Having recently started pen spinning, you may find that unmodified pen is to off balance and the recommended custom pens are too complex and expensive too. Here is an article to fix that dilemma...the double eraser pencil.
Step 1

First take a unused pencil (if it is round it makes using it easier but harder to make) and take off the eraser and metal thing at the end (make sure the eraser has not been used) in one piece and set it aside.
Step 2
Take a second pencil (unsharpened) that is the same type as the last one and take a knife and carve off the corners at the end you would sharpen. Be careful not to cut to deep and only carve the first 1/3 of an inch. If your pencil doesn't have corners you might not need to shave the sides.
Step 3

Now that the pencil is carved try to fit that other pencil eraser on the end it should be a snug fit and if its to loose it wont stay on.
Now take off both off the erasers and put some super glue in the metal circle so that it sticks the pencil to eraser.
Step 4

Now you have a perfect spinning pencil.
Tips
- Now that you have a spinning pencil go learn some spinning tricks.
Color one end black or another eye catching color so you can know if its spinning properly. - Mark the center of balance so you know where to put your hands when you do tricks.
Warnings
- When your cutting the end be careful not to cut yourself.
- Don't get super glue on yourself. trust me its painful AND annoying
Things You'll Need
- Two unused pencils. (with erasers)
- a sharp knife.
- super glue.