Chainsaw Repair

The plastic or the air gap tool both survive a little longer than the business card, after one use the card gets compressed in the areas of the coil poles, so too do the plastic and the air gap tool just not as quickly. McMaster Carr also sells precision plastic shim stock, their product 9513K21 is 0.0125 +/- 0.0006 (0.0119 to 0.0131) a 5x20 inch piece will cost you $3.57. I don't think you are going to get any closer than this.

http://www.mcmaster.com/#shim-stock/=qog22r
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There's one more thing to add to my next McMaster Carr order.  Can make about 20 gap tools out of that 5"x20" piece of plastic shim stock.  Lifetime supply....
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Been using it for several years.  Works great!
Shep

Erik, you are right on the metal shim, however you might think about some type of metal that would not be attracted by the flywheel magnets, perhaps copper, aluminum or brass. On second thought perhaps not aluminum it is too soft and would mar easily throwing off your gap.

Good thought, SS never even crossed my mind! Give it a try, let us know how it works! Only 18$, not bad Erik, not bad at all. I used to have a long reach feeler gauge that was used for what I can't remember but it had leaves about 6 inches long and I am sure they were SS. If you could find one like that perhaps you would save some time and money.

I bought a sheet of copper shim stock when I bought the plastic.  Like the plastic much much better.
Shep

The plastic off a Danonn yogurt cup mic'd out perfect.... wife's yogurt...I am much too manly to eat yogurt from a little cup