Mast Slug Drilling block (Fits Tack Tick compass mount.)
thingiverse
To align a drill bit for drilling mast slug holes, use a Mast Slug Drilling block that precisely positions three holes in a 3/8" x 2+" aluminum bar-stock piece. Ideal for mounting tack tick compasses, this block is particularly useful when you've misplaced the original slug. When 3D printing the replacement slug with a Replicator 2, adjust the settings to increase shells from 2 to 4 for extra strength. After printing, drill the main clamp hole with a 3/8" drill and tap the top holes with an 8-32 tapping drill to ensure proper fit. The two crosswise 1/4" holes in the block are for clamping it to the aluminum bar. A convenient, customizable solution for creating mast slugs!
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