Messages

8491

Tangent Corner / I don't believe it.

« on: November 11, 2008, 03:04:48 AM »

Yesterday I went to collect some CNC stuff which I had bought on ebay. On the way home I stopped at McDonalds for refreshments and my wife was very quick to spot the 'peel off strip' competition on the coffee cups. No sooner had she peeled off the strip when she was jumping up and down saying "I have won a mobile home", "I have won a mobile home". I pointed out to her that she couldn't have won an RV because the first prize was only a Big Mac but she insisted that she had won a mobile home. When I finally got to see her coffee cup it said "win a bagel".


Tweakie.

 

8492

Tangent Corner / Re: Serious Puzzler

« on: November 09, 2008, 09:37:06 AM »

After some more serious thought, an idea comes to mind - If the OD of your piece parts are accurate then a jig /gauge (which is essentially a block with an accurately bored hole or collet) into which your part could be inserted to maintain it's roundness whilst it is measured with the tri-leg micrometer may possibly allow the ID to be measured correctly ?.

Tweakie.


(no trick - the coins are real)

8493

Tangent Corner / Re: Serious Puzzler

« on: November 09, 2008, 05:34:27 AM »

I believe the mathematical solution for finding the distance between any three equi-spaced points on the circumference of an ellipse is extremely complex and would therefore be difficult to demonstrate to anybody.

Having said that someone is bound to prove me wrong and solve your problem.

In consolation, when I was employed in engineering I remember that diameter and roundness tests were two entirely different things and the plug gauge was the master reference for hole sizes. The attached picture shows two seven sided coins, neither of which is round however measuring the diameter of either with a standard micrometer will show it to be the same diameter at any point of measurement.


Tweakie.

8494

Tangent Corner / Re: What the.........?

« on: November 09, 2008, 05:00:15 AM »

I think that Brett's original picture dates back to Roman times.


Tweakie.

8495

Show"N"Tell ( What you have made with your CNC machine.) / Re: Lithopane

« on: November 09, 2008, 03:14:30 AM »

Another great one Kent.


Tweakie.


(I wish I was that skinny).

8496

Tangent Corner / Re: What the.........?

« on: November 08, 2008, 08:18:17 AM »

Hi Brett,

I think you missed out the nuts in your diagram.


Tweakie.

8497

Show"N"Tell ( What you have made with your CNC machine.) / Re: complex turnings

« on: November 08, 2008, 04:15:17 AM »

Hi Marcel,

Such amazing workmanship - my complements.


Tweakie.

8498

Tangent Corner / Re: A Puzzle.

« on: November 07, 2008, 08:51:05 AM »

Well done Graham and RC the perfect solution.

Tweakie.

8499

Tangent Corner / A Puzzle.

« on: November 06, 2008, 04:59:04 AM »

Now before you all say that I should get out more - this was profile cut on a rainy afternoon when the local 'house of ill repute' was closed for redecoration. I don't think it involves quantum mechanics or string theory so we should be able to solve this mystery.

(thanks to David Pye for the lead).

Tweakie.

8500

Tangent Corner / Re: What the.........?

« on: November 05, 2008, 05:05:01 AM »

The problem could be in the 'raster to vector' conversion software. Sam will have the answer.


Tweakie.