Please use real names.

Greetings to all who have registered to OPF and those guests taking a look around. Please use real names. Registrations with fictitious names will not be processed. REAL NAMES ONLY will be processed

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We are a courteous and supportive community. No need to hide behind an alia. If you have a genuine need for privacy/secrecy then let me know!
Welcome to the new site. Here's a thread about the update where you can post your feedback, ask questions or spot those nasty bugs!

The tool

This photo was made a long time ago but I always liked it.
The light was coming through a piece of glass on the roof of this warehouse.

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