[Noisebridge-discuss] Laser cutting layers of book pages.

miloh froggytoad at gmail.com
Sat Feb 9 21:55:15 UTC 2013


You could create a special jig for this single book project. Sounds
like a lot of fine work for a one-off.

You could do the work with a simpler cover holding & page holding jig,
and then invest a bit of design time instead, trying multiple passes
to cut the book without any adjustment to the fixture or jig other
than pass cleanup and automated or manual refocusing.

I'm thinking you could generate a cutting plan with multiple nestled
images of slightly decreasing size.  The step angle doesn't have to be
very great. Each cut pass will just cut through the optimum number of
pages depending on the laser optics.  Fasten or bind the book pages
extremely well, the laser works better in harder material where the
optics don't travel in free space or uneven distances.    The
sequential cuts occur slightly inside the previous ones.

The resulting cut will have a slight vertical bevel, which could be
unnoticeable really, the amount depends on the degree of shrink per
step due to consideration of the optics.

or why not try milling a filleted shape out?

On Sat, Feb 9, 2013 at 1:25 PM, Rubin Abdi <rubin at starset.net> wrote:
> Last night, not with Noisebridge's laser, I attempted to cut an alcove
> out of the center pages of a very crappy and deteriorating hard back
> book to fit some sort of pocket computer/phone like object. There were a
> lot of problems that I encountered.
>
> Specifically I could only cut a hand full of sheets before needing to
> flip back some of the already cut pages and refocus the laser. Cutting
> at a higher power/slower speed wasn't an option as the pages would
> easily catch on fire. While flipping pages back and taping them down,
> the alignment of the stack of pages I'm lasering would shift around (due
> to the spine moving) and so the cut out would happen at an angle, which
> sort of sucks if you're making a thing to fit a device snug.
>
> Anyhow, has anyone tried something like this before? Got any tips or
> tricks? The only solution I have right now is to rip the binding out (no
> easy task without destroying pages) cut layer by layer, rebind the whole
> thing.
>
> Thanks.
>
> --
> Rubin
> rubin at starset.net
>
>
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