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

2nd Gen - Glass platen, switch/power hub

Built a scanner? Started to build a scanner? Record your progress here. Doesn't need to be a whole scanner - triggers and other parts are fine. Commercial scanners are fine too.
you1
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Joined: 04 Mar 2014, 00:53

Re: 2nd Gen - Glass platen, switch/power hub

Post by you1 » 25 Jul 2009, 03:41

Thank you - that's much simpler.

bkrpr
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Joined: 04 Mar 2014, 00:52

Re: 2nd Gen - Glass platen, switch/power hub

Post by bkrpr » 30 Sep 2009, 15:12

Wow, that electronics work looks amazing. I would certainly love to have a single button to push on my rig.

In terms of your planten, I noticed that you have the main pieces meeting in an |_ fashion in the center. When I have tried similar setups I always get asymmetrical join lines in my pictures, where the joint is visible only on one side of the page, the side which sits on top of the other piece at the joint.

I believe you can avoid those issues by having the plastics shop bevel the two relevant edges at 45 degrees so the joint is right in the middle of the book's spine, but I haven't finished putting together a rig based on that yet. Are you also seeing the joint creep into the margin on one side? I' love to hear about how it's going.

-Ian

you1
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Re: 2nd Gen - Glass platen, switch/power hub

Post by you1 » 30 Sep 2009, 16:07

Hi Ian,

I need some more clearification, for I am unable to visualize what you are refering to
the main pieces meeting in an |_ fashion in the center
When I have tried similar setups I always get asymmetrical join lines in my pictures
Where do you see asymetric lines?

"plastics shop bevel the two relevant edges at 45 degrees "
I don't know if we need to bevel the glass!
glass_platen.JPG
glass_platen.JPG (10.42 KiB) Viewed 6367 times
The glass is 3/16" thick, which satisfys the books with even closest margins.

spamsickle
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Re: 2nd Gen - Glass platen, switch/power hub

Post by spamsickle » 30 Sep 2009, 20:03

What I did is just put a square "bumper" at the point where the panels meet. Each pane of glass has its edge against the bumper, and both views are symmetrical.

you1
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Joined: 04 Mar 2014, 00:53

Re: 2nd Gen - Glass platen, switch/power hub

Post by you1 » 01 Oct 2009, 12:40

I thought about going back and putting transparent silicon caulking (for kitchen/bath) just for good measures; however, after number of usages, I haven’t noticed anything that would compel me to go back put any kind of cushion/glue between the glass edges.

As you can see in the below image, there is nothing between the glass edges
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Aibo
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Re: 2nd Gen - Glass platen, switch/power hub

Post by Aibo » 22 Oct 2009, 09:35

Are those Google SketchUps of your Glass Platen? Would you be willing to share? I would like to do similar, just a little larger (38 cm or about 15''). Thanks in advance!

you1
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Re: 2nd Gen - Glass platen, switch/power hub

Post by you1 » 22 Oct 2009, 12:10

Yes, they are google sketchup, and I'll post them tomorrow (not with me at the moment).

Best,
Edvin

you1
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Re: 2nd Gen - Glass platen, switch/power hub

Post by you1 » 23 Oct 2009, 20:00

See attached...
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scanner.zip
(661.21 KiB) Downloaded 502 times

Aibo
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Re: 2nd Gen - Glass platen, switch/power hub

Post by Aibo » 23 Oct 2009, 22:00

Edvin ... you rock! Thanks so much.

Prototyping with cardboard today and visiting the local window glass shop later this afternoon for some more help. Over here they build out custom windows and sliding doors on the street for the high rises. Living in China gives me access to some unique resources, let me know if you ever need a favor in return!

you1
Posts: 92
Joined: 04 Mar 2014, 00:53

Re: 2nd Gen - Glass platen, switch/power hub

Post by you1 » 24 Oct 2009, 02:44

wow, that is a kind gesture.
tnx

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