Why I'm asking
Where it goes
Filament, hosting, domain
Every percentage on this site got printed and measured with calipers before I published it. PLA spools, test pieces, and the hosting bill are what a tip actually pays for.
What you get
Exactly what everyone gets
All of it — every calculator, guide, and dataset, free, with nothing behind a login. Your tip buys nothing extra because nothing is locked. Non-tippers and tippers get the same site.
How private
Wallet to wallet
No form, no email field, no account, no payment processor asking for ID. You send from your wallet, I receive in mine — I learn nothing about you beyond what any public blockchain transaction shows.
Send a tip
Bitcoin (on-chain)
For larger tips — confirms in about 10 minutes
bc1qnlrx0hn79ld08k0r90zl3fks29ztym9g866fcpCheck the first and last characters after pasting — wallet software mangles long strings more often than any of us would like.
The small print
No perks, no receipt, no promise
A tip is a tip: no tiers, no members-only content, no future obligations from me, and no refund path on-chain. I can't attribute a payment to you unless you tell me yourself — and I don't need you to. What I do with the site regardless of donations is written down in the Terms and Privacy Policy.
Free ways to help
Costs you nothing
- Embed the converter on your blog or wiki — it links back to me and stays free to use.
- Found a wrong percentage? Send a correction — fixes come from the community.
- Tell one person whose proxies keep coming out the wrong size.