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ToolMeister t1_is1e4il wrote

If you ever want to replace the window, dados in a glued frame will make it impossible to reinsert a new piece.

You could just scrap the dado idea, build your cross and hold the glass in place with trim.

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MaybeYouHaveAPoint OP t1_is1ex3v wrote

How would you build the cross? Make each line two pieces, one on either side of the plexi? I like the idea of being dismantle-able, but I think it would add to the price tag. Trim is kind of crazy expensive these days.

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ToolMeister t1_is1fu4h wrote

Make the cross out of 2x2 and lap join it in the center. Then nail trim to all the inside faces on one side, insert glass, repeat trim on the other side.

Oh and when I say trim, doesn't have to be fancy trim, you could just rip your own square trim from scraps on the table saw. It's just a shed afterall.

Seal the plexiglass to the trim with a thin bead of clear silicone and it won't rattle and eliminate any drafts

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MaybeYouHaveAPoint OP t1_is1g6da wrote

Yeah, I'll sketch it out and maybe try that, thanks.

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jeffersonairmattress t1_is33cga wrote

Traditional windows this size would use a nominal 2x2 muntin but with a profile done on a shaper. They would not be dadoed and built around the plexi becasue that way you can't replace the panes; they use a rabbet and stop or putty instead. The vertical of the cross gets a 90 degree notch both sides, as does each inner edge of the outer frame where it meets the ends of the "cross." The ends of the cross are pointed 45 degrees each side to register in the four notches. It's a very strong construction, simple on a tablesaw.

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mikeisboris t1_is2m74z wrote

If you don't want to use trim, you could use points and window glaze. It's really pretty easy to do and is how almost all windows used to be done.

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