You are right about using original girders to cut down being a waste. It also would be very time consuming cutting and filing them down and still ending up with a big hole in them. Taking into account that each riser would need two of these caps, you would have to hand make 20 just to cover 10 risers. Certainly not worth the effort.
"Do a lot of people need these caps?" I would also say yes. I don't know how much it costs, time and preparation 3D printing is but depending on the cost I would be interested in dozens if they were in the light gray. I would be interested in knowing the cost and time for making one though. I would also be curious as to what they would do on Ebay. Lets say if they made a batch of ten caps how fast they would go.
This is what you end up with after cutting down a 3" riser...
"Do a lot of people need these caps?" I would also say yes. I don't know how much it costs, time and preparation 3D printing is but depending on the cost I would be interested in dozens if they were in the light gray. I would be interested in knowing the cost and time for making one though. I would also be curious as to what they would do on Ebay. Lets say if they made a batch of ten caps how fast they would go.
This is what you end up with after cutting down a 3" riser...