I have'nt used Tamiya tape, But I have been using 3M automotive masking tape for years now after having issues with other masking materials. I buy the 2" tape. I put a piece on my cutting mat and cut it to the width I need with a sharp #11 exacto blade and a metal straight edge....I also use it for cutting masking for flames etc. always with good results.
Very COOL Dale...! I have collected all the parts to do this project....Love that Hot Wheels design..! Just have'nt got it on the workbench yet .....Hope mine comes out as good as yours , you did an Awesome job !!!