Parametric handle
thingiverse
You can fine-tune the mounting hole distance by adjusting the "interaxes" parameter to suit your preferences. This will automatically change the handle size accordingly. Next, you'll want to tweak the "handle_size" parameter to achieve the desired proportions. The other parameters control the dimensions of the mounting holes themselves. To ensure optimal results, start by tweaking a parameter with a low "quality" value (32) and then gradually increase it up to 128 for the final rendering.
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With this file you will be able to print Parametric handle with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Parametric handle.