Machine-Readable
Papa’s Best STL Thumbnails icon

Ancel X7 — Software Download

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:

Ancel X7 — Software Download

If you want, I can outline the exact update steps for an X7 (Wi‑Fi vs. USB) or draft an email/template to Ancel support if you hit a failed update—say which you prefer.

The Ancel X7 sits at an interesting crossroads: ambitious hardware and pro-grade features wrapped in a user-friendly package, but its real-world value hinges on software—how you get it, how often it’s updated, and what those updates actually add. Here’s a sharp take on the X7 software story with concrete examples and practical takeaways. Ancel X7 Software Download


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!

If you want, I can outline the exact update steps for an X7 (Wi‑Fi vs. USB) or draft an email/template to Ancel support if you hit a failed update—say which you prefer.

The Ancel X7 sits at an interesting crossroads: ambitious hardware and pro-grade features wrapped in a user-friendly package, but its real-world value hinges on software—how you get it, how often it’s updated, and what those updates actually add. Here’s a sharp take on the X7 software story with concrete examples and practical takeaways.


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: