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Author Topic: scaling  (Read 264 times)

Rob47

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scaling
« on: September 13, 2017, 07:14:13 PM »


Please bear with me but cant get my head round the reason for this, but suspect it will be obvious.


using the scale conversion chart by Ken  Hagerup from on line I arrive at % figure of 277.78 for enlarging from 1/200 to 1/72  if I follow the divide what you have by what you want I arrive at 2.77  same figures but why has the decimal point moved two places.


I do know this works as used this chart for enlarging Bristol from 1/96 to 1/72, just don't get the decimal move.
Cheers


Bob
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gingyer

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Re: scaling
« Reply #1 on: September 13, 2017, 07:57:55 PM »


the 2.77 is decimal for percentage where
100% is shown in decimal as 1
50% is 0.5


so... 277% is 2.77


I hope that makes sense...


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Rob47

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Re: scaling
« Reply #2 on: September 13, 2017, 08:15:36 PM »


gingyer


Thanks for that, I think I get it, so the 277% as on the chart is what I give to the copier and that should give me a model of 10.82 feet


Bob
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gingyer

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Re: scaling
« Reply #3 on: September 13, 2017, 08:52:45 PM »

Yeah that should be correct
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Rob47

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Re: scaling
« Reply #4 on: September 13, 2017, 10:14:38 PM »


Many thanks all is clear now. just hope their roll on the printer is long enough lol


Bob
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Rob47

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Re: scaling
« Reply #5 on: September 14, 2017, 04:33:09 PM »


Well went to what used to be staples, and they cant enlarge to required figure, can only do 150% so bit stuck now, so if anyone has any ideas, love to hear them.


Bob

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Tug-Kenny

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Re: scaling
« Reply #6 on: September 14, 2017, 06:22:41 PM »

Perhaps you could enlarge the 'enlargement'

That is to say, enlarge it half way to fill the sheet.  Then enlarge the copy onto two sheets.  I know it involves joining but at least you would have the size you require.

I'm often doing stunts like this to get to the actual size I require.    :}

Cheers

ken
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ballastanksian

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Re: scaling
« Reply #7 on: September 14, 2017, 07:37:00 PM »

If the issue is their machine is not very advanced, or their operative isn't very experienced, I reccomend going to a professional printers who have the machines to enlarge and print all sorts of wonderful stuff.

I go to Footprintz in Crewkerne as they have a passing interest in my hobby but also, they are a family business and are the knowledge and experience.  Because the HMS Penelope plan was too deep, it got printed onto two sheets but this didn't affect the use of the plan.

Despite the inroads made by PCs and printers in the home, there are numerous printers about.
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Rob47

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Re: scaling
« Reply #8 on: September 14, 2017, 09:25:35 PM »


Might well give them a call, its not that far from and a day out would be good.


Bob
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gingyer

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Re: scaling
« Reply #9 on: September 15, 2017, 12:11:52 AM »

Worst case is to ( if my sums are correct)
200 scale x 150% = 133.333 scale
133.333 scale x 150% =  88.8889 scale
88.889 scale x 123.45% = 72 scale


As I say worst case scenario and anyone can feel free to check
My sums :-))

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