I've been lamenting the fact that the K handlebars are set far foward for that hunched over riding experience. It's not a position I'm comfortable in. I'd researched bar backs for the K, I found three different sets, they ranged in price around $100. I don't have a hundred bucks right now.
However, I recently bought a 1976 Honda GL1000 Goldwing. It has a set of risers on it! I measured the centers and they look very close 32mm. With any luck I can transfer the risers from the GL to the K.
Prior to finding the risers on the wing I was contemplating making a set. I thought I'd cast them from JB Weld. I of course have some concerns. I know the stuff is tough, it's made to put on engines and rebuild threads. But, building an integral part that holds the bike on the road is another story.