Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ

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by daniel_reetz
15 Nov 2017, 19:49
Forum: Chat
Topic: TechShop is Dead, Long Live TechShop
Replies: 0
Views: 5853

TechShop is Dead, Long Live TechShop

https://www.solidsmack.com/cad-design-news/facing-bankruptcy-techshop-sadly-closes-14-locations/ Around the time I started work on the Hackerspace Scanner, I moved to Richmond, CA and started working at the Internet Archive. A bit of publicly-untold history is that I first tried to make the scanner ...
by daniel_reetz
15 Nov 2017, 19:14
Forum: Scanners and Build Threads
Topic: Archivar - wooden scanner based on Archivist
Replies: 23
Views: 15989

Re: Archivar - wooden scanner based on Archivist

Makes sense to me. I like the idea of camera alignment marks on the frame - in my case, I painted the frames after they were laser cut so it was not economical. One suggestion was to use stickers instead of laser marking. When this project was started, 3D printing at the hobbyist level was pretty cr...
by daniel_reetz
13 Nov 2017, 16:09
Forum: Help with this site
Topic: Archiving the Forums?
Replies: 8
Views: 123772

Re: Archiving the Forums?

This is an important topic - and one dear to my heart. There is one important consideration which is that we need to be careful backing up/sharing the databases directly, because people's private messages and other stuff are in there. jlev, did this discussion ever go further? Do you want to help ou...
by daniel_reetz
11 Nov 2017, 20:15
Forum: Introductions and connections
Topic: Hello Everyone, Greetings
Replies: 1
Views: 4331

Re: Hello Everyone, Greetings

Greets and welcome!
by daniel_reetz
11 Nov 2017, 20:00
Forum: Lighting
Topic: Flat fields to correct for uneven illumination -- has anyone tried this?
Replies: 3
Views: 3753

Re: Flat fields to correct for uneven illumination -- has anyone tried this?

Yeah, in the very first scanner, Aaron Clarke and I would take a picture of a blank piece of paper, and then subtract the inverse of that from the page image. It works, as long as your cameras have fixed settings and the camera-platen relationship doesn't change. If it changes at all, you need a new...
by daniel_reetz
11 Nov 2017, 19:56
Forum: Scanners and Build Threads
Topic: a small story for my scanner
Replies: 59
Views: 32116

Re: a small story for my scanner

It's always great to see examples of people going through the full process like this.
by daniel_reetz
11 Nov 2017, 19:54
Forum: Scanners and Build Threads
Topic: Archivar - wooden scanner based on Archivist
Replies: 23
Views: 15989

Re: Archivar - wooden scanner based on Archivist

Paperback mode is, i think, a term danielreetz brought up. It was intended to help scanning paperbacks which accidentally close whenever the cradle is lowered. One can turn the whole Image-Module upside-down to have the glass pointing upwards. That enables you to take paperbacks and scan them face-...
by daniel_reetz
05 Oct 2017, 22:32
Forum: Scanners and Build Threads
Topic: Archivar - wooden scanner based on Archivist
Replies: 23
Views: 15989

Re: Archivar - wooden scanner based on Archivist

Congratulations on your design and the release of your scanners!

I've never heard of tool balancers before - they look like the perfect solution to the weight issue. Like you said, I can see them applied to many different things.

What's your web address?
by daniel_reetz
18 Sep 2017, 12:45
Forum: Scanners and Build Threads
Topic: Which one is better? Platen's angle 100 or 90 degree?
Replies: 30
Views: 8752

Re: Which one is better? Platen's angle 100 or 90 degree?

I think you'll have a real problem containing the light to just one of the platen panes. This is the problem, as I see it. But it's still worth trying. A simple way to test the idea (if you have the gear) is to set up a digital projector (like a pico projector) and display an all-white image. Then ...
by daniel_reetz
13 Aug 2017, 10:19
Forum: Scanners and Build Threads
Topic: The "Non-Destructive Guillotine" ("NDG") Scanner
Replies: 7
Views: 10925

Re: The "Non-Destructive Guillotine" ("NDG") Scanner

Good to see you 'round these parts, jlev!