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Tutorial #2, Proportional Enlarging Calipers

Fun with Proportional Enlarging Calipers!

Imagine all of the HUGE sculptures you could make if you only had a set of Proportional Calipers…wait for it…We’re gonna show you how!!!

Update: By popular demand, we edited the video, and now we offer calipers for sale on! So make them if you can, buy them HERE at a discount if you can’t.

Tutorial Resources

Some of these links are affiliate links, which means that if you buy from them, We will get a small percentage of the sale at no additional cost to you. If you are uncomfortable with that, just type the words into Google or Amazon. We only recommend products that we actually use.

EDIT: Here is the link to Amazon to buy your very own Sculptor’s Apprentice made calipers! if you don’t have the tools to make your own set, or, if you don’t want to bother, click here and buy these. They are made right here in Kansas City, Missouri, so you can feel good about that too!

  • PDF File of the caliper printout can be found HERE. It will work at any size, 18 inches long is what we use. The holes for these scales:1X,1.5X,1.75X,2X,2.5X,3X,3.5X,4X,5X are included on the layout, and they will also work at any size.
  • Metal By The Foot These guys are in KC, they don’t sell off of their website, Bummer. You might be able to use these guys, but I haven’t tried them.
  • To make one set of Calipers you will need two (2) pieces of .080 aluminum at 3″ by 18.5 inches. (.080 is the thickness in inches, it is about 3/32’s fractionally.)
  • You will also need one (1) 1/4-20 X 3/4 long bolt
    and a 1/4-20 Wingnut
  • Here is the set of calipers that we had manufactured for you! If you can’t make a set after watching the tutorial, you can buy these at $25 less than the other stores. Also, if you are an Amazon Prime member (which you totally should be if you buy stuff online!) then you will have them in 2 days!
  • Super 77 Spray Adhesive
  • Bosch 7.0-Amp Top-Handle JigsawThis is the Jigsaw we use when we aren’t using the bandsaw.
  • Ridgid Oscilating Spindle SanderThis Spindle sander is such a good deal, we have two.

That should do it for all of the resources mentioned in the tutorial. You can buy the adjustable type calipers (mentioned at the beginning of the tutorial here. They will cost you about $25 more than these. As we mentioned in the video, if you sculpt with these, be VERY careful not to accidentally change the scale.

Proportional Calipers for sculpture will get you started quickly making bigger sculptures accurately, but if you want to go really big with your sculptures, you will eventually need to either have your sculpture laser scanned and 3d foam milled (not recommended!!!!) or you will need some other type of enlarging machine.

In a later post we will talk about why I don’t recommend 3d foam milling unless the client’s time line demands it, and we will also dig in to the hows and whys of our 2-3d pantographs. Yep, we have two. One of our pantographs is 14 feet long, will enlarge up to 7 feet tall and is shop built, and the other is 20 feet long and will enlarge at least to 10 feet, maybe more. We purchased it from Laran Bronze in Pennsylvania in 2013. But that is for later!

Leave us a note in the comments and tell us what the biggest sculpture you have ever made is!

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About E. Spencer Schubert
E.S. Schubert Sculpture Studios is the premiere bronze sculpture studio in the Midwest. Our passion is creating timeless bronze monuments of your heroes.


One Response to “Tutorial #2, Proportional Enlarging Calipers”
  1. Yon Regan says:

    OK, so why don’t you like foam milled enlargement? (at least as a starting point) I have been satisfied with the process and frankly have no experience with something like a point up so perhaps you can enlighten me.

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