Bob,
If the window size is reasonably sized, the easiest technique may be to not frame the window as the wall is built.
It is an extremely simple matter to build a solid wall without any window opening. After the wall is completely dry, get out your chainsaw, or maybe a reciprocating saw with an extremely long blade, and cut out the window opening. Don't hesitate to rough cut the opening a little small and then gradually cut the opening larger to get a perfect size. Then place your window buck into this perfectly sized opening.
Of course... this technique makes a few assumptions. Your cured/dried papercrete mix needs to be something that is practical to cut with a chainsaw. Some papercrete mixes will destroy a chainsaw chain. It all depends on how much sand and stuff is in the mix.
You also might be able to use a circular saw with a wood or with a masonry blade. Use whatever makes sense for your papercrete mix. You'll probably need to cut the opening from both sides of the wall. Pre-drilling the corners of the opening (assuming rectangular window) would be needed to place the cuts correctly to match the inside and the outside of the wall.
Of course... if the window or door opening is too large, this technique becomes impractical.
--- In papercreters@yahoogroups.com, "Bob" <criswells.ok@...> wrote:
>
>
> Seems like somewhere on some site I saw someone embed a window into PC.
> This wall that I am building should have a window in it, but I hate to
> set 2x6 wood bucks and then install a square or rectangle window into
> it. I was hoping to design a round PC frame for both sides of the
> window, total width would be 6" to fit into the form tight and then
> place the square or rectangle window with the PC round opening frame on
> to the wall at the heights I want the window and pour around the window
> and PC frame. The window is insulated and I can't remember if it is
> square or rectangle but it does not have a window frame around it, it is
> just a replacement window I guess, can't remember where I came up with
> it. But my question is, can this be done without breaking the window
> when the PC sets up?
>
> Bob
>
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