The Sizes of Standard Biscuits
| Size | Metric Biscuits † in mm (L x W x T) | Inch Biscuits † in inches (L x W x T) | Notes |
|---|---|---|---|
| #H9 | 38 x 12 x 3 mm‡ | Uses a smaller cutter wheel 3 mm wide. | |
| #0 | 47 x 15 x 4 mm‡ | 1-27/32" x 5/8" x 19/128" | Standard cutter width is 4 mm or 5/32". |
| #10 | 53 x 19 x 4 mm‡ | 2-1/8" x 3/4" x 19/128" | |
| #20 | 56 x 23 x 4 mm‡ | 2-3/8" x 1" x 19/128" | One source uses 2-1/4" for length. |
| S6 | 85 x 30 x 4 mm‡ |
† Biscuits may also be referred to as plates (as per the Lamello website).
‡ These data require clarification because the standard cutter width is 4 mm thus requiring the biscuit to be thinner. It is more likely that the thickness is 3.75 mm which would correspond well to the typical inch thickness (19/128" = 3.77 mm).
Note: The mm sizes were taken verbatim from the Lamello website. The inch sizes were taken verbatim from an article on plate joinery published in The Woodworker's Gazette several years ago. In general, the sizes appear to be consistent with each other given the typical tolerances used in woodworking. The usual caveats in dealing with tools and materials destined for US or European use are to be observed, of course. The most commonly used inch sizes used are #0, #10 and #20 hence their exclusive listing.
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