## Step 1: Materials

## Step 2: Make your mark

## Step 3: More Lines

## Step 4: Complete your set

You can make as many sticks as you want, especially if you want to multiply pi to 12 places. If you do have duplicate digits in a factor, make sure you have enough rods. You can always use the back of a stick.

## Step 5: How to use them

Example: 9 x 314 = 2 1000s + 8 100s + 2 tens + 6 ones.

## Step 6: Further exploration

**Signing Up**

first 9*314=2826 insert a zero behind because you actually want to multiply with 90 then you have 28260 then you do the 7 7*314=2198 then you add your two results 28260+2198=30458

Unless for amusement's sake I guess I won't be making one of these anytime soon as I can already do the single digit multiplication easily in my head.

Wikipedia: "In addition to his mathematical and religious interests, Napier was often perceived as a magician, and is thought to have dabbled in alchemy and necromancy. It was said that he would travel about with a black spider in a small box, and that his black rooster was his familiar spirit."

http://en.wikipedia.org/wiki/John_Napier

http://en.wikipedia.org/wiki/Napier%27s_bones

Now show us how to do the cool lasered ones! Thanks again.

Drawing the diagonals freehand is easy, but I'm sure making the other lines could be speeded up. I could also see multiple sets being made by silk screening, printing, or stenciling.

Liz said that she'd be happy to make an Instructable, but not this week as she's preparing a TedX.

Regardless, what you call them, a nice instructable!

I'd be nothing if it wasn´t for multiplying tricks: www.instructables.com/id/Tables-of-6-7-8-and-9-in-your-hands/