Roy Houston explained to me many years ago that all "purchased" magic (as in manufactured props) is nothing but a "starter kit". That is to say, you will have to modify them and adjust them so as to fit your specific needs and style.
I'll give you an "insider" example of this;
The Thurston Sawing in Half; in order to make the boxes a bit smaller areas were carved out into the upper portion of the box, by the girl's neck, so that her knees had a place to go... this allowed the cabinet to be a bit shorter and added to it's deceptive qualities. Few other Sawing cabinets of the era used this little ditty.
Here's another one... the table to the original Blackstone Buzz Saw was adjustable so as to tailor fit each girl that worked it.
I realize these are some rather "large" examples, but the point is that we must learn how to take what we purchase and use it as a basis only, augmenting and modifying the idea until we have something that is perfect for us, as individuals.
Far too few people involved in magic today have the tenacity required for attempting to make their own devices and methods and yet, they do have the audacity to think themselves "designers" and "conceptionalists" just so they can keep up with everyone else's credentials. For the few brave souls willing to take this route however, the pay off will prove remarkable, so hang in there. It may take time...even decades before you gain the respect and endorsements, but it will happen! I know this from personal experience and the end results have surprised even me. So hang in there, have faith in yourself and always strive to go beyond the "commercially acceptable".
