Machine-Readable
Papa’s Best STL Thumbnails icon

And Clara — Renaldo

A shell extension that adds preview thumbnails for STL files to Windows Explorer. Runs on Windows 7 or later.

Can also be used with Total Commander and FreeCommander.

Papa’s Best STL Thumbnails displaying a folder with random STLs from thingiverse

Download

Updated (changes, license).

Feel free to donate if you like my program!

64-bit Setup

recommended

32-bit Setup

for old systems

Video Guide

Michael from Teaching Tech made a video guide about the installation. He was so kind to allow me to embed it here! Thumbnail installation starts at 1:49.

Fast

Thumbnail generation is based on the fastest STL viewer available. Folders full of STL files are no problem, and most STL thumbnails are generated as fast as those of JPG photos.

Free

Compatible

Papa’s Best STL thumbnail viewer displays countless STL variations, even where other programs fail:

Custom colors

a folder with thumbnails, their background purple and the objects mint green

Custom object color is ignored if the STL comes with embedded color information! Changes do not take effect on existing thumbnails until you clear the Windows thumbnail cache! This is a Windows limitation.

Via Papa’s Best STL Viewer

  1. download and run my STL Viewer (if you don’t want to install it on your system, choose the portable version)
  2. from the menu, select an object color via ViewSelect Default Material …
  3. select a background color via ViewSelect Default Background …
  4. clear the Windows thumbnail cache

Via registry (for advanced users)

For automation and easy deployment, the color settings are loaded from the registry key HKEY_CURRENT_USER\SOFTWARE\Papa’s Best. Create values according to the following table. If a value is missing, its default is assumed.

Name Type Default Meaning
DefaultBackgroundColor DWORD 0x00000000 Background color for thumbnails. Format is 0xRRGGBBAA.
DefaultObjectColor DWORD 0xffffffff Object color for files without built-in color information. Format is 0xRRGGBBAA. Transparency is not supported.
InitialEyeYawDegrees DWORD 28 Horizontal rotation of the viewer, in degrees. Positive rotates right.
InitialEyePitchDegrees DWORD 331 Vertical rotation of the viewer, in degrees. Positive rotates down.

Installation for all users

Papa’s Best STL Thumbnails installs for the current user by default. To install for all users on a system, open a command prompt or a PowerShell and run msiexec /i "Papas Best STL Thumbnails.msi" MSIINSTALLPERUSER="".

Repeat with every update!

And Clara — Renaldo

: For a more structural breakdown, this source explores how the film functions as a "love triangle" mirror of Dylan’s real life involving his wife Sara and ex-lover Joan Baez.

Finding a "solid paper" on Bob Dylan's 1978 experimental film Renaldo and Clara can be tricky because the film was largely panned by critics upon its release and has never been officially released on modern home media, making it a "cult" object for scholars and fans.

: This is considered a primary source "paper" or text where Dylan himself provides rare, candid insight into the film's intent, describing it as being about "identity" rather than a linear story. Renaldo and Clara

: This is one of the most famous contemporary reviews. While Maslin was critical of the film's length and lack of focus, her analysis is essential for understanding the "anti-movie" sentiment that met its release.

: Scholarly looks at the tour, such as the Scarlet Rivera interviews , provide "behind-the-scenes" data on how the filming was integrated into the daily life of the musicians. : For a more structural breakdown, this source

For a visual breakdown of the film's reception and its place among Dylan's career 'missteps,' you can watch this discussion: Dylan's biggest L? : r/bobdylan Alarmed-Patient-9268 Reddit• Jun 26, 2025 Renaldo and Clara: a synopsis - Literary Kicks

However, there are several foundational and academic-leaning works that provide deep analysis of the film's structure, which blends concert footage, documentary, and fictional vignettes. Key Critical and Academic Papers : This is one of the most famous contemporary reviews

: This article includes commentary on the freewheeling, improvised exchanges in the film, featuring screenwriter Sam Shepard’s influence on the "rambling" nature of the production. Contextual Resources


Dark background on some thumbnails

a folder with two thumbnails whose background is entirely black

Clear your Explorer thumbnail cache (see above) or copy the file to a different location.

This is a bug in Windows 10 that also affects other thumbnails – for example transparent PNG images here and here.

I can’t do anything in my program to work around it, I’m afraid. Please use the Windows 10 feedback function to report this to Microsoft. If enough users do it, they may eventually fix it. Windows 7 does not have this bug.


Something Missing?

Encountered a problem? Have a suggestion? Let me know: