I thought that you already had the materials you needed...
I think the problem is that he had the slide "30 years ago...", doesn't have it anymore, and wants one now.
That's correct. I'm working on a new twist to an old trick and using a coin slide will help with a great finish!
Here's the funny thing though, I was looking around Ebay a found this:
I had to own it just for the childhood memories!!!
I also found a cheap modern version for $5 with a metal slide and bought it just for the slide.