Constructing A Byzantine Sundial-Calendar - Part 3 (Making The Arbors, Ratchet & Bowl)

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Hello mate, I use these standard blades: <a href="https://amzn.to/2A3nKN3" rel="nofollow noopener" target="_blank">https://amzn.to/2A3nKN3</a> - Cheers :)

Graeme Brumfitt

Gday Chris TFS, was that a spiral scroll saw blade, and if so how do you find using them? G :)

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Hey Stewart, often it will set within a few seconds, particularly if you are very sparing with the glue. But to be certain I usually give it a few minutes before I start cutting - great to have you on board mate :)

stewart p

Hi Chris,I am a new subscriber and working my way through old videos. Just a quick question i was wondering how long do you let the super glue set on glue on mandrels before machining?

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Hey Jerry, I prefer Swiss made Grobet files - you can pick them up from many suppliers, but I find these guys good to deal with: <a href="http://www.artcotools.com/grobet-needle-files/" rel="nofollow noopener" target="_blank">http://www.artcotools.com/grobet-needle-files/</a>

Jerry Gepes

Chris, I'm not sure if I've already asked but what brand of file do you use/prefer?

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Hey Nigel, they are called Arkansas stones, I get mine from here: <a href="http://www.artcotools.com/norton-arkansas-stones/" rel="nofollow noopener" target="_blank">http://www.artcotools.com/norton-arkansas-stones/</a>

Nigel Cox

What are the white stones you are using please Chris

Clickspring

Terrific to have you watching Bill :)

Bill Yester

Another fine example of your incredible craftsmanship and skill. I’ve built your finger plate clamp and I use it so much, I wonder how I’ve gotten along without it. Thank you!

Clickspring

Hey Ralph, the etching process is the same as this: <a href="https://youtu.be/qpy5O0b7cL8" rel="nofollow noopener" target="_blank">https://youtu.be/qpy5O0b7cL8</a>

Ralph McCoy

Chris, is there somewhere that shows how it is done ? I was thinking about practicing this weekend as it is still great weather here before it turns cold and snowy and I am house bound. Great video #5 Antikythera wow Ralph

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Hey Ralph, I'll publish the etch template files when I complete the video showing the etching of those parts - cheers :)

Ralph McCoy

G'Day Chris, I am looking at the drawings for the Byzantine #5 and on drawing #3 LUNAR PHASE DATE DISC is says SEE OTHER FILES FOR ETCH TEMPLATE, I can not find it do you have time to tell how to see it.

Ralph McCoy

G'Day Chris,

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Ha ha! Another one out today too Peter, TGT#3 Cheers :)

Peter Larsen

I really need to check patreon more often. I've been looking daily at YouTube waiting for the next installment and here it was, made weeks ago.

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Hey Jochen, I've just started to try out the 'Tags' feature on Patreon -it sort of classifies the post via a common keyword tag. If you look at the top left side of the page you'll see "Featured Tags" If you click on any one of those, it should separate out the videos you want to see, and hide the rest. Cheers :)

Clickspring

Hey James, I think of it this way: A gear train is ultimately just a ratio expression. ie "some required input value":1 We are limited to integer values to achieve any given ratio, because we can only ever have whole numbers of teeth on our wheels. So depending on the degree of precision desired in the calculated ratio, inevitably (after factor reduction) one or more prime numbers will be required to achieve the desired precision - non primes alone, will simply not get us there if we want 4th or 5th decimal place accuracy. Happy to go through an example if you need more detail than that, cheers :)

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Cheers Nelson !

Jochen Römling

Thanks for your spectacular videos! Could you always put a link to the first episode and the next episode into each video description? I'm late to the game and it is quite some work to scroll backwards and forwards through all your posts in order to find the videos in the right order.

James Cromwell

Hey Chris, I was just rewatching the dividing plate episode and it just hit me... why are prime numbered gears used?

Nelson Baietti

I wish the original creators of this device could time travel and watch this series, it would certainly bring tears to their eyes...!

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Cheers Mike!

Clickspring

If it walks like a duck, quacks like a duck... its definitely a horse :)

Jace Walton

Horse? I though it was a duck...

Mike Michelizzi

Consistently amazing work, Chris! Thanks also for the attention to questions here in the comments - I learn almost as much here as I do from the videos. Cheers!

Clickspring

I'm so pleased to hear this David!

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Cheers paul :)

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Terrific to hear that Chris :)

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Cheers mate :)

Clickspring

Thank you John :) Re Time: It really depends a lot on the task. Some thing like parting off a couple of washers is 5 minutes, other tasks like filing the ratchet to shape I guess would be roughly an hour. Generally speaking, fabrication time is somewhere around 1/10th of the production & editing time

David Olson

Chris, thanks again for all these fantastic videos you do. While I've been interested in learning machining for many years, your series has been part of the impetus for me to register for some classes at the community college here. Classes start next week; it'll be a long while before I have anywhere close to the skill you do, but I'm very excited to get my hands on some tools!

Paul Busby

Brilliant. Really looking forward to seeing how this device works.

Chris Talbot

Well, this made my Monday night much more enjoyable. Beautiful work as always Chris... wonderful precision and finish in those tiny parts.

Tolleiv Ree

Thanks for the video Chris, as always I am amazed of the level of detail you go to.

John

Hey, Chris. spectacular videos as always. i'm curious how many hours go into the fabrication (rather than the production) side of your videos? it looks like a lot.

Clickspring

Ha ha! Re the stones: The Arkansas stones are really easy to clean with a light solvent like white spirits. They're not really that prone to loading up, although they are crazy brittle - they chip if you so much as look at them too hard! The coarser stones like the India stone etc I find I can clean off both steel and brass with WD40 fairly easily . The only material that I avoid using them on is Aluminium - its just too soft, and sticks like glue and gums them up. Everything else tends to come out with the solvents without too much trouble. In both cases, I dress the stones fairly regularly to keep them flat, so that also takes care of any persistent little bits of material too - cheers :)

Clickspring

Cheers Jess :)

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Thank you Dale!

Jeff Swayze

Fantastic work Chris! I will admit that I was preparing a snarky comment regarding the machining marks on the square arbor, but alas you filed and polished it smooth soon thereafter ;-) I do have a legitimate question for you though - you do a lot of stoning and I was wondering how you clean the stones or prevent them from loading up? Thanks!

Jess Neal

Unparalleled precision work Chris. So impressive you do so much hand finishing

Dale Jenner

Beautiful!

Clickspring

Thank you mate :)

Clickspring

I'm so pleased to hear that mate!

Julian Nicolai

Man this series is my favourite, as soon as it comes out I get a snack, drink, fullscreen, the full nine yards like no other. Another awesome episode, thanks Chris!

John Saunders (NYC CNC)

Stunning.

Clickspring

Cheers mate :)

Clickspring

They're Arkansas stones - not sure the grit equivalent, but they're very fine. Knife honing stones basically. -- edit -- I get mine from here, the 'hard' version: <a href="http://www.artcotools.com/norton-arkansas-stones/" rel="nofollow noopener" target="_blank">http://www.artcotools.com/norton-arkansas-stones/</a> Cheers mate :)

Clickspring

Ha ha! Cheers mate!

Paul Reeber

Very impressive hand filing. What grit were the stones you were using?

Thanks Chris !

Gordon Burns

Yet another brilliant example of your extremely accurate style and engineering ability. Yet again, well done Chris, mate! Best get on with the next instalment... you know I want it!

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I hope so too Leo - I appreciate your support and encouragement mate, thank you :)

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Thank you mate :)

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You are too kind Richard, but thank you :)

Leo G.

Sigh... Another amazing video. Thanks so much for the continued greatness. I sincerely hope that your YouTube channel (and Patreon, both of which I shamelessly share with everyone I can) will inspire a whole new generation of machinists. Heaven knows we need more skilled trades workers.

Clickspring

Ha ha! Cheers Nikolaos!

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I'd guess roughly an hour, but I tend not to notice the time - its very relaxing, and I tend to zone out :)

Clickspring

Very kind of you mate, thank you :)

Michael Lloyd

I'm simply amazed. Patience and craftsmanship perfectly blended...

Richard Thompson

I'm in the presence of greatness... Just amazing job...

Excellent work and episode. You my friend have so much patience and are indeed a perfectionist which makes your work even more impressive. Kudos! Can't wait for the next episode of the BSC

Dilapidus

I wonder how long you spent doing the hand work on say, the ratchet.

Still can't get over how good you are with a set of files - fantastic to watch. :)

Clickspring

Cheers Mark!

Mark Doss

Awesome. Thx!