@IlmariKaronen Hmm you are right.

So theoretically they should have same weight.

I think a really good way to actually verify (in my case) would be to weigh them. And find out which is more closer to 16 grams.

@fixer1234 yeah that is a solution that I can actually pursue.

But I should accept this as answer as it answers what I asked.

Thanks. I don't think I am able to do this and I don't have those required tools. It will become even more expensive and not sure I could get the results (better professional finish) or not. Given I've never done things like this.

While the answers fit to what I asked, I guess they won't work for me. If I buy those equipment to make the board, it would be even more expensive for me. Further, I won't get good results (like better finish, even surface) even if I tried as it probably needs experience and better tools to do that. Anyway thanks.

Also I'm not sure we can ask about any question which is not related to art.

@AaarghZombies actually I will use them on actual motorcycle. On Amazon, they are not available. On Amazon UK, they are easily available but they are too expensive. So I'm making my own. And it needs to be white color only. In short, scratch proof is not necessary. Flexibility is also not necessary. Basically I need something waterproof and little thick so it doesn't bend/fold easily when motorcycle is in speed.