I am designing a heater and i want to hold the nichrome wire inside a frame, what can be used?
Go visit Cotronics web site. This is exactly what they do. They supply forms, epoxies, ceramics, etc., exactly for this kind of purpose. Write them about exactly what you want to achieve and they will help you select the right products to try.



You may want a form to wind your nichrome wire or ribbon around. Regardless of the form, there are high temperature ceramic and epoxy adhesives you can use for those or one of your own design. Both the forms and the epoxies and ceramic adhesives are similar to the materials you will find in those large, high wattage resistor blocks.

Examine the materials for thermal resistance. And some of these materials also have very high bulk electrical resistivity to avoid current leakage, but it doesn't sound as though you need that. (Almost all of them have pretty high resistance, regardless.)