Should I copy-write a new product?

A copyright applies to intellectual material, not products.

You will want to look into getting a trademark for your item.

It may be hard or impossible unless you can show that your frame is significantly different than other frames on the market.

Be prepared to invest $1,000. (USD) in the trademark work. And remember that just because you spend the money to get the trademark does not mean that the office of trademarks will actually approve it in the end.

You probably ought to just make them, sell them and get on with making money.

You don't need to copyright anything. By law, any creation of yours is automatically copy-written. The challenge is proving you created it first. The professional act of copy-writing simply helps document it.

As Randy said, in today's world, in America, your work is copyrighted the moment it is finished, automatically. You CAN file a formal copyright, still. Be aware that all it does is give you the right to sue. There are no copyright police out there on your behalf. If you are not prepared to sue people then don't bother filing.

In the USA there is such a thing as a "design patent" that allows you to protect the ornamental appearance of something, rather than its function. Copyright would (in theory) cover the "creative work of original expression" in the form of a sculpture or the like. Copyright is free and automatic.

You would need to prove it is completely different from every product out there already, which is extremely difficult.

if you want to protect it you need a patent on it