RE: CMP Hellcat
When it’s dry sand the sides flat leaving about 1/8” of material on them or maybe a little less. Then continue to round and smooth the edges with some 320 sandpaper. I use a small round file to open the wheel axle holes, then I use a Dremel with a drill bit to finish the hole. To seal the epoxy and MB I like to add a few layers of thin CA. After you apply a layer quickly wipe off the excess. After that give it a final sanding.
Now the last of the soldering! When we attach our retaining washer on the steering rod we need to allow for some clearance, if we don’t and you make the joint very tight then it will bind when pulling force is applied to the steering arm. I use 2 pieces of card stock as a clearance gauge.
Apply a clamp if needed and solder the control arm on, solder on the top and bottom of the arm. That’s it, you’re done with the construction of the tail wheel!