This print can be modified to choose any number of rows and columns (but you will need an OnShape account to do this - free OnShape accounts are available). In addition, I have included a number of different row/column combinations here, so you can simply download those if they meet your needs.

These are made to fit 2ml vials with a diameter of 16mm and a height of 35mm (see photos). If you would like to test fit, or scale to a different size, I have included a “1 row 1 column” version for test purposes.

Note : I have no affiliation with OnShape, other than as a hobbyist user of CAD. 

Print Instructions

Print in PLA  :

• 0.2mm layer height
• 2 perimeters
• no infill

CAD

The OnShape 3D CAD files for this are here :

https://cad.onshape.com/documents/16d66c5b95fd851ad9e11f49/w/ee380273f1104b33aad38f26/e/55e6ac3af474f2b3d3db63d4?renderMode=0&uiState=6762e8bdcefd6f6e6230f648