What is the biggest radius it will make? Looks to be around 4".
It will turn up to a 3" radius
Interesting design for the slide, any particular reason for that style?
No particular reason. Was looking to make one and saw one like this on Ebay that sold for over $300.00. Thought the design was cool and would be a good project. There are many other designs that are much easier and just as functional, but this one just caught my fancy.