Propagation test tube stand — PropagationArc | STL + STEP | JLF-221

Hold three glass propagation tubes on a tabletop. Different column heights and open windows expose the glass. DIMENSIONS Three bores Ø26.4 mm; tubes must be under Ø26 mm and reach the floor of each holder. DIGITAL DOWNLOAD — ONE PRODUCT 1 STL part(s), matching editable STEP solids, standalone CadQuery source, two CAD views, printing and assembly guide, dimensions and validation report. No physical object or props included. USE Use your own glass tubes with water. Printed shell is not a water ve…

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