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Baluster Drill Jig

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Workshop & Toolsdrill-jigbalusterwoodworkingcenter-findertoolsworkshop3-8-bore
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Description

A precise drill guide for 1.375-inch square balusters. Centers a 3/8-inch bore perfectly in the end grain.

Features an open-corner skirt that drops down two inches to grip the baluster on all four sides, ensuring plumb alignment while letting you easily verify the jig is seated fully against the wood. The center windows in the tabs save print time and reduce material waste.

Printing Fitment

The internal bore is modeled with clearance for a 3/8-inch bit so it spins freely without melting the plastic, and the skirt has 0.5mm total clearance to slip cleanly over milled lumber. Measure your balusters before printing — milled dimensions can vary depending on moisture and the lumber yard.

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