Giá đỡ pipette xoay kèm mô hình xoắn DNA, có thể tùy chỉnh

This is a rotating pipette holder/stand with (or without) surrounding DNA helix and with (or without) your own logo. It has many customizable parameters and can be adapted for various pipette types.

Materials (BOM)

• 1 x deep groove ball bearing, 30 mm inner diameter, 42 mm outer diameter, 7 mm bore double sealed chrome steel (configurable in OpenSCAD file)

• 1 x M4 screw and nut (configurable in OpenSCAD file)

• optional: 4 x magnets for DNA helix connection (configurable, not in default model)

How to connect the printed parts

For printing the model is splitted into three parts: foot, lower tower and upper tower. 

1. The foot and the lower tower are attached by the ball bearing.  First attach the ball bearing to the lower tower:

2. The central lock between lower and upper tower needs the screw and the nut:

3. Now connect the lower tower with the foot:

Customize your pipette holder

The current model is designed for ONILAB pipettes, but can be configured for various pipette models by adapting the variables in the code file. The parameters/settings can also be adapted by using the OpenSCAD Customizer (no programming skills required) in the given OpenSCAD file. To getting started with the OpenSCAD Customizer install and start the OpenSCAD CAD Modeller and open there the OpenSCAD file below.  The Customizer functionality can be activated by Window → Customizer in the menu.

In this section some of the adjustable parameters are shown, but there are many more settings available in the OpenSCAD file. For example you can adapt the number of pipettes, the DNA helix twist and nucleotides configuration and much more.

Select a pipette holder design

You can choose between two different pipette holder designs: the hook design and the knob-hanger design. By using the OpenSCAD Customizer the design can be selected in the Global paramters section, and the design specific parameters can be adapted in their corresponding section ("DESIGN HOOK: UPPER PLATFORM SETTINGS" and “DESIGN KNOB HANGER: UPPER PLATFORM SETTINGS”).

This is an example of the hook-design and the corresponding OpenSCAD Customizer settings:

And this is an example of the knob-hanger-design:

Add your own logo / picture

For this you need an .svg file of your logo/pic. Set the path to your .svg-file in the OpenSCAD file directly (line: 87) or by using the Customizer:

The position of the logo can be adapted by changing the "logo x shift" and the "logo y shift" paramters. The "logo h" parameter adapts the depth of the logo.

Parameters which can be switched ON/OFF

These parameters are checkboxes in OpenSCAD Customizer or boolean values in the code file.

parameter name

description

default

with_leaning_edge

for the hook design only; adds or removes the hanging leaning edges for each pipette slot

ON (true)

with_dna

adds/removes the DNA helix

ON (true)

with_nucleotides

allows to show or hide the nucleotides inside the DNA helix

ON (true)

with_magnets

add or remove the magnet slots for the central connection of the two DNA helix parts

OFF (false)

bilateral_nucleotides

add nucleotides to one or both sides of the DNA helix

ON (true)

with_central_screw

use or not use a screw for the central connections of the two holder towers

ON (true)

with_logo

add or not add a logo on the top area of the upper tower

ON (true)

Other parameters

Many other parameters can be configured in code or OpenSCAD Customizer. For example the leaning edge flattening in hook-design can be turned off if the variable leaning_edge_border_cutoff_angle is set to 0 degrees (this is default).