Imports Thangs models, likes and collections, and syncs them. Metadata is
public; files need the user's own sign-in, which Thingport Grab sends and
Thingport renews from the refresh token. Paid models download once owned;
print-only ones are refused before any download. Free accounts' daily
download limit stops a batch and defers the rest of a sync to its next check.
Thingiverse's Cloudflare now challenges every request whose TLS handshake
isn't a browser's, whatever the headers or cookies, so file downloads,
preview images and API calls all failed. Route all thingiverse.com
requests through impit, which impersonates Chrome.
Tautvydas Derzinskas