Advice for appropriate joint or fastener

[twan_peeters]

I have never worked with joints and/or fasteners, and I was wondering if someone could point me in the right direction of what type of connection I would need? Apologies for the wonky animation, hah! I need these to print these two plastic flats in PETG, and I want them to be able to fold onto each other. I am open to external connections (metal), but ideally printed ones would be easier.

Screencast link for animation reference: https://autode.sk/2ONc5vA (I can never seen to embed them, I always get an HTML error. Frustrating!)

The fastener should not be bigger higher than the flat itself, as the flats will be used as guides for rolling out clay and help it into the right thickness. The height therefore of the connection should ideally be the same as the flats (2.5mm).

I am needing a connection because the surface of the printer (Prusa Mini) will not be big enough to print the length I require, hence my idea of connecting two flats together.

[TheCADWhisperer]

That would be expensive flat sheet.

I would go to the hardware store and find something.

[twan_peeters]

@TheCADWhisperer what do you mean? The reason I'm going for 3D print is because I need many different thicknesses: 2.3mm, 2.5mm, 2.9mm, 3.5mm. Ofcourse, I can get some flat wood sheets from a hardware store, but there would be so much wood waste and it is difficult to source them to the exact diameter I need.