I backup the whole / with borg

It has insane deduplication and compression and it creates a structure kind of like git, so you can have lots of incrimental versions without using much space.

Nobody wants your opinion on it either, yet here we are, getting both.

It does sound like one, but it isn’t. Ignoring the differences in UX:

Passkey

• Per-service key pair, unique per domain, Identity bound only to that specific account on that site
• Challengeresponse via WebAuthn
• Trust anchored only in the target service (no external CA)
• Private key sealed in OS / secure hardware keystore

Certificate login

• Single global identity usable across many services
• TLS client authentication with certificates
• Trust established via certificate authorities and chain validation
• Private key stored in exportable file or smartcard

I think OP is talking about auth in services that you selfhost.

For example elster.de forces you to sign in with one of the many passwordless methods, which includes: entering a username and uploading a cert file.

But most selfhosted services only have username/password logins (if any).

https://www.cadsketcher.com/

CAD Sketcher is a free and open-source project that adds constraint-based sketching and parametric modeling to Blender.

I used wheel balancing weights (tiny 5g iron bars) and built them into my prints.

They are pretty cheap and the included adhesive makes it so they don’t rattle around inside if the tolerances of the cavity are not perfect.

Used them in the base of a tall slim model to make it less prone to tipping over.