I did a light primer coat to protect the Micro Mark rivet decals I put on and to find more printing flaws.

I tried using my "green" filling putty on some of the flaws but it was not sticking to the printed body. I will have to look into that for any future work.

I decided not to worry about some of the flaws, instead I will make it look well used when I am done.

I put a number of the grab irons on but still have more to go.

Also installed the lights I chose for the project.

Well the weekend is here and I hope to get my 85 tonner primed by the end of the weekend.

In the mean time I have made some side pantographs for it.

I have some general dimensions for the side pantograph and a maintenance manual picture to help out.

A bit of brass, some solder and this is what I came up with. I just about didn't finish as my solder iron quit near the end of the adventure.

Well since it was snowing all day I stayed in side, completed my changes to my 3D print file for the steeple cab and sent it to Shapeways for printing.

So I fixed the weak spots and added an end piece to the truck.

I use the 3D program Alibre Personal Edition for all of my drawings. Most of what was fixed you can't see.

I also am drafting this at 1:1 and then I scale to HO.

The ends are raised as that way the parts print as 4 parts not one.

We will see what it looks like when I send it to the printer in a couple of weeks.

I am designing the trucks so that they fit into the atlas drives without gluing.

My initial design is good, but it will require some strengthening.

Here is an underside shot with the frame ground down and the truck side frames in place

I will be adding a inside end piece for strength and to keep the side frames square.

My initial 3D print arrived and I have done the pre fitting over the Atlas HH600/660 frame.

I am happy with the body but have found a few design issues with my trucks.

I print using Shapeways.com and here you are able to see right into the model and I don't have any clearance issues with the drive. 

Here are a couple of shots of my original scratch built GE 85 ton steeple cab

Before details and the final frame.

Back a few years ago I started to scratch build a GE 85 ton steeple cab based on the two Hudson Bay Mining and Smelting had the 60 or more Utah copper owned. I finished it about a year ago as a non operational locomotive in a HO scale diorama.
Over the past year I have been designing HO cars in 3D and printing them though Shapeways.com.
The Atlas HH600/660 has a slightly larger bolster to bolster dimension than the actual 85 ton steeple cab but is a good platform for it.
After designing the cab and trucks I have started the locomotive with the plans of making two.