fine art

home & garden


work in progress


3-d printer
ahp tools
engineering kinetic sculpture
everlast tools
finish work & patinas
focus on art
how to create a sculpture
longevity tools
milling machine & metal lathe
public art
shop math: measuring & leveling
studio tour
tools for the studio
transporting & installing videos
arc welding
bending & shaping
cutting & grinding
general welding
health & safety
mig welding
other techniques
specific projects
tig welding
tool how-to's

  * How to Roll Metal in Small Diameters
  * How to Make Your Steel Different Colors
  * Why Is my TIG Tungsten Tip Blue? (and What to Do About It)
  * How to Easily Tack Aluminum When TIG Welding
  * Announcing our Contest Winners!

more ...

"I checked out the vine fence on the Web site. It is both simple and intricate and incredibly beautiful! It must be so fulfilling to create such strength and beauty."
--Ann McCommas, Director, AIM Motivational Seminars, Tempe, Arizona

Bookmark and Share

< Back
Next >

Shop Math: How to Find the Center of Anything

The Voice: Hey, Kevin. What are you doing?

Kevin Caron: I'm wondering who cut this piece of metal. It starts out at 8 inches on that end and winds up just shy of 8 and a half on this end. Must've been me.

How do you find the middle of something?

The Voice: I don't know.

Kevin Caron: You can measure it with your ruler. You can measure across; come half over. But what do you do if you've got a weird measurement like 8 and a 16th? The answer would be four and a 32nd, but it's really hard to mark a 32nd.

When you get down in here and you've got just shy of 8 and a half; how do you find that middle? How do you find the middle quickly?

The Voice: I don't know, but I hope you're going to tell me.

Kevin Caron: Measure diagonally. Zero to, let's say, 10 inches. Mark it at 5. Hit it right in the middle. It works down here; even though this is 8 inches and this is 8 and a half inches, you can do the same thing down here on this end. Zero to 10. Mark it at 5. You're right in the middle.

The Voice: Does the diagonal matter?

Kevin Caron: No. It doesn't matter what diagonal you have on your piece of metal. It doesn't matter what numbers you use, as long as you can go to the middle. You know: Half of 10 is 5, half of 20 is 10. It doesn't matter. It doesn't matter how wide it is.

It speeds things up. You don't have to do high math; you don't have to sit there and figure out what half of a 32nd is and then try to find that little tiny line. You can just work with the big lines.

It's real quick; real easy. Back to work on my contemporary art sculpture!

Watch more videos now