enlarging plans

I just want to thank all lof you for your replies, they've been educational and informative and at times quite entertaining, now, where's that B-36 I',m wanting to turn into a FICON?????? I'll let you know how it turns out, it's going to be big for sure

radish1us,

Don is one of the most knowledgable and helpful people on this forum - a good guy.  Your comments are completely out of line.

Suggest you go and read the rules for posting here because your post just broke a whole bunch of them.

Mark

radish1us

W.T.F. he asked a simple question and you reply with an answer that requires a scientific degree to unfathom the mysteries of your answer.

He just has to go to a photo-copier and ask the dude to use the increase button, add 200 percent and voila, he's got what he wants, without all that crud. A standard copy is 100%, so just double it to 200% and he's on his way, eh.

I'm only a newbie to this forum, but, from what I can gather so far, is that you appear to be, or are attempting to be,  the local know-it-all in residence. That's OK, but why all the extra B**#.S**!. when he just asked a very simple question? 

Easy man, I'm not buddy here with no one but what I have gathered here from Don is far, far away from your assessment in just a short period of time. Don has always been of help around here. You gave a simple answer and Don gave his. That's the beauty of the community forums.

W.T.F. he asked a simple question and you reply with an answer that requires a scientific degree to unfathom the mysteries of your answer.

He just has to go to a photo-copier and ask the dude to use the increase button, add 200 percent and voila, he's got what he wants, without all that crud. A standard copy is 100%, so just double it to 200% and he's on his way, eh.

I'm only a newbie to this forum, but, from what I can gather so far, is that you appear to be, or are attempting to be,  the local know-it-all in residence. That's OK, but why all the extra B**#.S**!. when he just asked a very simple question? 

The general way to do it is this- ratio the two scales to form a fraction.  So the needed fraction will be either 144/72, or 72/144.  Now, which way?  That is, which is the denominator and which is the numerator?  Reasoning is the secret here rather than the math.  Are you trying to enlarge or reduce.  In your case you are trying to enlarge.  So the fraction must be larger than 1.  Only the 144/72 does that, so that is the ratio.  Simplifying the fraction gives 2.  So you need to multiply every measurement on the 144 plan by a factor of 2.  You might set up an Excel spreadsheet to make this go faster.

In general, this technique works for any change of scale, whether enlarging or reducing.

If you use a calculator and divide 144 by 2, you should get 72, so that's pretty simple then, eh.

Go and get them increased by 200 per cent.