The file is for a men’s size 9 last. You can make your own size with a little creativity. The .STL file can be scaled in X, Y and Z. While a technically perfect last grade is not made by direct scaling, this size 9 can be graded into a 8 or 10 without getting too far off the standards for last making.
If you have access to a decent sized 3D printer you can print this last full size in about 5 hours. We have a really slick MakerBot Model Z18 on hand so we tested the file.
We printed the sneaker last with 0% fill, 2 shells, and scaled to 275MM long USA size 9. With 0% fill the last is fragile but perfect for filling with expandable foam, casting resin, or plaster for a more durable last.
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