Pins and Circles

Interlocking bricks pins cut off the bricks.

It is a four stage process to cut the hole.

Poke a pilot hole with the awl.

Then three or four drill sizes to get to the full size hole. 

Then you have a pin with a hole in it.

I put them on this plastic coated wire rod so they don't escape.  Just slide them on and they are tight enough to stay in place.  These will end up as spacers keeping the tire away from the body of the truck and as hubs on the outside of the axle to help keep the axle on the model.

Underside of one of the trucks with the new fenders attached.