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design and produce a device simular as you can see enclose.
this is for insert with pressing and head metall hinge in plastig eyeglasses.
So you design and produce a heating body with a bar where it is possible to fix the hinge. So the bar needs to get hot about 90°C and this bar is at a handle witch we can press down slowly for insert the hinge in the frame. Now for good positions of the hinge in the frame you make us a easy fixing system for put the eyeglass on it to fix it and the hinge will be allways same position. This has to be very exactly so a good fixingsystem.
Only bit if you can design and deliver the hole system.