1/35 to 1/18

[flyboy_fx]

What number do I multiply to bring 1/35 measurements to 1/18, and how do I figure that out?

Math is not really my thing.

[pickelhaube]

Measure the 1/35 part and multiply by 1.944

It is so much easier to use the metric system.

That way you do not have to use fractions. The metric sytem uses 10.

If your part is 3 mm ( milimeters ) you multipl byt 1.944.

3mm x 1.944 = 5.83

10mm x 1.944 = 19.44 .

Got it ?

[paulpratt]

Just use this.

http://www.printmini.com/calc.shtml

[smittyrob64]

Just divide 35x18 which equals 1.9444, so 194%

Take your measurment and with calculator multiply by 194%

If you have 1/35 plans you can scan them and in Photoshop increase the image size by 194% giving you 1/18.

What are YOU building?

[flyboy_fx]

GOTCHA! Thanks guys, now I remember! Yea PH, I basically only use the metric system when building. I never use the other one.

And for percents, just move the decimal over two to the right, correct? If I was converting some 1/18 plans to 1/35. I would, divide 18 by 35 = 0.514 (rounded), move the decimal over two to the right = 51.4%, then multiply the plans buy that much?

[smittyrob64]

Exactly.

[aferguson]

wrong......you've got it backwards.

when dealing with math stuff, try and think about it in practical terms first and that will usually guide you to the right formula.

In this case, you know that 1/18 scale is about twice as big as 1/35, right? So, the number you should be increasing the plans by should be around 2, ie you want to double the size of the plans (which would actually make them 1/17.5, not quite 1/18).

So, using 35 and 18, how do you get a number that's almost 2? You divide 35 by 18 and get 1.944, like Pickel said. So enlarge your plans by 1.944 and that will make 1/35 scale plans into 1/18 scale plans.

I would avoid using percentages as they can get confusing because you have to take into acount decimal points and the original amount is 100% and so on.

Just keep things as simple as possible when doing any math and think it through in practical terms first..that will almost always guide you to the right answer.

If the photocopier you are using deals in percentages then, yes, you move the decimal point two to the right. So you would enlarge the plans my 94.4%. Note that it's not 194.4%. Enlarging them BY 100% would be doubling them in size, so, since you don't quite want them doubled in size, you ignore the 1 in front of 1.944 and just deal with the .944, move the decimal two to the right and you get 94.4% enlargement. As i said, dealing with percentages can get a bit confusing unless you really understand what they mean.

A simple way to double check before you do all your copying is to copy one bit, and measure it. If it's nearly double the size of the same section in the 1/35 scale plans then you are on the right track. If it's way off, you've made a mistake somewhere.

Most photocopiers deal in magnification amount, not percentages, so you would just use 1.944.

[smittyrob64]

No he doesn't have it Wrong, he was talking about reducing 1/18 plans to 1/35, in which case you divide the other way 18x35=.514 so reduce by 51.4%.

How is using percentage confusing?, you just move the decimal 2 places, you don't even need to think about it.
Just use the way you've been using, multiply by 1.944 or 194% and you'll be fine.

[aferguson]

lol.....sorry, I read it backwards. I read it that he was enlarging 1/35 plans. Yes, what he said is correct.

[smittyrob64]

Enlarge 1/35 to 1/18,......divide 35x18 = 1.944/194%
Reduce 1/18 to 1/35,..... divide 18x35 = .514/51.4%

[aferguson]

If he multiplied BY 194% he would get plans that are nearly 3 times as big.

Increasing something by 100% doubles its size. So increasing something by 194% would nearly triple it.

Most photocopiers don't deal in percentages. They deal in multiplication factors (often expressed as what % larger you want the item to be, but that's not the same as multiplying by that percentage). In other words, you will enter that you want the photocopy to be 194.4% the size of the original. The machine will then enlarge the original by 94.4% producing a photocopy that is 194.4% the size of the original.

That's how dealing in percentages can get confusing.

[smittyrob64]

No it is 194% 1/18 is more than twice the size of 1/35, and the results of multiplying by 1.944 or 194% are exactly the same.

5mm x 1.944 = 9.72mm
now
5mm x 194% = 9.7mm
the same.

I don't know about photocopiers but if you increase 1/35 scale plans in photoshop by 194% you get 1/18 scale plans.

[aferguson]

lol......no 1/18 is not more than twice the size of 1/35. It's just under twice the size. 1/17.5 is twice the size of 1/35.

If you increase something in size BY 100%, you have doubled its size. If the stock market goes up by 100%, it has doubled in value. So, multiplying BY 194%, would nearly triple the size of the original.

What he wants is a photocopy that is 194.4% the size of the original 1/35 plans. But you don't multiply by 194.4% to make it that big. You multiply by 94.4% OR increase it by 1.944 times. Both are the same thing and will produce a photocopy that's 194.4% larger than the original, which is what he wants.

You understand what to do, but you're expressing it incorrectly.

[smittyrob64]

As I said I don't know the way you do it on a photocopier, and I didn't think he said anything about that. He just asked for the conversion rate, I assumed for taking his own measurments. So if he takes a measurment from a 1/35 scale model and mutiplies that measurment by 1.944 OR 194% he will get 1/18 scale measurement. And in Photoshop "increase image size" by 194% you get 1/18.

[aferguson]

oh i see. What photoshop is doing is the same way most photocopiers express it. But you are not increasing it BY 194%, you are increaseing it TO 194% of its original size (in other words it's 94% bigger or just under double the size). You are increasing it by 1.944 times but that's not the same as increasing it by 194.4%, which would nearly triple its size.

Like i said, dealing in percentages can get a bit confusing.

[snake]

Have you guys been having some New Years cheer a little early?

12 ounces for beer.

750 ml for wines.

Multiply as many times as you want.

[smittyrob64]

Yeah I guess, you put 194% in the box and I guess it scales it up accordingly.

And I see what you are saying in regards to scaling with a photocopier, I was still talking about scaling from measurements.

Like i said, dealing in percentages can get a bit confusing.

That's why I dont use a copier method, because it's really not confusing when you are measuring with calipers or a ruler.

[aferguson]

i got photocopier in my head because i've used them in the past, and that's what Pickel uses for his plans when he makes his customs. It is the same thing though, whether using a photocopier or photoshop, you are inputting your desired end size, expressed as a percentage but you are not increasing by that percentage, you are increasing to that percentage. The words 'by' and 'to' have a big difference in meaning, when talking about percentages.

[smittyrob64]

Yes, I should have said, in Photoshop type in 194% to increase to 194% instead of increase 194% by it's original size.

The words 'by' and 'to' have a big difference in meaning, when talking about percentages

Again I was talking about scaling measurments and you were talking about photocopiers.

[Beeavision]

Okay sooo.... now that we have that pretty much figured out.... can somebody here tell me how many licks does it take to get to the tootsie roll center of a tootsie pop?

[smittyrob64]

3.

[Jnewboy]

this thread is funny, Flyboy you should send yur 1/32 HE111 kit to Pickelhaube and beg him to double it for us....

Id buy one....

[aferguson]

to calculate number of licks you need to know the diameter of the tootsie pop, the diameter of the center part you want to get to and the surface area of your tongue that is actually licking (ie not the surface are of the whole tongue but just the part that will come into contact with the tootsie pop when licking it).

Then it's a simple matter of calculating the volume of the tootsie pop that must be licked away to reach the center. This is: (4/3 pie times the radius cubed) minus the volume of the center which is (4/3 pie times its radius cubed). Then divide that by the surface area of the tongue that is doing the licking and in actual contact with the tootsie pop. This would tell you how much of the tootsie pop has to be licked away to expose the entire center.

Of course if you were to suck on the tootsie pop then you would need to divide by the surface area of the mouth that is in contact with tootsie pop and that would be harder to calculate as it would probably vary a bit with each suck...unless you suck consistantly of course.

[ram04]

The " BIG QUESTION IS " what is flyboy up too

[flyboy_fx]

A jagdpanther, panther schmalturm, and an M3A1 stuart tank! All in 1/18 of course!!! I already have the plans drafted for the stuart!!!