I'm sure you've got something there Watson.

Kevin Reardon

I've fallen asleep many times. Never on the first watch though. They are just so relaxing and pleasant.

Dilapidus

Go for it mate :)

Clickspring

It would need to be simplified a little... i was thinking instead of writing the time taping the numbers out on a mini keypad displaying it on 7 segment displays...

Marty Jones

Haha! Cheers mate :)

Clickspring

Hey Chris... i came accross this little clock... it would make a nice little patreon project . Should be able to do it in a couple of weeks.... maybe half a dozen videos... <a href="https://youtu.be/wu2SPzv7gwY" rel="nofollow noopener" target="_blank">https://youtu.be/wu2SPzv7gwY</a> I have an idea for a slightly alternitive version...

Marty Jones

That's a great question Matthew - All of the old texts that I have sourced on the matter specifically refer to animal based charcoal (ie bone, horn, hoof, leather etc). I can only assume that there must be more to it than it just being a carbon source. Perhaps there is a component in animal based charcoal that acts as a catalyst for the CO reaction? (I have come to the conclusion that the salt in the carbon pack mix performs that function, although I cannot be certain.) As an aside, its worth noting that the color case hardening process used on the receivers of old lever action rifles etc uses predominantly animal based charcoal, although the recipes also generally call for some wood charcoal too, so that's an interesting reference point too - its a fascinating subject :)

Clickspring

Hey again Chris, I know I must be getting real annoying by now ;), but I have another quick question -- With the Carburization process, will any charcoal do or must it be charcoal made through leather? I want to try my hand at forging Damascus steel, I find it to be a beautiful looking steel when etched as well as I'm also a masochist and want to see if I can machine it (yes I am on the crazy side of sanity). Thanks in advance!

Matthew Thomas

Thank you Keith!

Clickspring

Hi Chris! Great work in using the spruce! It’s what those of us in manufacturing consider good material utilization! Can’t wait for your next video

Keith Arrington

Thanks Chris! The option for horizontal casting straight into green sand is probably the easiest option to get me started with again, but as you mention, the tapered Sprue sounds just as good, i just don't think I have anything at the moment that could give a subtle taper in sand like that. I appreciate all your help!

Matthew Thomas

Hey Matthew, I generally cast round stock in sand to keep it simple for the breakout, and as it happens I've been casting a bit of round stock for this next fragments video. I needed some length to the stock so I cut up some dowel and used that as a pattern to cast horizontally, although in the past I've also simply sat a suitable round shape upright in the sand and cast vertically too - I also make use of the sprues and feeders from the casting of other parts - its a bit tricky holding onto the taper for the first cut, but once a decent cylinder length is turned for a better grip, you can usually get something useful out of them. Cheers :)

Clickspring

Hey Chris! Back again, do you have any tips on casting your own round stock? I went gold panning out near Ballerat and found an old burned out car with a whole bunch of aluminium in pools around it, i decided to alloy it with magnesium and copper to make my own Duralumin but found that as i cast it into steel tubes, the Al wouldn't be persuaded and be punched out despite freezing it in the freezer over night... I get steel pipe isn't the best material to cast into... however, would you have any insights? Please and thanks!

Matthew Thomas

Lots of people watch YouTube channels to help go to sleep; just like many people used to read before going to bed. I'd take it as a compliment, because it means you're not a shouting attention-seeker and that you've balanced the audio levels on your videos really well.

Chris

Thanks very much Marc :)

Clickspring

Well, I can point you in the direction of cheap resources for microcrystalline wax and carnauba waxes if you need them. I suspect you won't have any issue tracking them down on your own, but that offer stands anyway.

Marc Banks

Hey Marc - yes in a lot of respects I think it will be more suitable than sand casting - its something I hope to spend some time learning about this year. Cheers :)

Clickspring

Have you considered doing lost wax casting for some of the one off components that you need higher precision on?

Marc Banks

Ill have to check out the book, thanks. I could do with some snow, the 45 degree Christmas weather is killing me. 😁

Adam

Absolutely!!

Clickspring

is that "The Scream" in casting sand?

Nathan Davey

I'm hoping to include a fair amount of the casting process in this next video, and definitely will be doing more casting vids this year. Yes all pieces are tin; I assume the 2 small pieces were used to make up the weight to what I ordered - Cheers mate :)

Clickspring

Y'know, an all-casting video wouldn't necessarily be a bad thing :) Were those two pieces taped to the 5.1 kg ingot also tin, or are you experimenting with different metals?

Erik Larsen

Your level of motivation and passion continues to impress. Not hanging around in 2018... :)

Chris Talbot

Thanks Andrew!

Clickspring

As usual, I couldn't resist kicking it up a notch - its now going to be a fully modular tool - more updates as soon as I get it all sorted out :)

Clickspring

Thanks Andrew :)

Clickspring

Cheers Rob :)

Clickspring

Hi Chris, thought you might be interested in this call out to clickspring <a href="https://youtu.be/6CQgzqYuo04?t=148" rel="nofollow noopener" target="_blank">https://youtu.be/6CQgzqYuo04?t=148</a> . It's by the guy who made the marble music machine. :)

Andrew Hoadley

I was freezing in the northern hemisphere, but not any more! Can’t wait for the next video.

Robert Lazare

Chris, as others have said, a journal peer review process can take 3-6 months, depending on the journal. However, it is not unreasonable to send an email to the editor and ask what's going on with your submission. Best of luck on that!

Aha, update! Looking forward to watching you turn that casting into a finished part in the next Fragments video!

Chris Talbot

Cheers for the reply mate. A close friend of mine was heavily involved with research contributing to a true forensic sculpture of the bust of Robert the Bruce of Scotland, unveiled at the Stirling Smith Museum in March last year. They are releasing an anniversary video in March of this year. The academic team expect the related article to be published some time late this year. However, that particular subject is rife with academic politics and infighting between various interest groups, which complicates matters and makes it a "worst case" example. I'm sure your conjecture is valid and will contribute to the field. :)

Chris Talbot

Dylan T, congratulations... A fine way of putting your wife to sleep! Huahaha!

Gordon Burns

I have always watched your videos, Chris and never felt sleepy!

Gordon Burns

Ha ha! You know I hear that comment about the vids making some people sleepy a lot more than I would have expected - quite a few people have mentioned that watching helps either them or their kids get off to sleep - I'm not entirely sure what to make of it!

Clickspring

Thanks for the info Chris - a few people here have said the same thing, so I guess its just the norm. The article is a presentation of some suggested gearing for the planetary mechanism - all conjectural of course, but it struck me as worth sharing :)

Clickspring

Thanks Gordon - I must admit I am becoming more inclined to start formally writing some of this stuff up the more I get into it - I certainly did not expect that sort of time for review tho!

Clickspring

When you last video posted I told my wife I really like your videos, she watched a bit and said it was putting her to sleep, I told her I really REALLY like your videos.

Dylan T

Hi Chris, I'm not in academia but read/follow the occasional paper in fields that interest me. I was under the impression that full peer review of a technical article in a respected journal can sometimes take up to a year, depending on the specific publication and the subject matter/depth of the paper under review. Hopefully you won't have to wait that long though! Out of interest, what was the subject of your article? Edit: I suppose the long delay in review for publication by good journals is a big part of the reason we have so much "junk science" floating about the mainstream media these days, along with the less beneficial aspects of internet culture... "First!" being better than "Fact!". ;)

Chris Talbot

Another great tid-bit, Chris, however short it may be. We, your fans, avidly await your next real missive with baited breath. As for a peer-reviewed paper, it can take up to (and sometimes exceeding) a year before the result(s) is(are) published. The PhD at the end of the tunnel is very well worth the wait. Your work on the Antikithera mechanism is research enough for a PhD and you get my vote, Chris.

Gordon Burns

Hey William, yes Petrobond - I get it from here: www.castmetalservices.com - Cheers :)

Clickspring

Cheers Dennis!

Clickspring

Is that oil sand? I think you may have mentioned where you got it from but I can't recall.

William Trevena

Thanks Sean, I appreciate you sharing that info - I'll follow it up again and see where its at :)

Clickspring

Ha ha! thank you mate :)

Clickspring

Chris, as someone who has submitted and reviewed multiple articles to journals, 4 months is not a very long time in the review process. This depends very much on the specific journal, but I wouldn't worry yet. You could also ask where you are in process. Best of luck!

Sean Torrez

Chris, your videos are like crack, just saying :-)

Chris Muncy

Most of us can't wait for more videos :) to 2018!

Strothy2


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