What is a printable tube rack — and which insert do you actually need?
A printable tube rack is a tube holder you download as an STL or 3MF file and print on the FDM printer you already own — no $180 supplier line item, no waiting on lead times, no custom well sizes quoted out. BenchWerkz ships the file plus a shared backbone with swappable 9 / 16 / 81-well inserts, so the same backbone fits microcentrifuge tubes, cryovials, and serological pipettes.
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Why a printed rack wins
The $180 supplier line item, refactored as a file
The line item on your lab budget is real. The cost-versus-time trade is not — a BenchWerkz file replaces the SKU, prints on the printer you already own, and adds three sibling sizes that the supplier doesn’t sell in this family.
Print one rack today. Print twenty next month, in the same PETG spool, on the same printer. The line item in your lab budget stays flat.
The rack family
Swappable inserts in the rack family
Three printable tube rack inserts to start — 9-well microtube, 16-well mid-density, and 81-well cryo sibling. Each card links to a spec sheet in the BenchWerkz catalog. The rack family is growing, and additional sizes land over the coming months.
Family · Pipette racks
BenchWerkz Rack MK2
A 9×9 microtube rack with indexable lid — prints support-free on 0.4 mm FDM in PETG.
Open the rack spec sheetFamily · Cryo organizers
BenchWerkz Cryo 81
An 81-well cryovial box dimensioned for −80 °C workflows and stackable bench storage.
Open the cryo spec sheetFamily · Pipette stands
BenchWerkz Pipette Stand
A serological-pipette stand for 1–25 mL pipettes, with a magnetic base for bench mounting.
Open the stand spec sheetGet the file
Replace the rack line item with a file.
Email us for a custom dimension, a lab-seat quote, or a family that isn’t in the catalog yet. BenchWerkz ships the day your order is placed.
WHAT YOU GET
STL + 3MF download
One-time, single-digit dollar download. Both file formats ship together so the file you choose matches the slicer you already run.