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Scale and Diameter


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I am a noob at 3d modelling but want to build some simple KSP Parts.

After watching several tutorials i have still some questions.

If I want to make a size 1 part (i.e. FL-T100 Fuel Tank), which diameter do i use in blender? 1m or 1.25m?

Is there site where the length of the stock parts is listed? How long is a

60px-FL-T200_FT.png

FL-T200 Fuel Tank?

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If you're creating cylinders and the like, it'll ask for the radius. Here's the sizes:

Size 0: radius of 0.3125 (diameter 0.625). Note that blender will round that radius to 0.313 when adding cylinders.

Size 1: radius of 0.625 (diameter 1.25).

Size 2: radius of 1.25 (diameter 2.5).

Size 3: radius of 1.875 (diameter 3.75).

The lengths are tricky. For size 1 and size 2 parts, they're in increments of 0.9375 (the length of the FL-T200, or half that for the T100). I usually work backward from the Jumbo/Orange tank, which has an easy to remember length of 7.5m, or the FL-T800 with a length of 3.75.

Edited by NecroBones
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I've recently discovered that it's easier to work in a 1m scale and in Unity, in the Import settings of the model file, set Scale Factor to 1.25.

This gives nicer numbers to work with:

Size 0 Ø = 0.5m

Size 1 Ø = 1m

Size 2 Ø = 2m

Size 3 Ø = 3m

FL-T200 length = 0.75m

FL-T400 length = 1.50m

FL-T800 length = 3.00m

Orange Tank length = 6.00m

If you prefer to work in the final sizes right away, just multiply those numbers by 1.25 and refer to what Necrobones said.

Whichever way you choose, don't forget to add "rescaleFactor = 1" in your CFG.

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If modelling in the intended ingame diameter you must set the rescalefactor in the cfg to 1 (rescalefactor =1) otherwise it defaults to 1.25 which will scale your model by 1.25.

I also model this way. Takes away from the guesswork. Tip: after you created the cylinder you can scale it manually to outer diameter in the righthand menu. Useful when blender clamps the value for radius when creating the cylinder. Or just for rescaling a model back after tweaking it (dont forget to apply scale)

Edit: ninjaed by porkjet:P

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Why is that easier?
Really it's whatever's easiest for you. Some people find it easier to work with nice even numbers, which are then later rescaled to match the KSP sizes (1.25, etc)... as in the method you were just asking about. I prefer to work with actual ksp sizes in meters in blender. So when I'm extruding or offsetting or whatever, I know that .5 is indeed .5 meters in KSP. I just make sure that the scaling isn't messed with in unity or cfg files. It's a personal preference more than anything. (Although some modelling programs make snapping to nice round numbers much easier than snapping to odd KSP size numbers... which might be worth considering if that's your thing)
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