Depending on what you are shimming here are a few options. 1. home depot or lowes actually sell different sized shems according to there thickness just ask someone in lumber and they should be able to direct you to them. 2. your guitar picks come in all different thickness's so you can cut and trim them to the size you need to shim whatever your working on.
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Depending on what you are shimming here are a few options. 1. home depot or lowes actually sell different sized shems according to there thickness just ask someone in lumber and they should be able to direct you to them. 2. your guitar picks come in all different thickness's so you can cut and trim them to the size you need to shim whatever your working on.