Mfcttrf

Water Bottle Rocket Thrust - two calculation methods not matching

Creating chess engine, machine learning vs. traditional engine?

Can I color text by using an image, so that the color isn't flat?

grep pairs of patterns and file

Modern warfare theory in a medieval setting

How to discipline overeager engineer

Why did a young George Washington sign a document admitting to assassinating a French military officer?

How to make "acts of patience" exciting?

How are steel imports supposed to threaten US national security?

How to write Hanief (my name) in Japanese?

Why does transition from one electron shell to another shell always produce massless photon?

Is having your hand in your pocket during a presentation bad?

Tikz – Box/frame arround Text with interruption

Why not build an "approximate" Analytical Engine before the complete one?

A sentient carnivorous species trying to preserve life. How could they find a new food source?

How acceptable is an ellipsis "..." in formal mathematics?

I am confused with the word order when putting a sentence into passé composé with reflexive verbs

Was Wayne Brady considered a guest star on "Whose Line Is It Anyway?"

What does IKEA-like mean?

How much money should I save in order to generate $1000/month for the rest of my life?

Is the text of all UK treaties and laws public?

What can I do to avoid potential charges for bribery?

Overlay image with parts of another image

Can a Creature at 0 HP Take Damage?

Why not build an “approximate” Analytical Engine before the complete one?

What was the first piece of software to be called an engine?Why were floppy drives not any faster?Why were teletype printers not used for DOS computers?Why did C have the return type before functions?Why does nobody attempt to build Charles Babbage's Analytical Engine?Can we express the instructions to the Analytical Engine in terms of assembler or machine code?Why were early personal computer monitors not green?The almost-was Atari IBM PCWhy was the shrinking from 8″ made only to 5.25″ and not smaller (4″ or less)?Build automation tools before make?

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;

1

From the website https://plan28.org/ and blog http://blog.plan28.org/, it seems that the original documents are scattered and hard to decipher. It might be that the plans are not even close to be finished.

So, I wonder, why not, at first, build machine, made of 3D printed parts, that would closely resemble the original mechanics and have the same programing language? Wouldn't it at least help to understand the original schemes?

history analytical-engine

share|improve this question

asked 10 hours ago

user36088user36088

9144 bronze badges

New contributor

user36088 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment
 | 

1

From the website https://plan28.org/ and blog http://blog.plan28.org/, it seems that the original documents are scattered and hard to decipher. It might be that the plans are not even close to be finished.

So, I wonder, why not, at first, build machine, made of 3D printed parts, that would closely resemble the original mechanics and have the same programing language? Wouldn't it at least help to understand the original schemes?

history analytical-engine

share|improve this question

asked 10 hours ago

user36088user36088

9144 bronze badges

New contributor

user36088 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment
 | 

From the website https://plan28.org/ and blog http://blog.plan28.org/, it seems that the original documents are scattered and hard to decipher. It might be that the plans are not even close to be finished.

So, I wonder, why not, at first, build machine, made of 3D printed parts, that would closely resemble the original mechanics and have the same programing language? Wouldn't it at least help to understand the original schemes?

history analytical-engine

share|improve this question

asked 10 hours ago

user36088user36088

9144 bronze badges

New contributor

user36088 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 10 hours ago

user36088user36088

9144 bronze badges

New contributor

user36088 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 10 hours ago

user36088user36088

9144 bronze badges

New contributor

user36088 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 10 hours ago

user36088user36088

9144 bronze badges

New contributor

user36088 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 10 hours ago

user36088user36088

9144 bronze badges

1 Answer
1

active

oldest

votes

5

For the same reason you don't build a bridge by grabbing some metal and stone, dragging it to the shore of a river, and start stacking it and bolting it together.

Trying just to build and run the Analytical Engine from incomplete plans is about as likely to work or be useful as typing in an incomplete computer program and "just running it."

But worse, since these are physical parts you're talking about, fabricating them without without sufficient planning is would inevitably lead to massive amounts of expensive rework as you find out that pieces you've built don't fit together and/or work properly because you didn't bother to check the design first. It's much cheaper, especially in this age of easy 3-D modelling, to build a computer model and test it before doing the real thing. (And by the way, it's unlikely that much of it could be built from 3D printed parts; the stresses many of the components have to deal with will require fabrication in metal.)

Since there's currently no plan in complete, ready-to-build form, that needs to be made first, and that's made by carefully studying all of Babbage's work over the decades he did it. Even then, we'll need to understand the plan and the techniques used in it, and that's also what we get through study. (Imagine you were given detailed plans for a modern bridge. Would you be able to supervise the construction workers to get it built safely and economically?)

share|improve this answer

answered 9 hours ago

Curt J. SampsonCurt J. Sampson

5,9241717 silver badges4848 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  To focus on the OP's actual question, how would you produce 3D printed parts, without first building a virtual computer model of them? And once you have computer models of the parts, why not do the obvious thing and model how they work together before you make physical printed parts that maybe you can't even assemble.
  
  – alephzero
  9 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  A virtual model would require many polygons and the collision boxes would have to be very precise. If you have thousands of elements, I think it would be very slow. What I think is that you are not building a bridge here, but a small bridge, as a proof of concept. There are guns built from with printed plastic, so I am not so sure about the stresses. I am also not so sure of whythere would be no planning.
  
  – user36088
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @user36088 Well are you suggesting that they start building something now, or that they continue on their current path of studying the documents and trying to make plans based on them?
  
  – Curt J. Sampson
  8 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Both of them. There is a certain plan28a, with more accurate designs, but I really doubt there will ever be a version with a full plan. Given that the analytical engine was a pioneer project, I expect that there will be multiple suggestions, but not an actual working implementation, because it lacks testing with a device.
  
  – user36088
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @user36088 The slowness of a computer simulation of a candidate design will seem lightning-quick compared to dismantling and re-assembling a physical machine over and over again as design variants are tried out.
  
  – John Dallman
  3 hours ago
  

  
  
  
  

add a comment
 | 

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "648"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/4.0/"u003ecc by-sa 4.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

user36088 is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fretrocomputing.stackexchange.com%2fquestions%2f12475%2fwhy-not-build-an-approximate-analytical-engine-before-the-complete-one%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

5

For the same reason you don't build a bridge by grabbing some metal and stone, dragging it to the shore of a river, and start stacking it and bolting it together.

Trying just to build and run the Analytical Engine from incomplete plans is about as likely to work or be useful as typing in an incomplete computer program and "just running it."

But worse, since these are physical parts you're talking about, fabricating them without without sufficient planning is would inevitably lead to massive amounts of expensive rework as you find out that pieces you've built don't fit together and/or work properly because you didn't bother to check the design first. It's much cheaper, especially in this age of easy 3-D modelling, to build a computer model and test it before doing the real thing. (And by the way, it's unlikely that much of it could be built from 3D printed parts; the stresses many of the components have to deal with will require fabrication in metal.)

Since there's currently no plan in complete, ready-to-build form, that needs to be made first, and that's made by carefully studying all of Babbage's work over the decades he did it. Even then, we'll need to understand the plan and the techniques used in it, and that's also what we get through study. (Imagine you were given detailed plans for a modern bridge. Would you be able to supervise the construction workers to get it built safely and economically?)

share|improve this answer

answered 9 hours ago

Curt J. SampsonCurt J. Sampson

5,9241717 silver badges4848 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  To focus on the OP's actual question, how would you produce 3D printed parts, without first building a virtual computer model of them? And once you have computer models of the parts, why not do the obvious thing and model how they work together before you make physical printed parts that maybe you can't even assemble.
  
  – alephzero
  9 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  A virtual model would require many polygons and the collision boxes would have to be very precise. If you have thousands of elements, I think it would be very slow. What I think is that you are not building a bridge here, but a small bridge, as a proof of concept. There are guns built from with printed plastic, so I am not so sure about the stresses. I am also not so sure of whythere would be no planning.
  
  – user36088
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @user36088 Well are you suggesting that they start building something now, or that they continue on their current path of studying the documents and trying to make plans based on them?
  
  – Curt J. Sampson
  8 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Both of them. There is a certain plan28a, with more accurate designs, but I really doubt there will ever be a version with a full plan. Given that the analytical engine was a pioneer project, I expect that there will be multiple suggestions, but not an actual working implementation, because it lacks testing with a device.
  
  – user36088
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @user36088 The slowness of a computer simulation of a candidate design will seem lightning-quick compared to dismantling and re-assembling a physical machine over and over again as design variants are tried out.
  
  – John Dallman
  3 hours ago
  

  
  
  
  

add a comment
 | 

5

For the same reason you don't build a bridge by grabbing some metal and stone, dragging it to the shore of a river, and start stacking it and bolting it together.

Trying just to build and run the Analytical Engine from incomplete plans is about as likely to work or be useful as typing in an incomplete computer program and "just running it."

But worse, since these are physical parts you're talking about, fabricating them without without sufficient planning is would inevitably lead to massive amounts of expensive rework as you find out that pieces you've built don't fit together and/or work properly because you didn't bother to check the design first. It's much cheaper, especially in this age of easy 3-D modelling, to build a computer model and test it before doing the real thing. (And by the way, it's unlikely that much of it could be built from 3D printed parts; the stresses many of the components have to deal with will require fabrication in metal.)

Since there's currently no plan in complete, ready-to-build form, that needs to be made first, and that's made by carefully studying all of Babbage's work over the decades he did it. Even then, we'll need to understand the plan and the techniques used in it, and that's also what we get through study. (Imagine you were given detailed plans for a modern bridge. Would you be able to supervise the construction workers to get it built safely and economically?)

share|improve this answer

answered 9 hours ago

Curt J. SampsonCurt J. Sampson

5,9241717 silver badges4848 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  To focus on the OP's actual question, how would you produce 3D printed parts, without first building a virtual computer model of them? And once you have computer models of the parts, why not do the obvious thing and model how they work together before you make physical printed parts that maybe you can't even assemble.
  
  – alephzero
  9 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  A virtual model would require many polygons and the collision boxes would have to be very precise. If you have thousands of elements, I think it would be very slow. What I think is that you are not building a bridge here, but a small bridge, as a proof of concept. There are guns built from with printed plastic, so I am not so sure about the stresses. I am also not so sure of whythere would be no planning.
  
  – user36088
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @user36088 Well are you suggesting that they start building something now, or that they continue on their current path of studying the documents and trying to make plans based on them?
  
  – Curt J. Sampson
  8 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Both of them. There is a certain plan28a, with more accurate designs, but I really doubt there will ever be a version with a full plan. Given that the analytical engine was a pioneer project, I expect that there will be multiple suggestions, but not an actual working implementation, because it lacks testing with a device.
  
  – user36088
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @user36088 The slowness of a computer simulation of a candidate design will seem lightning-quick compared to dismantling and re-assembling a physical machine over and over again as design variants are tried out.
  
  – John Dallman
  3 hours ago
  

  
  
  
  

add a comment
 | 

For the same reason you don't build a bridge by grabbing some metal and stone, dragging it to the shore of a river, and start stacking it and bolting it together.

Trying just to build and run the Analytical Engine from incomplete plans is about as likely to work or be useful as typing in an incomplete computer program and "just running it."

But worse, since these are physical parts you're talking about, fabricating them without without sufficient planning is would inevitably lead to massive amounts of expensive rework as you find out that pieces you've built don't fit together and/or work properly because you didn't bother to check the design first. It's much cheaper, especially in this age of easy 3-D modelling, to build a computer model and test it before doing the real thing. (And by the way, it's unlikely that much of it could be built from 3D printed parts; the stresses many of the components have to deal with will require fabrication in metal.)

Since there's currently no plan in complete, ready-to-build form, that needs to be made first, and that's made by carefully studying all of Babbage's work over the decades he did it. Even then, we'll need to understand the plan and the techniques used in it, and that's also what we get through study. (Imagine you were given detailed plans for a modern bridge. Would you be able to supervise the construction workers to get it built safely and economically?)

share|improve this answer

answered 9 hours ago

Curt J. SampsonCurt J. Sampson

5,9241717 silver badges4848 bronze badges

share|improve this answer

answered 9 hours ago

Curt J. SampsonCurt J. Sampson

5,9241717 silver badges4848 bronze badges

answered 9 hours ago

Curt J. SampsonCurt J. Sampson

5,9241717 silver badges4848 bronze badges

answered 9 hours ago

Curt J. SampsonCurt J. Sampson

5,9241717 silver badges4848 bronze badges