I recently started a DSP&P 27' boxcar in On3. I'm using plans from an HOn3 version of the car. I currently have the ends cut, the sides, and the doors. I've also cut some internal supports for the car which will serve to stiffen the top of the car. I need to visit my LHS to get the necessary "lumber" to build the underframe. My question is, how scratch ought I to go? I intend to scratch some of the detail parts, but I can't decide what all to try. I think I'll use music or brass wire to produce the grab irons, but I haven't decided on the bolts that go with them. I also can't decide on the brake wheel, the air brakes (the South Park was fully air braked in 1884, the year of the car), or if I ought to do all of the door hardware. The vast majority of my previous work has been with styrene or hydrocal, but I've been accumulating brass working tools (ultimately for a couple steam locomotive projects...NKP K-1a and DSP&P 4-4-0). I suspect that 0.005 brass might work well for some of the detail parts. I do not have photo-etching tools. I plan on completing the main assemblies of the car (without the grab irons) and then making resin copies so I'll have a string of 27' boxcars. The sides in the picture are only straight and square on the 3 sides as a 6" scale (1/8") stringer will cover the top.