Not many people know this, but until The Door Knob throw was created, people used to open doors by breaking them open with their shoulders or feet and then replace it with a spare door from a bulk spare door replacement kit from Sears. It was pretty expensive, what with all the spare door kits that need to be bought as well as all the medical attention.
Friends would prank their friends by using prank steel doors.
Thankfully The Door Knob throw was invented, allowing people to just buy one, really nice yet expensive door that could be reused multiple times over. Unfortunately, friends had to get more creative with their pranks since nobody breaks down doors anymore.
It wasn’t the first yoyo with replaceable response. Turbo discs came out with the introduction of the pocket pocket in fall 99. Prior to that the turbo bumblebee and coldfusions had been released as well as the super yo samurai.
Man for some reason I thought TD were introd w the SB-2 because of its gap tool but I know you’re right. And that timing makes sense because of the huge dustup between Custom and Playmaxx around then. My bad!
This is how my list looks since i started throwing in the mid 90’s. i’m sure there are some others i should have mentioned.
butterfly
tk no jive
tk sb2
yomega raider
superyo renegage
duncan fh1
yoyojam patriot (also journey or whatever model introduced the double oring response as a predecessor of silicone/pads)
dif-e-yo barebones
yoyofactory 888
The Butterfly was the first butterfly shaped yoyo (“Butterfly” and “Imperial” are still registered trademarks of Duncan afaik) to be mass produced but I think the concept existed in the late 1800s.