Hello everyone! I am working on the design of the glass frame of a solar collector and while connecting the frames at the corners seems to follow a standard solution (the frames meet at a 45 degrees cut, and we fit the corner piece in the inside frame channel and then most likely stamp it) I don't seem to find any specification for this kind of connecting profile. Do you know where I could find specifications for this profile, as they should be standardized I imagine. (I have checked a few manufacturers - Sapa, Frame World, Bosch, 8020, etc but I didn't find anything) The frame is made of Aluminum, and the thickness of this corner piece should be 5mm (the frame channel width) with a little extra for the sharp teeth on the inside surface that are there to prevent it from sliding inside the frame channel. So I don't know how the design for that surface should be - what should be the depth of the teeth, their exact orientation size and such. How much should the teeth come out in relation to the width of the profile (5mm in this case)? Right now they exceed the profile with 0.5 mm but that's just "by eye". I do hope my link works, you can see a an image of how this piece would be like. http://s1374.photobucket.com/user/gia-photo/media/CornerPiece_zpseff93998.jpg.html If this is not very clear (I know it might be clearer in my head!), please let me know and I can clarify. It's my first time on this forum, thank you in advance!