"Scaling up from 15mm?" Topic

Hi all, friend of mine is going to try and 'scale up' some 15mm WW2 tank designs to 28mm for me.

I've been reading the size increase should be 200%, is this correct? They need to fit in with the Warlord Games vehicles I plan to buy to round out the collection.

We're very new to this 3D punting caper, so many thanks for any help :)

If the figures are really 28mm then I'd recommend 28/15=1.87 which is 187%.

Alternatively 15mm is 1/100 scale and 28mm is 1/56 or 1/58 so the scaling is 100/56 = 1.786 or 100/58 = 1.724

Thanks guys, much appreciated.

I am going to recommend you do something totally different. Load the 15mm file into your slicer. then look up the vehicle on Wikipedia or some other armor reference. Note the width of the actual vehicle. Decide if you are going to go the 1/56 or the 1/48 route. There are proponents of both scales. Convert the width to mm and divide by either 56 or 48. Then divide by the width of the 15mm model and enlarge by that amount.

I use 1/56 and have enlarged in ranges from 170% to 190% depending on the accuracy of the original file.

Thanks Joe, you make a good point. Particularly in regards to the accuracy of the original file. In the end I don't know the guy who created it nor how high a value he places on accuracy.Food for thought.

Any one of these answers should work. How important is accurate scaling to you? That will determine what you want to do with scaling.

Very true. In the end what's most important to me is they scale accurately with the Warlord Games tanks that make up the rest of the collection, and will make up future purchases.

So, if we print a SU-152 it's the right size, say, comparative to the Stuart I already own.

All good answers since neither 15mm or 28mm are really scales. Waco Joe's answer of looking up the actual width and scaling up/down accordingly is the one I use. The most important thing in my book is making all of the vehicles of the same type the same scale – it is okay for your Stuarts to be slightly different scale than your Shermans but if you have two Shermans one scaled up at 187% and one at 172% it will look out of whack (unless you put them in different units…)